Anisotropies of the Lower and Upper Critical Fields in MgB2 Single Crystals

L. Lyard; P. Szabó; T. Klein; J. Marcus; C. Marcenat; K. H. Kim; B. W. Kang; H. S. Lee; S. I. Lee

Anisotropies of the Lower and Upper Critical Fields in MgB₂ Single Crystals

L. Lyard, P. Szabó, T. Klein, J. Marcus, C. Marcenat, K. H. Kim, B. W. Kang, H. S. Lee, S. I. Lee

École Polytechnique

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

Abstract

The magnetization measurements on quality single crystals of MgB ₂ were presented. The temperature dependence of the upper and lower critical fields was deduced from these measurements along the two main crystallographic directions. MgB₂ was described by a single field dependent anisotropy parameter. The results show that γ_Hc1 and γ_Hc2 not only differ in absolute value at low temperature but also have opposite temperature dependencies in MgB₂.

Original language	English
Article number	057001
Pages (from-to)	570011-570014
Number of pages	4
Journal	Physical Review Letters
Volume	92
Issue number	5
Publication status	Published - 6 Feb 2004

Cite this

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title = "Anisotropies of the Lower and Upper Critical Fields in MgB2 Single Crystals",

abstract = "The magnetization measurements on quality single crystals of MgB 2 were presented. The temperature dependence of the upper and lower critical fields was deduced from these measurements along the two main crystallographic directions. MgB2 was described by a single field dependent anisotropy parameter. The results show that γHc1 and γHc2 not only differ in absolute value at low temperature but also have opposite temperature dependencies in MgB2.",

author = "L. Lyard and P. Szab{\'o} and T. Klein and J. Marcus and C. Marcenat and Kim, \{K. H.\} and Kang, \{B. W.\} and Lee, \{H. S.\} and Lee, \{S. I.\}",

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T1 - Anisotropies of the Lower and Upper Critical Fields in MgB2 Single Crystals

AU - Lyard, L.

AU - Szabó, P.

AU - Klein, T.

AU - Marcus, J.

AU - Marcenat, C.

AU - Kim, K. H.

AU - Kang, B. W.

AU - Lee, H. S.

AU - Lee, S. I.

PY - 2004/2/6

Y1 - 2004/2/6

N2 - The magnetization measurements on quality single crystals of MgB 2 were presented. The temperature dependence of the upper and lower critical fields was deduced from these measurements along the two main crystallographic directions. MgB2 was described by a single field dependent anisotropy parameter. The results show that γHc1 and γHc2 not only differ in absolute value at low temperature but also have opposite temperature dependencies in MgB2.

AB - The magnetization measurements on quality single crystals of MgB 2 were presented. The temperature dependence of the upper and lower critical fields was deduced from these measurements along the two main crystallographic directions. MgB2 was described by a single field dependent anisotropy parameter. The results show that γHc1 and γHc2 not only differ in absolute value at low temperature but also have opposite temperature dependencies in MgB2.

M3 - Article

AN - SCOPUS:1642271605

SN - 0031-9007

VL - 92

SP - 570011

EP - 570014

JO - Physical Review Letters

JF - Physical Review Letters

IS - 5

M1 - 057001

ER -

Anisotropies of the Lower and Upper Critical Fields in MgB2 Single Crystals

Abstract

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Anisotropies of the Lower and Upper Critical Fields in MgB₂ Single Crystals