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This article is cited in 1 scientific paper (total in 1 paper)
CONDENSED MATTER
Reentrant orbital effect against superconductivity in the quasi-two-dimensional superconductor nbs2
A. G. Lebedab a L. D. Landau Institute for Theoretical Physics, Russian Academy of Sciences, 117334 Moscow, Russia
b Department of Physics, University of Arizona, 1118 E. 4-th Street, Tucson, AZ 85721, USA
Abstract:
We derive an integral equation for the superconducting gap, which takes into account the quantum nature of electron motion in a parallel magnetic field in a quasi-two-dimensional superconductor in the presence of a nonzero perpendicular field component. By comparison of our theoretical results with the recent experimental data obtained on NbS2, we show that the orbital effect against superconductivity partially destroys superconductivity in the so-called Ginzburg–Landau area of this quasi-two-dimensional conductor, as expected. Nevertheless, at relatively high magnetic fields, $H \simeq 15$ T, the orbital effect starts to improve the Fulde–Ferrell–Larkin–Ovchinnikov phase in NbS2, due to the quantum nature of electron motion in a parallel magnetic field. In our opinion, this is the clearest demonstration that the orbital effect against superconductivity in a parallel magnetic field has a reentrant nature.
Received: 02.09.2021 Revised: 22.09.2021 Accepted: 22.09.2021
Citation:
A. G. Lebed, “Reentrant orbital effect against superconductivity in the quasi-two-dimensional superconductor nbs2”, Pis'ma v Zh. Èksper. Teoret. Fiz., 114:8 (2021), 551–552; JETP Letters, 114:8 (2021), 479–485
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https://www.mathnet.ru/eng/jetpl6534 https://www.mathnet.ru/eng/jetpl/v114/i8/p551
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Abstract page: | 68 | References: | 13 | First page: | 9 |
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