Interaction-induced quantum dephasing in mesoscopic rings

被引：27
|
作者：
Golubev, DS [1 ]
Herrero, CP
Zaikin, AD
机构：
[1] Univ Karlsruhe, Inst Theoret Kernphys, D-76128 Karlsruhe, Germany
[2] CSIC, Inst Ciencia Mat, E-28049 Madrid, Spain
[3] Forschungszentrum Karlsruhe, Inst Nanotechnol, D-76021 Karlsruhe, Germany
[4] PN Lebedev Phys Inst, IE Tamm Dept Theoret Phys, Moscow 119991, Russia
来源：
EUROPHYSICS LETTERS | 2003年 / 63卷 / 03期
关键词：
D O I：
10.1209/epl/i2003-00537-2
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Combining nonperturbative techniques with Monte Carlo simulations, we demonstrate that quantum coherence effects for a particle on a ring are suppressed beyond a finite length L-phi even at zero temperature if the particle is coupled to a diffusive electron gas by means of long-range Coulomb interaction. This length is consistent with L-phi derived from a weak-localization type analysis.
引用
收藏
页码：426 / 432
页数：7
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