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Mesoscopic superconductivity
Nonlocal fluctuation effects in clean superconductor
A. A. Varlamova, D. V. Livanovb, G. Savonaa a Istituto Nazionale di Fisica della Materia-Unità "Tor Vergata", Dipartimento di Scienze e Tecnologie Fisiche ed
Energetiche, Università di Roma "Tor Vergata", via di Tor Vergata 110, 00133 Roma, Italy
b Moscow State Institute of Steel and Alloys, Leninskiĭ prosp. 4, 117936 Moscow, Russian Federation
Abstract:
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.
Citation:
A. A. Varlamov, D. V. Livanov, G. Savona, “Nonlocal fluctuation effects in clean superconductor”, UFN, 171, supplement № 10 (2001), 94–98; Phys. Usp., 44:10 suppl. (2001), s94–s98
Linking options:
https://www.mathnet.ru/eng/ufn5640 https://www.mathnet.ru/eng/ufn/v171/i13/p94
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