Nonlocal fluctuation effects in clean superconductor

A.A. Varlamov^а, D.V. Livanov^б, G. Savona^а
^аUniversità degli Studi di Roma — Tor Vergata, via di Tor Vergata, 110 Roma, I-00133, Italy , Roma, Италия
^бНациональный исследовательский технологический университет "МИСиС", Ленинский пр-т 4 г Москва 119049 Russia , г. Москва, Россия

The theory of fluctuation conductivity for an arbitrary impurity concentration including ultra-clean limit ($T_\tau\gg\sqrt{T_c/T-T_c}$) is developed. It is demonstrated that the formal divergency of the fluctuation density of states contribution obtained previously for the clean case is removed by the correct treatment of the nonlocal ballistic electron scattering. We show that in the ultra-clean limit the density-of-states quantum corrections are canceled by the Maki–Thompson term and only classical paraconductivity remains.

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English fulltext is available at DOI: 10.1070/1063-7869/44/10S/S21

PACS: 74.20.−z, 74.70.−b, 74.80.-g, 03.65.Ud (все)
DOI: 10.1070/1063-7869/44/10S/S21
URL: https://ufn.ru/ru/articles/2001/13/u/
Цитата: Varlamov A A, Livanov D V, Savona G "Nonlocal fluctuation effects in clean superconductor" УФН 171 94–98 (2001)

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RT Journal
T1 Nonlocal fluctuation effects in clean superconductor
A1 Varlamov,A.A.
A1 Livanov,D.V.
A1 Savona,G.
PB Успехи физических наук
PY 2001
FD 10 Sup, 2001
JF Успехи физических наук
JO Усп. физ. наук
VO 171
IS 13
SP 94-98
DO 10.1070/1063-7869/44/10S/S21
LK https://ufn.ru/ru/articles/2001/13/u/

English citation: Varlamov A A, Livanov D V, Savona G “Nonlocal fluctuation effects in clean superconductor” Phys. Usp. 44 94–98 (2001); DOI: 10.1070/1063-7869/44/10S/S21