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序號 學年期 教師動態
31 92/2 國企系 許佳惠 助理教授 期刊論文 發佈 我國半導體產業全球競爭策略探討與案例分析 , [92-2] :我國半導體產業全球競爭策略探討與案例分析期刊論文我國半導體產業全球競爭策略探討與案例分析洪祚隆; 許佳惠; 簡慈; 張瓏耀; 曾義明核心能力;供應鏈;全球運籌管理;半導體 DRAM臺灣經濟金融月刊 40(2), p.97-116zh_TW1684-6508國內是TWN
32 106/1 國企系 謝志柔 副教授 期刊論文 發佈 公司治理與經營績效:以顧客知曉為干擾變數 , [106-1] :公司治理與經營績效:以顧客知曉為干擾變數期刊論文公司治理與經營績效:以顧客知曉為干擾變數Corporate Governance and Operating Performance: The Moderating Variable of Customer Awareness張幸惠; 謝志柔公司治理;顧客知曉;異常報酬;Corporate Governance;Customer Awareness;Abnormal Returns商略學報 9(3), p.187-206本研究使用臺灣公司治理100指數,探討公司治理與經營績效之關聯性,並檢驗公司治理指數100宣告時,成分股是否有正的異常報酬。研究樣本包括774家上市公司,研究期間為2012年至2014年。迴歸分析結果發現,公司治理與經營績效關係並不顯著;然而,顧客知曉對公司治理與經營績效關係具有顯著的正向干擾效果,隱含高顧客知曉成分股顯著地正向影響經營績效。事件研究結果顯示,當公司治理100指數宣告時,宣告前有顯著地正的異常報酬,特別是高顧客知曉成分股。 This study uses Taiwan Corporate Governance 100 Index to investigate the relationship between corporate governance and operating performance. In addition, this study examines if the announcement of corporate governance 100 (CG100) firms shows positive abnormal returns for the selected CG 100 firms. The sample consists of 774 listed firms, spanning the period from 2012 to 2014. Ordinary least squares regression results show that the link between corporate governance and operating performance is insignificant. However, customer awareness
33 103/1 國企系 謝志柔 副教授 期刊論文 發佈 全球創投產業發展趨勢:台灣創投業者何去何從? , [103-1] :全球創投產業發展趨勢:台灣創投業者何去何從?期刊論文全球創投產業發展趨勢:台灣創投業者何去何從?Development Trends in the Global Venture Capital Industry: What Should Taiwanese Venture Capitalists Do?謝志柔人力資源管理措施;服務創新;服務行業;HRM practices;service innovation;service industry創新與管理 11(2), p.25-65本文綜述全球創投產業發展趨勢,且特別論及台灣創投業的狀況。除了彙整多元性的論據、數據及具體事證以抽繹出重要概念貫穿全文外,本文也使用文獻檢討方法,並聚焦於晚近的學術研究成果,更進而在此方法論的層面上提出具洞察力的見解及建言,俾供產官學各界參酌。作者發現各國創投業者從沒有像現在這樣認真地用國際化的視野來看待跨國投資佈局。絕大多數業者視透過與「奠定業界地位」的當地伙伴成立「跨國策略聯盟」為實現擴張地理區域的重要方式。此外,許多政府開始砸重金,旨在協助孵育新創公司及刻意建構出活躍的創投生態環境,以提昇國際競爭力。同時令人振奮的是,可望展開成長新頁的新興產業領域包括清淨科技、奈米科技、醫療器材和醫療服務。對台灣創投業者而言,能否獲得充裕的資金以持續金援新創公司是業者在國際舞台上維持競爭優勢的關鍵。因「國際化」乃一國經濟突破國界和地區上的藩籬向全球擴展至每個角落的過程,伴隨而來的「緊密合作」、「構想交流與激盪」及「企業跨境貿易」,促使台灣創投專業人士不得不擁抱多元化及汲取新知識和專門技術,以利跨越職能部門界限並積極合作。廣闊的國際視野固然重要;但同樣重要的是社會與文化制度是否鼓勵創投業者提升外語能力,並展現跨國職場移動力高的特質。雖然創投有各種不同的退場機制,文獻顯示最吸引創投的選項為通過「公開上市」退出。因此證券市場必須透明、流動性高且籌募資金機能強,以契合前途光明的企業的需求。因為創投公司對「創新創意」的發揮、「企業家精神」的孕育、「就業機會」的創造及「經濟成長」具有催化的力量,台灣政府的產業發展規劃中之各種施政措施也應包含消除創投執業中各種法律與規管上所带来的制度性發展障礙。再者,政府還應制定新措施鼓勵與支持「創意革新」和「企業家精神」。最後,身處「新經濟」時代的今天,唯有結合「科技創新」與「
34 107/1 建築系 鄭晃二 副教授 期刊論文 發佈 Development of New Technology using Bamboo to Construct a Spiritual Place in the Gambia (Senegambia Region) , [107-1] :Development of New Technology using Bamboo to Construct a Spiritual Place in the Gambia (Senegambia Region)期刊論文Development of New Technology using Bamboo to Construct a Spiritual Place in the Gambia (Senegambia Region)Alhagie T Sarr; Hoang-Ell JengAffordable Bamboo;Climate Change;SustainabilityInternational Journal of Advances in Mechanical and Civil Engineering (IJAMCE) 5(3), p.82-84This paper evaluates the current conditions of Gambia and Senegambia Region low-income tropical housing with a focus on construction methods and materials in order to identify the key areas for improvement. Surveys are carried out to collect relevant information on prevailing construction methods/materials and on their environmental impacts in rural areas. Low quality, high waste, and energy intensive production methods, as well as excessive soil extraction and deforestation, are identified as the main environmental damage of the current construction methods and materials. The embodied energy is highlighte
