Giant nernst effect due to fluctuating cooper Pairs in superconductors

M. N. Serbyn; M. N. Serbyn; M. A. Skvortsov; M. A. Skvortsov; A. A. Varlamov; V. Galitski

doi:10.1063/1.3149485

Giant nernst effect due to fluctuating cooper Pairs in superconductors

M. N. Serbyn, M. N. Serbyn, M. A. Skvortsov, M. A. Skvortsov, A. A. Varlamov, V. Galitski

School of Physics and Astronomy

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

1 Citation (Scopus)

Abstract

A theory of the fluctuation-induced Nernst efl'ect is developed for a two-dimensional superconductor in a perpendicular magnetic field. First, we derive a simple phenomenological formula for the Nernst coefficient, which naturally explains the giant Nernst signal due to fluctuating Cooper pairs. The latter signal is shown to be large even far from the transition and may exceed by orders of magnitude the Fermi liquid terms. We also present a complete microscopic calculation of the Nernst coefficient for arbitrary magnetic fields and temperatures, which is based on the standard definition of heat current vertices. It is shown that the magnitude and the behavior of the Nernst signal observed experimentally in disordered superconducting films can be well understood on the basis of superconducting fluctuation theory.

Original language	English
Title of host publication	Advances in Theoretical Physics
Subtitle of host publication	Landau Memorial Conference
Editors	Vladimir Lebedev, Mikhail Feigel'man
Place of Publication	Melville, New York USA
Publisher	American Institute of Physics
Pages	140-145
Number of pages	6
ISBN (Print)	978073540671
DOIs	https://doi.org/10.1063/1.3149485
Publication status	Published - 22 Jul 2009
Event	Landau Memorial Conference 2008 - Chernogolovka, Russian Federation Duration: 22 Jun 2008 → 26 Jun 2008 https://pubs.aip.org/aip/acp/issue/1134/1

Publication series

Name	AIP Conference Proceedings
Publisher	American Institute of Physics
Number	1
Volume	1134
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	Landau Memorial Conference 2008
Country/Territory	Russian Federation
City	Chernogolovka
Period	22/06/08 → 26/06/08
Internet address	https://pubs.aip.org/aip/acp/issue/1134/1

Keywords

Nerst effect
Supercondictors

Access to Document

10.1063/1.3149485

Cite this

Serbyn, M. N., Serbyn, M. N., Skvortsov, M. A., Skvortsov, M. A., Varlamov, A. A., & Galitski, V. (2009). Giant nernst effect due to fluctuating cooper Pairs in superconductors. In V. Lebedev, & M. Feigel'man (Eds.), Advances in Theoretical Physics: Landau Memorial Conference (pp. 140-145). (AIP Conference Proceedings; Vol. 1134, No. 1). American Institute of Physics. https://doi.org/10.1063/1.3149485

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abstract = "A theory of the fluctuation-induced Nernst efl'ect is developed for a two-dimensional superconductor in a perpendicular magnetic field. First, we derive a simple phenomenological formula for the Nernst coefficient, which naturally explains the giant Nernst signal due to fluctuating Cooper pairs. The latter signal is shown to be large even far from the transition and may exceed by orders of magnitude the Fermi liquid terms. We also present a complete microscopic calculation of the Nernst coefficient for arbitrary magnetic fields and temperatures, which is based on the standard definition of heat current vertices. It is shown that the magnitude and the behavior of the Nernst signal observed experimentally in disordered superconducting films can be well understood on the basis of superconducting fluctuation theory.",

keywords = "Nerst effect, Supercondictors",

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Serbyn, MN, Serbyn, MN, Skvortsov, MA, Skvortsov, MA, Varlamov, AA & Galitski, V 2009, Giant nernst effect due to fluctuating cooper Pairs in superconductors. in V Lebedev & M Feigel'man (eds), Advances in Theoretical Physics: Landau Memorial Conference. AIP Conference Proceedings, no. 1, vol. 1134, American Institute of Physics, Melville, New York USA, pp. 140-145, Landau Memorial Conference 2008, Chernogolovka, Russian Federation, 22/06/08. https://doi.org/10.1063/1.3149485

Giant nernst effect due to fluctuating cooper Pairs in superconductors. / Serbyn, M. N.; Serbyn, M. N.; Skvortsov, M. A. et al.
Advances in Theoretical Physics: Landau Memorial Conference. ed. / Vladimir Lebedev; Mikhail Feigel'man. Melville, New York USA: American Institute of Physics, 2009. p. 140-145 (AIP Conference Proceedings; Vol. 1134, No. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference Paper › Research › peer-review

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N2 - A theory of the fluctuation-induced Nernst efl'ect is developed for a two-dimensional superconductor in a perpendicular magnetic field. First, we derive a simple phenomenological formula for the Nernst coefficient, which naturally explains the giant Nernst signal due to fluctuating Cooper pairs. The latter signal is shown to be large even far from the transition and may exceed by orders of magnitude the Fermi liquid terms. We also present a complete microscopic calculation of the Nernst coefficient for arbitrary magnetic fields and temperatures, which is based on the standard definition of heat current vertices. It is shown that the magnitude and the behavior of the Nernst signal observed experimentally in disordered superconducting films can be well understood on the basis of superconducting fluctuation theory.

AB - A theory of the fluctuation-induced Nernst efl'ect is developed for a two-dimensional superconductor in a perpendicular magnetic field. First, we derive a simple phenomenological formula for the Nernst coefficient, which naturally explains the giant Nernst signal due to fluctuating Cooper pairs. The latter signal is shown to be large even far from the transition and may exceed by orders of magnitude the Fermi liquid terms. We also present a complete microscopic calculation of the Nernst coefficient for arbitrary magnetic fields and temperatures, which is based on the standard definition of heat current vertices. It is shown that the magnitude and the behavior of the Nernst signal observed experimentally in disordered superconducting films can be well understood on the basis of superconducting fluctuation theory.

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Serbyn MN, Serbyn MN, Skvortsov MA, Skvortsov MA, Varlamov AA, Galitski V. Giant nernst effect due to fluctuating cooper Pairs in superconductors. In Lebedev V, Feigel'man M, editors, Advances in Theoretical Physics: Landau Memorial Conference. Melville, New York USA: American Institute of Physics. 2009. p. 140-145. (AIP Conference Proceedings; 1). doi: 10.1063/1.3149485

Giant nernst effect due to fluctuating cooper Pairs in superconductors

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