Anisotropy of the upper critical field and critical current in single crystal MgB2

L. Lyard; P. Samuely; P. Szabo; T. Klein; C. Marcenat; L. Paulius; K. H.P. Kim; C. U. Jung; H. S. Lee; B. Kang; S. Choi; S. I. Lee; J. Marcus; S. Blanchard; A. G.M. Jansen; U. Welp; G. Karapetrov; W. K. Kwok

Anisotropy of the upper critical field and critical current in single crystal MgB₂

L. Lyard, P. Samuely, P. Szabo, T. Klein, C. Marcenat, L. Paulius, K. H.P. Kim, C. U. Jung, H. S. Lee, B. Kang, S. Choi, S. I. Lee, J. Marcus, S. Blanchard, A. G.M. Jansen, U. Welp, G. Karapetrov, W. K. Kwok

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

Abstract

We report on specific-heat, high-magnetic-field transport, and ac-susceptibility measurements on MgB₂ single crystals. The upper critical field for magnetic fields perpendicular and parallel to the basal planes is presented in the entire temperature range. A very different temperature dependence has been observed in the two directions, which yields a temperature-dependent anisotropy with Γ∼5 at low temperatures and ∼2 near T_c. A peak effect is observed for μ₀H∼2 T parallel to the c axis, and the critical current density presents a sharp maximum for H parallel to the ab plane.

Original language	English
Article number	180502
Pages (from-to)	1805021-1805024
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	66
Issue number	18
Publication status	Published - 1 Nov 2002
Externally published	Yes

Cite this

Lyard, L., Samuely, P., Szabo, P., Klein, T., Marcenat, C., Paulius, L., Kim, K. H. P., Jung, C. U., Lee, H. S., Kang, B., Choi, S., Lee, S. I., Marcus, J., Blanchard, S., Jansen, A. G. M., Welp, U., Karapetrov, G., & Kwok, W. K. (2002). Anisotropy of the upper critical field and critical current in single crystal MgB₂. Physical Review B - Condensed Matter and Materials Physics, 66(18), 1805021-1805024. Article 180502.

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title = "Anisotropy of the upper critical field and critical current in single crystal MgB2",

abstract = "We report on specific-heat, high-magnetic-field transport, and ac-susceptibility measurements on MgB2 single crystals. The upper critical field for magnetic fields perpendicular and parallel to the basal planes is presented in the entire temperature range. A very different temperature dependence has been observed in the two directions, which yields a temperature-dependent anisotropy with Γ∼5 at low temperatures and ∼2 near Tc. A peak effect is observed for μ0H∼2 T parallel to the c axis, and the critical current density presents a sharp maximum for H parallel to the ab plane.",

author = "L. Lyard and P. Samuely and P. Szabo and T. Klein and C. Marcenat and L. Paulius and Kim, \{K. H.P.\} and Jung, \{C. U.\} and Lee, \{H. S.\} and B. Kang and S. Choi and Lee, \{S. I.\} and J. Marcus and S. Blanchard and Jansen, \{A. G.M.\} and U. Welp and G. Karapetrov and Kwok, \{W. K.\}",

year = "2002",

month = nov,

day = "1",

language = "English",

volume = "66",

pages = "1805021--1805024",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

number = "18",

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Lyard, L, Samuely, P, Szabo, P, Klein, T, Marcenat, C, Paulius, L, Kim, KHP, Jung, CU, Lee, HS, Kang, B, Choi, S, Lee, SI, Marcus, J, Blanchard, S, Jansen, AGM, Welp, U, Karapetrov, G & Kwok, WK 2002, 'Anisotropy of the upper critical field and critical current in single crystal MgB₂', Physical Review B - Condensed Matter and Materials Physics, vol. 66, no. 18, 180502, pp. 1805021-1805024.

TY - JOUR

T1 - Anisotropy of the upper critical field and critical current in single crystal MgB2

AU - Lyard, L.

AU - Samuely, P.

AU - Szabo, P.

AU - Klein, T.

AU - Marcenat, C.

AU - Paulius, L.

AU - Kim, K. H.P.

AU - Jung, C. U.

AU - Lee, H. S.

AU - Kang, B.

AU - Choi, S.

AU - Lee, S. I.

AU - Marcus, J.

AU - Blanchard, S.

AU - Jansen, A. G.M.

AU - Welp, U.

AU - Karapetrov, G.

AU - Kwok, W. K.

PY - 2002/11/1

Y1 - 2002/11/1

N2 - We report on specific-heat, high-magnetic-field transport, and ac-susceptibility measurements on MgB2 single crystals. The upper critical field for magnetic fields perpendicular and parallel to the basal planes is presented in the entire temperature range. A very different temperature dependence has been observed in the two directions, which yields a temperature-dependent anisotropy with Γ∼5 at low temperatures and ∼2 near Tc. A peak effect is observed for μ0H∼2 T parallel to the c axis, and the critical current density presents a sharp maximum for H parallel to the ab plane.

AB - We report on specific-heat, high-magnetic-field transport, and ac-susceptibility measurements on MgB2 single crystals. The upper critical field for magnetic fields perpendicular and parallel to the basal planes is presented in the entire temperature range. A very different temperature dependence has been observed in the two directions, which yields a temperature-dependent anisotropy with Γ∼5 at low temperatures and ∼2 near Tc. A peak effect is observed for μ0H∼2 T parallel to the c axis, and the critical current density presents a sharp maximum for H parallel to the ab plane.

M3 - Article

AN - SCOPUS:0000913345

SN - 1098-0121

VL - 66

SP - 1805021

EP - 1805024

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 18

M1 - 180502

ER -

Anisotropy of the upper critical field and critical current in single crystal MgB2

Abstract

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Anisotropy of the upper critical field and critical current in single crystal MgB₂