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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PT Journal Article
TI Nonlocal fluctuation effects in clean superconductor
AU Varlamov A A
FAU Varlamov AA
AU Livanov D V
FAU Livanov DV
AU Savona G
FAU Savona G
DP 10 Sup, 2001
TA Усп. физ. наук
VI 171
IP 13
PG 94-98
RX 10.1070/1063-7869/44/10S/S21
URL https://ufn.ru/ru/articles/2001/13/u/
SO Усп. физ. наук 2001 Sup 10;171(13):94-98

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