Pressure dependence of the superconducting transition temperature of magnesium diboride

被引：127

作者：

Monteverde, M

Núñez-Regueiro, M

Rogado, N

Regan, KA

Hayward, MA

He, T

Loureiro, SM

Cava, RJ

机构：

[1] CNRS, Ctr Rech Tres Basses Temp, F-38042 Grenoble 09, France

[2] Princeton Univ, Dept Chem, Princeton, NJ 08544 USA

[3] Princeton Univ, Mat Inst, Princeton, NJ 08544 USA

来源：

SCIENCE | 2001年 / 292卷 / 5514期

关键词：

D O I：

10.1126/science.1059775

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We studied the pressure and temperature dependence of the electrical resistivity of the superconducting compound magnesium diboride (MgB2). 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 MgB2.

引用

页码：75 / 77

页数：3

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