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

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number174524
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume85
Issue number17
DOIs
Publication statusPublished - 2012 May 23

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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