Lower critical field, anisotropy, and two-gap features of LiFeAs

K. Sasmal; B. Lv; Z. Tang; F. Y. Wei; Y. Y. Xue; A. M. Guloy; C. W. Chu

doi:10.1103/PhysRevB.81.144512

Lower critical field, anisotropy, and two-gap features of LiFeAs

K. Sasmal, B. Lv, Z. Tang, F. Y. Wei, Y. Y. Xue, A. M. Guloy, C. W. Chu

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Abstract

The magnetic properties of LiFeAs, as single crystalline and polycrystalline samples, were investigated. The lower critical field deduced from the vortex penetration of two single crystals appears to be almost isotropic with a temperature dependence closer to that of two-gap superconductors. The parameters extracted from the reversible magnetizations of sintered polycrystalline samples are in good agreement with those from the single-crystal data.

Original language	English
Article number	144512
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	81
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.81.144512
Publication status	Published - 2010 Apr 13

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.81.144512

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abstract = "The magnetic properties of LiFeAs, as single crystalline and polycrystalline samples, were investigated. The lower critical field deduced from the vortex penetration of two single crystals appears to be almost isotropic with a temperature dependence closer to that of two-gap superconductors. The parameters extracted from the reversible magnetizations of sintered polycrystalline samples are in good agreement with those from the single-crystal data.",

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AU - Sasmal, K.

AU - Lv, B.

AU - Tang, Z.

AU - Wei, F. Y.

AU - Xue, Y. Y.

AU - Guloy, A. M.

AU - Chu, C. W.

PY - 2010/4/13

Y1 - 2010/4/13

N2 - The magnetic properties of LiFeAs, as single crystalline and polycrystalline samples, were investigated. The lower critical field deduced from the vortex penetration of two single crystals appears to be almost isotropic with a temperature dependence closer to that of two-gap superconductors. The parameters extracted from the reversible magnetizations of sintered polycrystalline samples are in good agreement with those from the single-crystal data.

AB - The magnetic properties of LiFeAs, as single crystalline and polycrystalline samples, were investigated. The lower critical field deduced from the vortex penetration of two single crystals appears to be almost isotropic with a temperature dependence closer to that of two-gap superconductors. The parameters extracted from the reversible magnetizations of sintered polycrystalline samples are in good agreement with those from the single-crystal data.

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ER -

Lower critical field, anisotropy, and two-gap features of LiFeAs

Abstract

All Science Journal Classification (ASJC) codes

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