35 103/2 統計系 陳淑嬌 助理教授 期刊論文 發佈 老人居住產業發展對區域經濟影響評估方式探討以新北市為例 , [103-2] :老人居住產業發展對區域經濟影響評估方式探討以新北市為例期刊論文老人居住產業發展對區域經濟影響評估方式探討以新北市為例陳淑嬌臺灣經濟研究月刊 38(5), p.122-128zh_TW國內否TWN
36 108/1 會計系 韓幸紋 副教授 期刊論文 發佈 從人口老化及薪資停滯角度探討全民健保財務及保費負擔世代分配問題 , [108-1] :從人口老化及薪資停滯角度探討全民健保財務及保費負擔世代分配問題期刊論文從人口老化及薪資停滯角度探討全民健保財務及保費負擔世代分配問題梁景洋; 韓幸紋臺灣經濟預測與政策zh_TW國內TSSCI;國內;是TWN
37 103/2 統計系 陳淑嬌 助理教授 期刊論文 發佈 應用整合性科技接受模式探討醫院呼吸治療照護管理導入無線射頻辨識技術之成效 , [103-2] :應用整合性科技接受模式探討醫院呼吸治療照護管理導入無線射頻辨識技術之成效期刊論文應用整合性科技接受模式探討醫院呼吸治療照護管理導入無線射頻辨識技術之成效鄭雅穗; 盧以詮; 沈聖倫; 陳大勝; 陳淑嬌福祉科技與服務管理學刊 Vol.3,No.3 pp329 - 330無線射頻辨識(Radio Frequency Identification, RFID)技術近年來普遍被醫療相關產業使用,國內多家醫院已使用RFID識別技術藉以提昇醫院病患的醫療安全、增進醫療業務的作業效率及改善醫療服務水準。加護病房內呼吸衰竭重症病患使用的呼吸器,皆由呼吸治療師負責呼吸器管理與照護,以維持病患的生命需求,對於呼吸治療師而言,登錄錯誤就會發生整個醫療照護團隊對於病患臨床呼吸生理與疾病狀況評估產生錯誤,進而造成醫療延誤,因而危害病患的疾病療程;但部分醫院內的呼吸治療臨床照護作業至今仍是手寫資料登錄與人工病患辨識,人為辨識容易錯誤且登錄資料費時易造成作業效率低落。RFID在呼吸治療中被用於提升資料辨識的效率與正確性,且呼吸器為醫院的貴重儀器,透過RFID則可以有效的管理呼吸治療儀器設備,了解其設備之採購時間、使用率和維修狀況,以做為儀器設備效益分析之工具。有鑑於此,本研究以台灣某醫學中心呼吸治療師為研究對象,探討呼吸治療照護導入RFID技術效益之研究,以提升呼吸照護品質、醫療錯誤降低、縮短作業時間、作業效率增加、呼吸照護資訊交換及呼吸器追蹤管理。zh_TW2306-1790國內TSSCI;否TWN
38 107/1 統計系 吳碩傑 教授 期刊論文 發佈 Bayesian analysis for lognormal distribution under progressive type-II censoring , [107-1] :Bayesian analysis for lognormal distribution under progressive type-II censoring期刊論文Bayesian analysis for lognormal distribution under progressive type-II censoringSukhdev Singh; Yogesh Mani Tripathi; Shuo-Jye WuHacettepe Journal of Mathematics and Statistics, 48(5), 1488-1504In this paper, we consider the problems of Bayesian estimation and prediction for lognormal distribution under progressive Type-II censored data. We propose various non-informative and informative priors for the unknown lognormal parameters and compute the Bayes estimates under squared error loss function. Importance sampling technique and OpenBUGS are taken into consideration for the computational purpose. Further, we predict lifetimes of both censored and future samples under one- and two-sample prediction frameworks. We also compute the corresponding Bayes predictive bounds. A simulation study is conducted to compare the performance of proposed estimates and a real data set is analyzed to illustrate application
39 107/2 資管系 鄭啟斌 教授 期刊論文 發佈 Solving multi-mode resource-constrained multi-project scheduling problem with combinatorial auction mechanisms , [107-2] :Solving multi-mode resource-constrained multi-project scheduling problem with combinatorial auction mechanisms期刊論文Solving multi-mode resource-constrained multi-project scheduling problem with combinatorial auction mechanismsChi-Bin Cheng; Chiao-Yu Lo; Chih-Ping ChuMulti-project scheduling;resource dedication;bi-level decentralized programming;combinatorial optimization;fuzzy logicInternational Journal of Information and Management Sciences, 30(2), 143-167.This study solves a multi-project, multi-mode, and resource-constrained project scheduling problem. Multi-mode means that the activities in a project can be accomplished in one out of several execution modes, each of which represents an alternative combination of resource requirement of the activity. The present study considers the case that the resources need to be allocated first to individual projects by the upper-level manager, and then the project manager of each project schedules the project to optimize its outcome. In view of s
