1998/03/31 by Yu. B. Khavin, M. E. Gershenson, A. L. Bogdanov
Engineering · Physics and Astronomy · #Coherence (philosophical gambling strategy) #Condensed matter physics #Crossover #Electron #Physics #Quantum #Quantum and electron transport phenomena #Quantum decoherence #Quantum mechanics #Quasiparticle #Semiconductor materials and devices #Superconductivity #Surface and Thin Film Phenomena #cond-mat.dis-nn
paper · pdf · doi:10.1103/physrevlett.81.1066
4 pages, 3 figures; the final version to appear in Phys. Rev. Lett
arxiv created 1998/06/22 · openalex publication_date 1998/08/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The temperature and magnetic-field dependences of the resistance of one-dimensional (1D) conductors have been studied in the vicinity of the Thouless crossover. We find that the temperature dependence of the phase coherence time \ensuremathτ_\ensuremathφ does not saturate, and the quasiparticle states remain well defined on the weak localization side of the crossover. This fact, as well as observation of the Thouless crossover in 1D samples, argues against the idea of intrinsic decoherence by zero-point fluctuations of the electrons [Mohanty et al., Phys. Rev. Lett. 78, 3366 (1997)]. We believe that frequently observed saturation of \ensuremathτ_\ensuremathφ(T) is caused by the external microwave noise.