Structural and superconducting properties of MgB2-xBex

J. S. Ahn; Young Jin Kim; M. S. Kim; S. I. Lee; E. J. Choi

Structural and superconducting properties of MgB_2-xBe_x

J. S. Ahn, Young Jin Kim, M. S. Kim, S. I. Lee, E. J. Choi

Department of Physics

Seoul National University

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

27 Scopus citations

Abstract

We prepared MgB_2-xBe_x (x = 0, 0.2, 0.3, 0.4, and 0.6) samples where B is substituted with Be. MgB₂ structure is maintained up to x = 0.6. In-plane and interplane lattice constants were found to decrease and increase, respectively. The superconducting transition temperature T_c decreases with x. We found that the T_c decrease is correlated with in-plane contraction but is insensitive to carrier doping, which is consistent with other substitution studies such as Mg_1-xA1_xB₂ and MgB_2-xC_x. Implication of this work is discussed in terms of the two-dimensional nature of the σ band.

Original language	English
Article number	172503
Pages (from-to)	1725031-1725034
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	65
Issue number	17
State	Published - 1 May 2002

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title = "Structural and superconducting properties of MgB2-xBex",

abstract = "We prepared MgB2-xBex (x = 0, 0.2, 0.3, 0.4, and 0.6) samples where B is substituted with Be. MgB2 structure is maintained up to x = 0.6. In-plane and interplane lattice constants were found to decrease and increase, respectively. The superconducting transition temperature Tc decreases with x. We found that the Tc decrease is correlated with in-plane contraction but is insensitive to carrier doping, which is consistent with other substitution studies such as Mg1-xA1xB2 and MgB2-xCx. Implication of this work is discussed in terms of the two-dimensional nature of the σ band.",

author = "Ahn, {J. S.} and Kim, {Young Jin} and Kim, {M. S.} and Lee, {S. I.} and Choi, {E. J.}",

year = "2002",

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T1 - Structural and superconducting properties of MgB2-xBex

AU - Ahn, J. S.

AU - Kim, Young Jin

AU - Kim, M. S.

AU - Lee, S. I.

AU - Choi, E. J.

PY - 2002/5/1

Y1 - 2002/5/1

N2 - We prepared MgB2-xBex (x = 0, 0.2, 0.3, 0.4, and 0.6) samples where B is substituted with Be. MgB2 structure is maintained up to x = 0.6. In-plane and interplane lattice constants were found to decrease and increase, respectively. The superconducting transition temperature Tc decreases with x. We found that the Tc decrease is correlated with in-plane contraction but is insensitive to carrier doping, which is consistent with other substitution studies such as Mg1-xA1xB2 and MgB2-xCx. Implication of this work is discussed in terms of the two-dimensional nature of the σ band.

AB - We prepared MgB2-xBex (x = 0, 0.2, 0.3, 0.4, and 0.6) samples where B is substituted with Be. MgB2 structure is maintained up to x = 0.6. In-plane and interplane lattice constants were found to decrease and increase, respectively. The superconducting transition temperature Tc decreases with x. We found that the Tc decrease is correlated with in-plane contraction but is insensitive to carrier doping, which is consistent with other substitution studies such as Mg1-xA1xB2 and MgB2-xCx. Implication of this work is discussed in terms of the two-dimensional nature of the σ band.

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M3 - Article

AN - SCOPUS:0036574956

SN - 0163-1829

VL - 65

SP - 1725031

EP - 1725034

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 17

M1 - 172503

ER -

Structural and superconducting properties of MgB_2-xBe_x

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