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    题名: Nonlinearity and Dynamic Phase Transition of Charge-density-wave Lattice
    作者: Du, Chao-hung;Lo, Chung-yu;Lin, Hsiu-hau;Chang, Shih-lin
    贡献者: 淡江大學物理學系
    关键词: charge density waves;potassium compounds;X-ray scattering;X-ray diffraction;one-dimensional conductivity;deformation;solid-state phase transformations
    日期: 2007-05-01
    上传时间: 2012-02-09 11:27:44 (UTC+8)
    出版者: College Park: American Institute of Physics
    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.
    關聯: Journal of Applied Physics 101(12), 104915(5pages)
    DOI: 10.1063/1.2738408
    显示于类别:[物理學系暨研究所] 期刊論文

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