40 100/1 物理系 李啟正 助理教授 期刊論文 發佈 One-Fe versus Two-Fe Brillouin Zone of Fe-Based Superconductors: Creation of the Electron Pockets via Translational Symmetry Breaking , [100-1] :One-Fe versus Two-Fe Brillouin Zone of Fe-Based Superconductors: Creation of the Electron Pockets via Translational Symmetry Breaking期刊論文One-Fe versus Two-Fe Brillouin Zone of Fe-Based Superconductors: Creation of the Electron Pockets via Translational Symmetry BreakingChia-Hui Lin; Tom Berlijn; Limin Wang; Chi-Cheng Lee; Wei-Guo Yin; Wei KuPhys. Rev. Lett. 107, 257001We investigate the physical effects of translational symmetry breaking in Fe-based high-temperature superconductors due to alternating anion positions. In the representative parent compounds, including the newly discovered Fe-vacancy-ordered K 0.8 Fe 1.6 Se 2, an unusual change of orbital character is found across the one-Fe Brillouin zone upon unfolding the first-principles band structure and Fermi surfaces, suggesting that covering a larger one-Fe Brillouin zone is necessary in experiments. Most significantly, the electron pockets (critical to the magnetism and superconductivity) are found only created with broken sym
41 100/2 物理系 李啟正 助理教授 期刊論文 發佈 Magnetic softness in iron-based superconductors , [100-2] :Magnetic softness in iron-based superconductors期刊論文Magnetic softness in iron-based superconductorsWei-Guo Yin; Chi-Cheng Lee; Wei KuSupercond. Sci. Technol. 25, 084007We examine the relevance of several major material-dependent parameters to the magnetic softness in iron-based superconductors by means of first-principles electronic structure analysis of their parent compounds. The results are explained in the spin-fermion model where localized spins and orbitally degenerate itinerant electrons coexist and are coupled by Hund's rule coupling. We found that the difference in strength of the Hund's rule coupling term is the major material-dependent microscopic parameter for determining the ground-state spin pattern. The magnetic softness in iron-based superconductors is essentially driven by the competition between the double-exchange ferromagnetism and the superexchange antiferromagnetism.en國外SCI;是GBR
42 101/2 物理系 李啟正 助理教授 期刊論文 發佈 Spin-split conduction band in EuB6 and tuning of half-metallicity with external stimuli , [101-2] :Spin-split conduction band in EuB6 and tuning of half-metallicity with external stimuli期刊論文Spin-split conduction band in EuB6 and tuning of half-metallicity with external stimuliJungho Kim; Wei Ku; Chi-Cheng Lee; D. S. Ellis; B. K. Cho; A. H. Said; Y. Shvyd’ko; Young-June KimPhys. Rev. B 87, 155104We report an Eu L3-edge resonant inelastic x-ray scattering (RIXS) investigation of the electronic structure of EuB6. We observe that the RIXS spectral weight around 1.1 eV increases dramatically when the system is cooled below the ferromagnetic ordering temperature and follows the magnetic order parameter. This spectral feature is attributed to the intersite excitation from the local 4f orbital to the spin-split 5d orbital on the neighboring site, illustrating the essential role of exchange splitting of the conducting electrons. Based on our density functional theory calculations and the RIXS data, EuB6 at low temperature can be consistently described with a semimetallic electronic structure
43 102/1 物理系 李啟正 助理教授 期刊論文 發佈 Microscopic origin of the π states in epitaxial silicene , [102-1] :Microscopic origin of the π states in epitaxial silicene期刊論文Microscopic origin of the π states in epitaxial siliceneA. Fleurence; Y. Yoshida; C.-C. Lee; T. Ozaki; Y. Yamada-Takamura; Y. HasegawaAppl. Phys. Lett. 104, 021605We investigated the electronic properties of epitaxial silicene on ZrB2(0001) thin film grown on Si(111) by means of low-temperature scanning tunneling spectroscopy and density functional theory calculations. The position of silicon atoms and thus, the localization of the valence and conduction states were deducted from the comparison of the spectra and the computed local density of states. We point out the strong contribution of pz orbitals of specific atoms to those states which indicates the π character of the conduction and valence bands. A clear correlation between hybridization of the orbitals of the Si atoms and the buckling was evidenced.en_US國外SCI;是USA
