Two-band superconductivity featuring different anisotropies in the ternary iron silicide Lu 2Fe 3Si 5

Yasuyuki Nakajima, Hikaru Hidaka, Tsuyoshi Nakagawa, Tsuyoshi Tamegai, Terukazu Nishizaki, Takahiko Sasaki, Norio Kobayashi

研究成果: Article査読

15 被引用数 (Scopus)

抄録

We report detailed studies of the upper critical field and low-temperature specific heat in the two-gap superconductor Lu 2Fe 3Si 5. 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 MgB 2, and their interplay may be essential to the two-gap superconductivity in Lu 2Fe 3Si 5.

本文言語English
論文番号174524
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
85
17
DOI
出版ステータスPublished - 2012 5 23

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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