TY - JOUR
T1 - Two-band superconductivity featuring different anisotropies in the ternary iron silicide Lu 2Fe 3Si 5
AU - Nakajima, Yasuyuki
AU - Hidaka, Hikaru
AU - Nakagawa, Tsuyoshi
AU - Tamegai, Tsuyoshi
AU - Nishizaki, Terukazu
AU - Sasaki, Takahiko
AU - Kobayashi, Norio
N1 - Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.
PY - 2012/5/23
Y1 - 2012/5/23
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevB.85.174524
DO - 10.1103/PhysRevB.85.174524
M3 - Article
AN - SCOPUS:84861685383
VL - 85
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 0163-1829
IS - 17
M1 - 174524
ER -