44 103/1 物理系 李啟正 助理教授 期刊論文 發佈 Diverse forms of bonding in two-dimensional Si allotropes: Nematic orbitals in the MoS2 structure , [103-1] :Diverse forms of bonding in two-dimensional Si allotropes: Nematic orbitals in the MoS2 structure期刊論文Diverse forms of bonding in two-dimensional Si allotropes: Nematic orbitals in the MoS2 structureFlorian Gimbert; Chi-Cheng Lee; Rainer Friedlein; Antoine Fleurence; Yukiko Yamada-Takamura; Taisuke OzakiPhys. Rev. B 90, 165423The interplay of sp2- and sp3-type bonding defines silicon allotropes in two- and three-dimensional forms. A two-dimensional phase bearing structural resemblance to a single MoS2 layer is found to possess a lower total energy than low-buckled silicene and to be stable in terms of its phonon dispersion relations. A set of cigar-shaped nematic orbitals originating from the Si sp2 orbitals realizes bonding with a sixfold coordination of the inner Si atoms of the layer. The identification of these nematic orbitals advocates diverse Si bonding configurations different from those of C atoms.en_US國外SCI;是USA
45 104/1 物理系 李啟正 助理教授 期刊論文 發佈 Discovery of a Weyl fermion state with Fermi arcs in niobium arsenide , [104-1] :Discovery of a Weyl fermion state with Fermi arcs in niobium arsenide期刊論文Discovery of a Weyl fermion state with Fermi arcs in niobium arsenideSu-Yang Xu; Nasser Alidoust; Ilya Belopolski; Zhujun Yuan; Guang Bian; Tay-Rong Chang; Hao Zheng; Vladimir N. Strocov; Daniel S. Sanchez; Guoqing Chang; Chenglong Zhang; Daixiang Mou; Yun Wu; Lunan Huang; Chi-Cheng Lee; Shin-Ming Huang; BaoKai Wang; Arun Bansil; Horng-Tay Jeng; Titus Neupert; Adam Kaminski; Hsin Lin; Shuang Jia; M. Zahid HasanNature Physics 11, 748Three types of fermions play a fundamental role in our understanding of nature: Dirac, Majorana and Weyl. Whereas Dirac fermions have been known for decades, the latter two have not been observed as any fundamental particle in high-energy physics, and have emerged as a much-sought-out treasure in condensed matter physics. A Weyl semimetal is a novel crystal whose low-energy electronic excitations behave as Weyl fermions. It has received worldwide interest and is believed to open the nex
46 104/1 物理系 李啟正 助理教授 期刊論文 發佈 Experimental discovery of a topological Weyl semimetal state in TaP , [104-1] :Experimental discovery of a topological Weyl semimetal state in TaP期刊論文Experimental discovery of a topological Weyl semimetal state in TaPSu-Yang Xu; Ilya Belopolski; Daniel S. Sanchez; Chenglong Zhang; Guoqing Chang; Cheng Guo; Guang Bian; Zhujun Yuan; Hong Lu; Tay-Rong Chang; Pavel P. Shibayev; Mykhailo L. Prokopovych; Nasser Alidoust; Hao Zheng; Chi-Cheng Lee; Shin-Ming Huang; Raman Sankar; Fangcheng Chou; Chuang-Han Hsu; Horng-Tay Jeng; Arun Bansil; Titus Neupert; Vladimir N. Strocov; Hsin Lin; Shuang Jia; M. Zahid HasanScience Advances 1, e1501092Weyl semimetals are expected to open up new horizons in physics and materials science because they provide the first realization of Weyl fermions and exhibit protected Fermi arc surface states. However, they had been found to be extremely rare in nature. Recently, a family of compounds, consisting of tantalum arsenide, tantalum phosphide (TaP), niobium arsenide, and niobium phosphide, was predicted as a Weyl semimetal candidates. We exper
