Science-advisor
REGISTER info/FAQ
Login
username
password
     
forgot password?
register here
 
Research articles
  search articles
  reviews guidelines
  reviews
  articles index
My Pages
my alerts
  my messages
  my reviews
  my favorites
 
 
Stat
Members: 3643
Articles: 2'488'730
Articles rated: 2609

29 March 2024
 
  » arxiv » cond-mat/9910144

 Article overview


On the relationship between the noise-induced persistent current and dephasing rate
V.E.Kravtsov ; B.L.Altshuler ;
Date 9 Oct 1999
Journal Phys. Rev. Lett., 84 (2000) 3394
Subject Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall
AbstractAC noise in disordered conductors causes both dephasing of the electron wave functions and a DC current around a mesoscopic ring. We demonstrate that the dephasing rate tau_{phi}^{-1} in long wires and the DC current, induced by the same noise and averaged over an ensemble of small rings are connected. The ensemble-averaged h/2e flux harmonic of the current and the dephasing rate caused by the same uniform in space high frequency AC field are related in a remarkably simple way: tau_{phi}=C e. Here e is an electron charge, and the constant C depends on the Dyson symmetry class. For a pure potential disorder the current is diamagnetic C = -(4/pi) and in the presence of strong spin-orbit scattering it is paramagnetic C =(2/pi). The relationship seems to agree reasonably with experiments. This suggests that the two puzzles: anomalously large persistent current [L.P.Levy et al., Phys.Rev.Lett., v.64, 2074 (1990)] and the low-temperature saturation of the dephasing [P.Mohanty et al., Phys.Rev.Lett., v.78, 3366 (1997)] may have a common solution.
Source arXiv, cond-mat/9910144
Services Forum | Review | PDF | Favorites   
 
Visitor rating: did you like this article? no 1   2   3   4   5   yes

No review found.
 Did you like this article?

This article or document is ...
important:
of broad interest:
readable:
new:
correct:
Global appreciation:

  Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.

browser claudebot






ScienXe.org
» my Online CV
» Free


News, job offers and information for researchers and scientists:
home  |  contact  |  terms of use  |  sitemap
Copyright © 2005-2024 - Scimetrica