Non-analytical angular dependence of the upper critical magnetic field in a quasi-one-dimensional superconductor

A. G. Lebed; O. Sepper

doi:10.1134/S0021364012150052

Non-analytical angular dependence of the upper critical magnetic field in a quasi-one-dimensional superconductor

A. G. Lebed, O. Sepper

Physics

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1 Scopus citations

Abstract

We have derived the so-called gap equation, which determines the upper critical magnetic field, perpendicular to conducting chains of a quasi-one-dimensional superconductor. By analyzing this equation at low temperatures, we have found that the calculated angular dependence of the upper critical magnetic field is qualitatively different than that in the so-called effective mass model. In particular, our theory predicts a non-analytical angular dependence of the upper critical magnetic field, H _c2(0) - H _c2(α) ~ α ^3/2, when magnetic field is close to some special crystallographic axis and makes an angle α with it. We discuss possible experiments on the superconductor (DMET) ₂I ₃ to discover this non-analytical dependence.

Original language	English (US)
Pages (from-to)	176-180
Number of pages	5
Journal	JETP Letters
Volume	96
Issue number	3
DOIs	https://doi.org/10.1134/S0021364012150052
State	Published - 2012

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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@article{747bac2eecd64e768b92f9adbd180842,

title = "Non-analytical angular dependence of the upper critical magnetic field in a quasi-one-dimensional superconductor",

abstract = "We have derived the so-called gap equation, which determines the upper critical magnetic field, perpendicular to conducting chains of a quasi-one-dimensional superconductor. By analyzing this equation at low temperatures, we have found that the calculated angular dependence of the upper critical magnetic field is qualitatively different than that in the so-called effective mass model. In particular, our theory predicts a non-analytical angular dependence of the upper critical magnetic field, H c2(0) - H c2(α) ~ α 3/2, when magnetic field is close to some special crystallographic axis and makes an angle α with it. We discuss possible experiments on the superconductor (DMET) 2I 3 to discover this non-analytical dependence.",

author = "Lebed, {A. G.} and O. Sepper",

note = "Funding Information: We are thankful to N.N. Bagmet for useful discus sions. This work was supported by the U.S. National Science Foundation (grant nos. DMR 0705986 and DMR 1104512).",

year = "2012",

doi = "10.1134/S0021364012150052",

language = "English (US)",

volume = "96",

pages = "176--180",

journal = "JETP Letters",

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TY - JOUR

T1 - Non-analytical angular dependence of the upper critical magnetic field in a quasi-one-dimensional superconductor

AU - Lebed, A. G.

AU - Sepper, O.

N1 - Funding Information: We are thankful to N.N. Bagmet for useful discus sions. This work was supported by the U.S. National Science Foundation (grant nos. DMR 0705986 and DMR 1104512).

PY - 2012

Y1 - 2012

N2 - We have derived the so-called gap equation, which determines the upper critical magnetic field, perpendicular to conducting chains of a quasi-one-dimensional superconductor. By analyzing this equation at low temperatures, we have found that the calculated angular dependence of the upper critical magnetic field is qualitatively different than that in the so-called effective mass model. In particular, our theory predicts a non-analytical angular dependence of the upper critical magnetic field, H c2(0) - H c2(α) ~ α 3/2, when magnetic field is close to some special crystallographic axis and makes an angle α with it. We discuss possible experiments on the superconductor (DMET) 2I 3 to discover this non-analytical dependence.

AB - We have derived the so-called gap equation, which determines the upper critical magnetic field, perpendicular to conducting chains of a quasi-one-dimensional superconductor. By analyzing this equation at low temperatures, we have found that the calculated angular dependence of the upper critical magnetic field is qualitatively different than that in the so-called effective mass model. In particular, our theory predicts a non-analytical angular dependence of the upper critical magnetic field, H c2(0) - H c2(α) ~ α 3/2, when magnetic field is close to some special crystallographic axis and makes an angle α with it. We discuss possible experiments on the superconductor (DMET) 2I 3 to discover this non-analytical dependence.

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JO - JETP Letters

JF - JETP Letters

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Non-analytical angular dependence of the upper critical magnetic field in a quasi-one-dimensional superconductor

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