47 104/1 物理系 李啟正 助理教授 期刊論文 發佈 Atomic-Scale Visualization of Quantum Interference on a Weyl Semimetal Surface by Scanning Tunneling Microscopy , [104-1] :Atomic-Scale Visualization of Quantum Interference on a Weyl Semimetal Surface by Scanning Tunneling Microscopy期刊論文Atomic-Scale Visualization of Quantum Interference on a Weyl Semimetal Surface by Scanning Tunneling MicroscopyHao Zheng; Su-Yang Xu; Guang Bian; Cheng Guo; Guoqing Chang; Daniel S. Sanchez; Ilya Belopolski; Chi-Cheng Lee; Shin-Ming Huang; Xiao Zhang; Raman Sankar; Nasser Alidoust; Tay-Rong Chang; Fan Wu; Titus Neupert; Fangcheng Chou; Horng-Tay Jeng; Nan Yao; Arun Bansil; Shuang Jia, Hsin Lin; M. Zahid HasanWeyl semimetal;topological matter;scanning tunneling microscopyACS Nano 10, 1378Weyl semimetals may open a new era in condensed matter physics, materials science, and nanotechnology after graphene and topological insulators. We report the first atomic scale view of the surface states of a Weyl semimetal (NbP) using scanning tunneling microscopy/spectroscopy. We observe coherent quantum interference patterns that arise from the scattering of quasiparticles near point de
48 104/1 物理系 李啟正 助理教授 期刊論文 發佈 Two-dimensional Topological Crystalline Insulator Phase in Sb/Bi Planar Honeycomb with Tunable Dirac Gap , [104-1] :Two-dimensional Topological Crystalline Insulator Phase in Sb/Bi Planar Honeycomb with Tunable Dirac Gap期刊論文Two-dimensional Topological Crystalline Insulator Phase in Sb/Bi Planar Honeycomb with Tunable Dirac GapChia-Hsiu Hsu; Zhi-Quan Huang; Christian P. Crisostomo; Liang-Zi Yao; Feng-Chuan Chuang; Yu-Tzu Liu; Baokai Wang; Chuang-Han Hsu; Chi-Cheng Lee; Hsin Lin; Arun BansilScientific Reports 6, 18993We predict planar Sb/Bi honeycomb to harbor a two-dimensional (2D) topological crystalline insulator (TCI) phase based on first-principles computations. Although buckled Sb and Bi honeycombs support 2D topological insulator (TI) phases, their structure becomes planar under tensile strain. The planar Sb/Bi honeycomb structure restores the mirror symmetry, and is shown to exhibit non-zero mirror Chern numbers, indicating that the system can host topologically protected edge states. Our computations show that the electronic spectrum of a planar Sb/Bi nanoribbon with armchair or zigzag edges
49 104/2 物理系 李啟正 助理教授 期刊論文 發佈 Topological nodal-line fermions in spin-orbit metal PbTaSe2 , [104-2] :Topological nodal-line fermions in spin-orbit metal PbTaSe2期刊論文Topological nodal-line fermions in spin-orbit metal PbTaSe2Guang Bian; Tay-Rong Chang; Raman Sankar; Su-Yang Xu; Hao Zheng; Titus Neupert; Ching-Kai Chiu; Shin-Ming Huang; Guoqing Chang; Ilya Belopolski; Daniel S. Sanchez; Madhab Neupane; Nasser Alidoust; Chang Liu; BaoKai Wang; Chi-Cheng Lee; Horng-Tay Jeng; Chenglong Zhang; Zhujun Yuan; Shuang Jia; Arun Bansil; Fangcheng Chou; Hsin Lin; M. Zahid HasanNature Communications 7, 10556Topological semimetals can support one-dimensional Fermi lines or zero-dimensional Weyl points in momentum space, where the valence and conduction bands touch. While the degeneracy points in Weyl semimetals are robust against any perturbation that preserves translational symmetry, nodal lines require protection by additional crystalline symmetries such as mirror reflection. Here we report, based on a systematic theoretical study and a detailed experimental characterization, the existence of topol
50 104/1 物理系 李啟正 助理教授 期刊論文 發佈 New type of Weyl semimetal with quadratic double Weyl fermions , [104-1] :New type of Weyl semimetal with quadratic double Weyl fermions期刊論文New type of Weyl semimetal with quadratic double Weyl fermionsShin-Ming Huang; Su-Yang Xu; Ilya Belopolski; Chi-Cheng Lee; Guoqing Changa; Tay-Rong Chang; BaoKai Wang; Nasser Alidoust; Guang Bian; Madhab Neupane; Daniel Sanchez; Hao Zheng; Horng-Tay Jeng; Arun Bansil; Titus Neupert; Hsin Lin; M. Zahid Hasantopological insulator;Weyl fermion;Fermi arc;chiral magnetic effectPNAS 113, 1180Weyl semimetals have attracted worldwide attention due to their wide range of exotic properties predicted in theories. The experimental realization had remained elusive for a long time despite much effort. Very recently, the first Weyl semimetal has been discovered in an inversion-breaking, stoichiometric solid TaAs. So far, the TaAs class remains the only Weyl semimetal available in real materials. To facilitate the transition of Weyl semimetals from the realm of purely theoretical interest to the realm of experimental studies and device
51 104/2 物理系 李啟正 助理教授 期刊論文 發佈 Signatures of Fermi Arcs in the Quasiparticle Interferences of the Weyl Semimetals TaAs and NbP , [104-2] :Signatures of Fermi Arcs in the Quasiparticle Interferences of the Weyl Semimetals TaAs and NbP期刊論文Signatures of Fermi Arcs in the Quasiparticle Interferences of the Weyl Semimetals TaAs and NbPGuoqing Chang; Su-Yang Xu; Hao Zheng; Chi-Cheng Lee; Shin-Ming Huang; Ilya Belopolski; Daniel S. Sanchez; Guang Bian; Nasser Alidoust; Tay-Rong Chang; Chuang-Han Hsu; Horng-Tay Jeng; Arun Bansil; Hsin Lin; M. Zahid HasanPhys. Rev. Lett. 116, 066601The recent discovery of the first Weyl semimetal in TaAs provides the first observation of a Weyl fermion in nature. Such a topological semimetal features a novel type of anomalous surface state, the Fermi arc, which connects a pair of Weyl nodes through the boundary of the crystal. Here, we present theoretical calculations of the quasiparticle interference (QPI) patterns that arise from the surface states including the topological Fermi arcs in the Weyl semimetals TaAs and NbP. Most importantly, we discover that the QPI exhibits termination points tha
52 104/2 物理系 李啟正 助理教授 期刊論文 發佈 Criteria for Directly Detecting Topological Fermi Arcs in Weyl Semimetals , [104-2] :Criteria for Directly Detecting Topological Fermi Arcs in Weyl Semimetals期刊論文Criteria for Directly Detecting Topological Fermi Arcs in Weyl SemimetalsIlya Belopolski; Su-Yang Xu; Daniel S. Sanchez; Guoqing Chang; Cheng Guo; Madhab Neupane; Hao Zheng; Chi-Cheng Lee; Shin-Ming Huang; Guang Bian; Nasser Alidoust; Tay-Rong Chang; BaoKai Wang; Xiao Zhang; Arun Bansil; Horng-Tay Jeng; Hsin Lin; Shuang Jia; M. Zahid HasanPhys. Rev. Lett. 116, 066802The recent discovery of the first Weyl semimetal in TaAs provides the first observation of a Weyl fermion in nature and demonstrates a novel type of anomalous surface state, the Fermi arc. Like topological insulators, the bulk topological invariants of a Weyl semimetal are uniquely fixed by the surface states of a bulk sample. Here we present a set of distinct conditions, accessible by angle-resolved photoemission spectroscopy (ARPES), each of which demonstrates topological Fermi arcs in a surface state band structure, with minimal reliance on calc
