Two-band superconductivity featuring different anisotropies in the ternary iron silicide Lu2Fe3Si5

被引：19

作者：

Nakajima, Yasuyuki ^{[1
,2
]}

Hidaka, Hikaru ^{[1
]}

Nakagawa, Tsuyoshi ^{[1
]}

Tamegai, Tsuyoshi ^{[1
,2
]}

Nishizaki, Terukazu ^{[3
]}

Sasaki, Takahiko ^{[3
]}

Kobayashi, Norio ^{[3
]}

机构：

[1] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan

[2] JST TRIP, Bunkyo Ku, Tokyo 1138656, Japan

[3] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 17期

关键词：

UPPER CRITICAL-FIELD; TEMPERATURE;

D O I：

10.1103/PhysRevB.85.174524

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report detailed studies of the upper critical field and low-temperature specific heat in the two-gap superconductor Lu2Fe3Si5. The anisotropy of the upper critical field suggests that the active band is quasi-one-dimensional. Low-temperature specific heat in magnetic fields reveals that the virtual H-c2 in the passive band is almost isotropic. These results strongly indicate that the two bands have two different anisotropies, similar to the typical two-gap superconductor MgB2, and their interplay may be essential to the two-gap superconductivity in Lu2Fe3Si5.

引用

页数：5

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