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.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 2012 May 23|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics