Dynamic Phase Transition of the Charge-density Wave Lattice
學年 94
學期 1
出版(發表)日期 2005-08-01
作品名稱 Dynamic Phase Transition of the Charge-density Wave Lattice
著者 Du, Chao-hung; Tang, Mau-tsu; Stetsko, Yuri P; Lee, Yen-ru; Wang, Chung-wei; Cheng, Cheng-wen; Chang, Shih-lin; Lo, Chung-Yu; Lee, Jey-Jau
單位 淡江大學物理學系
出版者 Malden: Wiley-Blackwell Publishing, Inc.
著錄名稱、卷期、頁數 Acta Crystallographica, Section A 61, pp.C322
摘要 The dynamic behaviour of the periodic media with lattice imperfections is ubiquitous and long-standing problem in many condensed material systems, because of the correlation to the unusual physical phenomena, for instance, the charge-density waves/spindensity waves to the nonlinear conductivity, the charge/spin stripes to the CMR and the high-TC superconductivity, and the vortex lattice to superconductivity. In static systems, the imperfections in a medium result in a disordered ground state which prevents the system from forming a long-range order at low temperatures, therefore giving rise to unusual physical properties. In dynamic systems under a driving force, the disordered medium produces a more fascinating phase diagram. Analogous to the vortex lattice, the inhomogeneous distribution of charge densities also forms a periodic lattice below the transition temperature, namely charge-density waves (CDWs). 
 Combining x-ray scattering and multiple diffraction, we demonstrate that the CDW lattice can be driven by a driving force to move and undergo a dynamic phase transition, i.e. from the disordered pinning state → ordered moving solid state → disordered moving liquid, and the nonlinear conductivity occurs through a phase jump of 2π.
關鍵字 charge-density wave;phase transition;x-ray scattering
語言 en
ISSN 2053-2733 0108-7673
期刊性質 國外
通訊作者 Du, Chao-hung
國別 USA
出版型式 紙本

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/72752 )