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The Nernst effect in Corbino geometry. / Kavokin, A. V.; Altshuler, B. L.; Sharapov, S. G.; Grigoryev, P. S.; Varlamov, A. A.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 117, No. 6, 11.02.2020, p. 2846-2851.

Research output: Contribution to journalArticlepeer-review

Harvard

Kavokin, AV, Altshuler, BL, Sharapov, SG, Grigoryev, PS & Varlamov, AA 2020, 'The Nernst effect in Corbino geometry', Proceedings of the National Academy of Sciences of the United States of America, vol. 117, no. 6, pp. 2846-2851. https://doi.org/10.1073/pnas.1916567117

APA

Kavokin, A. V., Altshuler, B. L., Sharapov, S. G., Grigoryev, P. S., & Varlamov, A. A. (2020). The Nernst effect in Corbino geometry. Proceedings of the National Academy of Sciences of the United States of America, 117(6), 2846-2851. https://doi.org/10.1073/pnas.1916567117

Vancouver

Kavokin AV, Altshuler BL, Sharapov SG, Grigoryev PS, Varlamov AA. The Nernst effect in Corbino geometry. Proceedings of the National Academy of Sciences of the United States of America. 2020 Feb 11;117(6):2846-2851. https://doi.org/10.1073/pnas.1916567117

Author

Kavokin, A. V. ; Altshuler, B. L. ; Sharapov, S. G. ; Grigoryev, P. S. ; Varlamov, A. A. / The Nernst effect in Corbino geometry. In: Proceedings of the National Academy of Sciences of the United States of America. 2020 ; Vol. 117, No. 6. pp. 2846-2851.

BibTeX

@article{0992729b1b6a4716bdf968291e91894e,
title = "The Nernst effect in Corbino geometry",
abstract = "We study the manifestation of the Nernst effect in the Corbino disk subjected to the normal external magnetic field and to the radial temperature gradient. The Corbino geometry offers a precious opportunity for the direct measurement of the magnetization currents that are masked by kinetic contributions to the Nernst current in the conventional geometry. The magnetization currents, also referred to as the edge currents, are independent on the conductivity of the sample which is why they can be conveniently described within the thermodynamic approach. They can be related to the Landau thermodynamic potential for an infinite system. We demonstrate that the observable manifestation of this, purely thermodynamic, Nernst effect consists in the strong oscillations of the magnetic field measured in the center of the disk as a function of the external field. The oscillations depend on the temperature difference at the edges of the disk. Dirac fermions and 2D electrons with a parabolic spectrum are characterized by oscillations of different phase and frequency. We predict qualitatively different power dependencies of the magnitude of the Nernst signal on the chemical potential for normal and Dirac carriers.",
keywords = "Corbino disk, Magnetic oscillations, Nernst effect",
author = "Kavokin, {A. V.} and Altshuler, {B. L.} and Sharapov, {S. G.} and Grigoryev, {P. S.} and Varlamov, {A. A.}",
note = "Publisher Copyright: {\textcopyright} 2020 National Academy of Sciences. All rights reserved.",
year = "2020",
month = feb,
day = "11",
doi = "10.1073/pnas.1916567117",
language = "English",
volume = "117",
pages = "2846--2851",
journal = "Proceedings of the National Academy of Sciences of the United States of America",
issn = "0027-8424",
publisher = "National Academy of Sciences",
number = "6",

}

RIS

TY - JOUR

T1 - The Nernst effect in Corbino geometry

AU - Kavokin, A. V.

AU - Altshuler, B. L.

AU - Sharapov, S. G.

AU - Grigoryev, P. S.

AU - Varlamov, A. A.

N1 - Publisher Copyright: © 2020 National Academy of Sciences. All rights reserved.

PY - 2020/2/11

Y1 - 2020/2/11

N2 - We study the manifestation of the Nernst effect in the Corbino disk subjected to the normal external magnetic field and to the radial temperature gradient. The Corbino geometry offers a precious opportunity for the direct measurement of the magnetization currents that are masked by kinetic contributions to the Nernst current in the conventional geometry. The magnetization currents, also referred to as the edge currents, are independent on the conductivity of the sample which is why they can be conveniently described within the thermodynamic approach. They can be related to the Landau thermodynamic potential for an infinite system. We demonstrate that the observable manifestation of this, purely thermodynamic, Nernst effect consists in the strong oscillations of the magnetic field measured in the center of the disk as a function of the external field. The oscillations depend on the temperature difference at the edges of the disk. Dirac fermions and 2D electrons with a parabolic spectrum are characterized by oscillations of different phase and frequency. We predict qualitatively different power dependencies of the magnitude of the Nernst signal on the chemical potential for normal and Dirac carriers.

AB - We study the manifestation of the Nernst effect in the Corbino disk subjected to the normal external magnetic field and to the radial temperature gradient. The Corbino geometry offers a precious opportunity for the direct measurement of the magnetization currents that are masked by kinetic contributions to the Nernst current in the conventional geometry. The magnetization currents, also referred to as the edge currents, are independent on the conductivity of the sample which is why they can be conveniently described within the thermodynamic approach. They can be related to the Landau thermodynamic potential for an infinite system. We demonstrate that the observable manifestation of this, purely thermodynamic, Nernst effect consists in the strong oscillations of the magnetic field measured in the center of the disk as a function of the external field. The oscillations depend on the temperature difference at the edges of the disk. Dirac fermions and 2D electrons with a parabolic spectrum are characterized by oscillations of different phase and frequency. We predict qualitatively different power dependencies of the magnitude of the Nernst signal on the chemical potential for normal and Dirac carriers.

KW - Corbino disk

KW - Magnetic oscillations

KW - Nernst effect

UR - http://www.scopus.com/inward/record.url?scp=85079324011&partnerID=8YFLogxK

U2 - 10.1073/pnas.1916567117

DO - 10.1073/pnas.1916567117

M3 - Article

C2 - 31992642

AN - SCOPUS:85079324011

VL - 117

SP - 2846

EP - 2851

JO - Proceedings of the National Academy of Sciences of the United States of America

JF - Proceedings of the National Academy of Sciences of the United States of America

SN - 0027-8424

IS - 6

ER -

ID: 49363296