Nonlinearity and Dynamic Phase Transition of Charge-density-wave Lattice
學年 95
學期 2
出版(發表)日期 2007-05-01
作品名稱 Nonlinearity and Dynamic Phase Transition of Charge-density-wave Lattice
著者 Du, Chao-hung; Lo, Chung-yu; Lin, Hsiu-hau; Chang, Shih-lin
單位 淡江大學物理學系
出版者 College Park: American Institute of Physics
著錄名稱、卷期、頁數 Journal of Applied Physics 101(10), 104915(5pages)
摘要 We report the investigation of the dynamic behavior of charge-density waves (CDWs) in a quasi-one-dimensional material K0.3 Mo O3 using x-ray scattering and multiple x-ray diffraction. Under the application of voltages, we demonstrate that the occurrence of nonlinear conductivity caused by CDW is through the internal deformation of the CDW lattice, i.e., a phase jump of 2π, as the applied voltage exceeds the threshold. By measuring the evolution of peak width of satellite reflections as a function of the field strength, we also report that the CDW lattice can be driven to move and undergo a dynamic phase transition, i.e., from the disordered pinning state to ordered moving solid state, and finally, to disordered moving liquid.
關鍵字 charge density waves; potassium compounds; X-ray scattering; X-ray diffraction; one-dimensional conductivity; deformation; solid-state phase transformations
語言 en
ISSN 0021-8979 1089-7550
期刊性質 國外
收錄於 SCI
國別 USA
出版型式 紙本 電子版

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