Superconducting and Martensitic Transitions of V3Si and Nb3Sn under High Pressure

被引：5

作者：

Tanaka, Shigeki ^{[1
]}

Handoko ^{[1
]}

Miyake, Atsushi ^{[1
]}

Kagayama, Tomoko ^{[1
]}

Shimizu, Katsuya ^{[1
]}

Boehmer, Anna. E. ^{[2
]}

Burger, Philipp ^{[2
]}

Hardy, Frederic ^{[2
]}

Meingast, Christoph ^{[2
]}

Tsutsumi, Hiroki ^{[3
]}

Onuki, Yoshichika ^{[3
]}

机构：

[1] Osaka Univ, KYOKUGEN, Toyonaka, Osaka 5608531, Japan

[2] Forschungszentrum Karlsruhe, Inst Festkorperphys, D-76021 Karlsruhe, Germany

[3] Osaka Univ, Grad Sch Sci, Toyonaka, Osaka 5608531, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2012年 / 81卷

关键词：

V3Si; Nb3Sn; A15-compounds; superconductivity; martensitic transition; pressure effect;

D O I：

10.1143/JPSJS.81SB.SB026

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Electrical resistivity and specific heat measurements have been performed under high pressure to reveal the interplay between the martensitic transition and the superconductivity of V3Si and Nb3Sn. For V3Si, superconducting transition temperature T-c increases with increasing pressure up to 4 GPa, where the martensitic transition temperature T-M merges with T-c. T-c is insensitive to the pressure between 4 GPa and 9 GPa, and is suppressed on further compression accompanied with a decrease of the electrical resisitivity at T-c and an increase of the superconducting transition width. The similar tendency is also observed in Nb3Sn. The martensitic transition seems to play an important role in superconductivity.

引用

页数：5

共 14 条

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