Decoherence and the thouless crossover in one-dimensional conductors

TY - JOUR

T1 - Decoherence and the thouless crossover in one-dimensional conductors

AU - Khavin, Yu B.

AU - Gershenson, M. E.

AU - Bogdanov, Yu B.

PY - 1998

Y1 - 1998

N2 - 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 τΦ 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 τΦ(T) is caused by the external microwave noise.

AB - 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 τΦ 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 τΦ(T) is caused by the external microwave noise.

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U2 - https://doi.org/10.1103/PhysRevLett.81.1066

DO - https://doi.org/10.1103/PhysRevLett.81.1066

M3 - Article

VL - 81

SP - 1066

EP - 1069

JO - Physical review letters

JF - Physical review letters

SN - 0031-9007

IS - 5

ER -