53 104/2 物理系 李啟正 助理教授 期刊論文 發佈 Prediction of an arc-tunable Weyl Fermion metallic state in MoxW1-xTe2 , [104-2] :Prediction of an arc-tunable Weyl Fermion metallic state in MoxW1-xTe2期刊論文Prediction of an arc-tunable Weyl Fermion metallic state in MoxW1-xTe2Tay-Rong Chang; Su-Yang Xu; Guoqing Chang; Chi-Cheng Lee; Shin-Ming Huang; BaoKai Wang; Guang Bian; Hao Zheng; Daniel S. Sanchez; Ilya Belopolski; Nasser Alidoust; Madhab Neupane; Arun Bansil; Horng-Tay Jeng; Hsin Lin; M. Zahid HasanNature Communications 7, 10639A Weyl semimetal is a new state of matter that hosts Weyl fermions as emergent quasiparticles. The Weyl fermions correspond to isolated points of bulk band degeneracy, Weyl nodes, which are connected only through the crystal’s boundary by exotic Fermi arcs. The length of the Fermi arc gives a measure of the topological strength, because the only way to destroy the Weyl nodes is to annihilate them in pairs in the reciprocal space. To date, Weyl semimetals are only realized in the TaAs class. Here, we propose a tunable Weyl state in MoxW1−xTe2 where Weyl nodes are formed by touching point
54 104/2 物理系 李啟正 助理教授 期刊論文 發佈 Signatures of the Adler-Bell-Jackiw chiral anomaly in a Weyl fermion semimetal , [104-2] :Signatures of the Adler-Bell-Jackiw chiral anomaly in a Weyl fermion semimetal期刊論文Signatures of the Adler-Bell-Jackiw chiral anomaly in a Weyl fermion semimetalCheng-Long Zhang; Su-Yang Xu; Ilya Belopolski; Zhujun Yuan; Ziquan Lin; Bingbing Tong; Guang Bian; Nasser Alidoust; Chi-Cheng Lee; Shin-Ming Huang; Tay-Rong Chang; Guoqing Chang; Chuang-Han Hsu; Horng-Tay Jeng; Madhab Neupane; Daniel S. Sanchez; Hao Zheng; Junfeng Wang; Hsin Lin; Chi Zhang; Hai-Zhou Lu; Shun-Qing Shen; Titus Neupert; M. Zahid Hasan; Shuang JiaNature Communications 7, 10735Weyl semimetals provide the realization of Weyl fermions in solid-state physics. Among all the physical phenomena that are enabled by Weyl semimetals, the chiral anomaly is the most unusual one. Here, we report signatures of the chiral anomaly in the magneto-transport measurements on the first Weyl semimetal TaAs. We show negative magnetoresistance under parallel electric and magnetic fields, that is, unlike most metals whose resistivity increa
55 104/2 物理系 李啟正 助理教授 期刊論文 發佈 Spin Polarization and Texture of the Fermi Arcs in the Weyl Fermion Semimetal TaAs , [104-2] :Spin Polarization and Texture of the Fermi Arcs in the Weyl Fermion Semimetal TaAs期刊論文Spin Polarization and Texture of the Fermi Arcs in the Weyl Fermion Semimetal TaAsSu-Yang Xu; Ilya Belopolski; Daniel S. Sanchez; Madhab Neupane; Guoqing Chang; Koichiro Yaji; Zhujun Yuan; Chenglong Zhang; Kenta Kuroda; Guang Bian; Cheng Guo; Hong Lu; Tay-Rong Chang; Nasser Alidoust; Hao Zheng; Chi-Cheng Lee; Shin-Ming Huang; Chuang-Han Hsu; Horng-Tay Jeng; Arun Bansil; Titus Neupert; Fumio Komori; Takeshi Kondo; Shik Shin; Hsin Lin; Shuang Jia; M. Zahid HasanFermi surface;Spin polarization;Weyl fermionsPhys. Rev. Lett. 116, 096801A Weyl semimetal is a new state of matter that hosts Weyl fermions as quasiparticle excitations. The Weyl fermions at zero energy correspond to points of bulk-band degeneracy, called Weyl nodes, which are separated in momentum space and are connected only through the crystal’s boundary by an exotic Fermi arc surface state. We experimentally measure the spin polarization of t
56 104/2 物理系 李啟正 助理教授 期刊論文 發佈 A strongly robust type II Weyl fermion semimetal state in Ta3S2 , [104-2] :A strongly robust type II Weyl fermion semimetal state in Ta3S2期刊論文A strongly robust type II Weyl fermion semimetal state in Ta3S2Guoqing Chang; Su-Yang Xu; Daniel S. Sanchez; Shin-Ming Huang; Chi-Cheng Lee; Tay-Rong Chang; Guang Bian; Hao Zheng; Ilya Belopolski; Nasser Alidoust; Horng-Tay Jeng; Arun Bansil; Hsin Lin; M. Zahid HasanWeyl fermion;Fermi arc;TopologyScience Advances 2(6), e1600295Weyl semimetals are of great interest because they provide the first realization of the Weyl fermion, exhibit exotic quantum anomalies, and host Fermi arc surface states. The separation between Weyl nodes of opposite chirality gives a measure of the robustness of the Weyl semimetal state. To exploit the novel phenomena that arise from Weyl fermions in applications, it is crucially important to find robust separated Weyl nodes. We propose a methodology to design robust Weyl semimetals with well-separated Weyl nodes. Using this methodology as a guideline, we search among the material parameter space
57 105/1 物理系 李啟正 助理教授 期刊論文 發佈 Fermi arc electronic structure and Chern numbers in the type-II Weyl semimetal candidate MoxW1-xTe2 , [105-1] :Fermi arc electronic structure and Chern numbers in the type-II Weyl semimetal candidate MoxW1-xTe2期刊論文Fermi arc electronic structure and Chern numbers in the type-II Weyl semimetal candidate MoxW1-xTe2Ilya Belopolski, Su-Yang Xu, Yukiaki Ishida, Xingchen Pan, Peng Yu, Daniel S. Sanchez, Hao Zheng, Madhab Neupane, Nasser Alidoust, Guoqing Chang, Tay-Rong Chang, Yun Wu, Guang Bian, Shin-Ming Huang, Chi-Cheng Lee, Daixiang Mou, Lunan Huang, You Song, Baigeng Wang, Guanghou Wang, Yao-Wen Yeh, Nan Yao, Julien E. Rault, Patrick Le Fèvre, François Bertran, Horng-Tay Jeng, Takeshi Kondo, Adam Kaminski, Hsin Lin, Zheng Liu, Fengqi Song, Shik Shin, and M. Zahid HasanPhys. Rev. B 94(8), p.085127It has recently been proposed that electronic band structures in crystals can give rise to a previously overlooked type of Weyl fermion, which violates Lorentz invariance and, consequently, is forbidden in particle physics. It was further predicted that MoxW1−xTe2 may realize such a type-II Weyl fermion.
58 105/1 物理系 李啟正 助理教授 期刊論文 發佈 Discovery of a new type of topological Weyl fermion semimetal state in MoxW1-xTe2 , [105-1] :Discovery of a new type of topological Weyl fermion semimetal state in MoxW1-xTe2期刊論文Discovery of a new type of topological Weyl fermion semimetal state in MoxW1-xTe2Ilya Belopolski; Daniel S. Sanchez; Yukiaki Ishida; Xingchen Pan; Peng Yu; Su-Yang Xu; Guoqing Chang; Tay-Rong Chang; Hao Zheng; Nasser Alidoust; Guang Bian; Madhab Neupane; Shin-Ming Huang; Chi-Cheng Lee; You Song; Haijun Bu; Guanghou Wang; Shisheng Li; Goki Eda; Horng-Tay Jeng; Takeshi Kondo; Hsin Lin; Zheng Liu; Fengqi Song; Shik Shin;M. Zahid HasanElectronic properties and materials;Topological matterNature Communications 7, 13643The recent discovery of a Weyl semimetal in TaAs offers the first Weyl fermion observed in nature and dramatically broadens the classification of topological phases. However, in TaAs it has proven challenging to study the rich transport phenomena arising from emergent Weyl fermions. The series MoxW1−xTe2 are inversion-breaking, layered, tunable semimetals already under study as a promising pla
59 108/1 戰略所 李大中 副教授 期刊論文 發佈 川普的印太戰略與美中戰略競爭 , [108-1] :川普的印太戰略與美中戰略競爭期刊論文川普的印太戰略與美中戰略競爭李大中印太戰略;川普;美中關係;戰略競爭者軍事社會科學專刊 15, p.3-14自 2017 年 10 月以來,美國川普政府所推出的印太倡議,反映出美國對於印太區域的關注,此一戰略的最終目標,在於抑制中國大陸的崛起與確保美國的領導地位。而自 2018 年年中迄今,美中關係的急遽惡化,不僅展現在貿易衝突,更涉及至政治與軍事等領域。無庸置疑,在印太架構下,川普政府下定決心在印太戰略的大架構下重塑美國的對中政策,一方面,華府將北京定位為急切改變區域現狀的修正主義強權,另一方面,川普也視中國大陸為戰略競爭者,意圖挑戰與減損美國在此區域的權力、利益與影響力。本文的主要目的在於探討川普採取更強勢與衝突性對中政策的背後動機,並分析其對印太戰略所產生的複雜影響。zh_TW2664-2700國內否TWN
60 104/2 統計系 陳淑嬌 助理教授 期刊論文 發佈 從韓國科技評估制度探討科技風險治理之重要性 , [104-2] :從韓國科技評估制度探討科技風險治理之重要性期刊論文從韓國科技評估制度探討科技風險治理之重要性陳淑嬌科技評估;風險治理臺灣經濟研究月刊 39(4), p.14-20zh_TW1023-8867國內否TWN
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