Pressure Dependence of the Superconducting Transition Temperature of Magnesium Diboride-Reference-Cited by-同舟云学术

Pressure Dependence of the Superconducting Transition Temperature of Magnesium Diboride

Published:2001-04-06 Issue:5514 Volume:292 Page:75-77
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Monteverde M.¹,Núñez-Regueiro M.¹,Rogado N.²,Regan K. A.²,Hayward M. A.²,He T.²,Loureiro S. M.²,Cava R. J.²

Affiliation:

1. Centre de Recherches sur les Très Basses Températures, CNRS, BP166 Cedex 09, 38042 Grenoble, France.

2. Department of Chemistry and Materials Institute, Princeton University, Princeton, NJ 08544, USA.

Abstract

We studied the pressure and temperature dependence of the electrical resistivity of the superconducting compound magnesium diboride (MgB 2 ). The superconducting transition temperature decreases monotonically with pressure, being parabolic or linear, depending on samples. The rate of decrease under pressure is higher than in conventional superconductors. We discuss our results in terms of the semimetallic character of the electronic band structure of MgB 2 .

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference23 articles.

1. Transition Temperature of Strong-Coupled Superconductors

2. V. L. Ginzburg D. A. Kirzhnits Eds. High Temperature Superconductivity (Consultants Bureau New York 1982).

3. Sources of Quantum Protection in High- T c Superconductivity

4. J. H. Schön Ch. Kloc

5. Superconductivity at 52 K in hole-doped C60

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