Two-band effects in the critical fields of MgB2

P. Szabó; P. Samuely; J. Kačmarčík; L. Lyard; T. Klein; J. Marcus; C. Marcenat

doi:10.1007/s10582-004-0116-1

Two-band effects in the critical fields of MgB₂

P. Szabó
, P. Samuely
, J. Kačmarčík
, L. Lyard
, T. Klein
, J. Marcus
, C. Marcenat

Slovak Academy of Sciences
LTHE (UMR 5564 CNRS/IRD/Université de Grenoble)
Univ. Joseph Fourier-Grenoble 1

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The influence of the two-gap/two-band superconductivity on the anisotropy properties of MgB₂ is discussed. It is shown that due to the different anisotropies and different field sensitivities of both bands the lower critical field H_c1 and the upper critical one H_c2 reveal very different and temperature-dependent anisotropies. The deviations of the angular dependence of H_c2 (Θ) from the classical form is discussed in the framework of the two-band model.

Original language	English
Pages (from-to)	D449-D452
Journal	Czechoslovak Journal of Physics
Volume	54
Issue number	SUPPL. 4
DOIs	https://doi.org/10.1007/s10582-004-0116-1
Publication status	Published - 1 Jan 2004
Externally published	Yes

Keywords

Critical magnetic fields
Two-band superconductivity

Access to Document

10.1007/s10582-004-0116-1

Cite this

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title = "Two-band effects in the critical fields of MgB2 ",

abstract = "The influence of the two-gap/two-band superconductivity on the anisotropy properties of MgB2 is discussed. It is shown that due to the different anisotropies and different field sensitivities of both bands the lower critical field Hc1 and the upper critical one Hc2 reveal very different and temperature-dependent anisotropies. The deviations of the angular dependence of Hc2 (Θ) from the classical form is discussed in the framework of the two-band model.",

keywords = "Critical magnetic fields, Two-band superconductivity",

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T1 - Two-band effects in the critical fields of MgB2

AU - Szabó, P.

AU - Samuely, P.

AU - Kačmarčík, J.

AU - Lyard, L.

AU - Klein, T.

AU - Marcus, J.

AU - Marcenat, C.

PY - 2004/1/1

Y1 - 2004/1/1

N2 - The influence of the two-gap/two-band superconductivity on the anisotropy properties of MgB2 is discussed. It is shown that due to the different anisotropies and different field sensitivities of both bands the lower critical field Hc1 and the upper critical one Hc2 reveal very different and temperature-dependent anisotropies. The deviations of the angular dependence of Hc2 (Θ) from the classical form is discussed in the framework of the two-band model.

AB - The influence of the two-gap/two-band superconductivity on the anisotropy properties of MgB2 is discussed. It is shown that due to the different anisotropies and different field sensitivities of both bands the lower critical field Hc1 and the upper critical one Hc2 reveal very different and temperature-dependent anisotropies. The deviations of the angular dependence of Hc2 (Θ) from the classical form is discussed in the framework of the two-band model.

KW - Critical magnetic fields

KW - Two-band superconductivity

U2 - 10.1007/s10582-004-0116-1

DO - 10.1007/s10582-004-0116-1

M3 - Article

AN - SCOPUS:15744378026

SN - 0011-4626

VL - 54

SP - D449-D452

JO - Czechoslovak Journal of Physics

JF - Czechoslovak Journal of Physics

IS - SUPPL. 4