Two-band superconductivity featuring different anisotropies in the ternary iron silicide Lu2Fe3Si5
Yasuyuki Nakajima, Hikaru Hidaka, Tsuyoshi Nakagawa, Tsuyoshi Tamegai, Terukazu Nishizaki, Takahiko Sasaki, Norio Kobayashi
DOI 10.1103/PhysRevB.85.174524 · Physical Review B
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Abstract
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 Hc2 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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Lu2Fe3Si5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6 | Pressure not reported | unknown |
| Lu2Fe3Si5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5.8 | Pressure not reported | midpoint |
| Lu2Fe3Si5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 5.8 | Pressure not reported | unknown |
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