Superconducting state in the ternary stannide R3Co 4Sn13 (R = Ca, La)

N. Kase; H. Hayamizu; K. Inoue; J. Akimitsu

doi:10.1016/j.physc.2011.05.034

Superconducting state in the ternary stannide R₃Co ₄Sn₁₃ (R = Ca, La)

N. Kase, H. Hayamizu, K. Inoue, J. Akimitsu

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

We observed the superconducting and normal state by using the single crystals of R₃ Co₄Sn₁₃ (R = Ca, La). The compounds crystallized in a Yb₃Rh₄Sn₁₃-type structure with a cubic space group of Pm3̄n (No. 223). Superconducting state of R₃Co₄Sn₁₃ was investigated by magnetic susceptibility, electrical resistivity, and specific heat measurements. From the electrical resistivity measurements under several magnetic fields, the upper critical field H_c2(0) was estimated. From the results, we discovered that the H_c2(T) curves cannot be described as the Wertharmer-Helfand-Hohenberg (WHH) prediction. Specific heat measurements indicated that these compounds were typical BCS superconductors, and categorized as strong-coupling superconductors.

Original language	English
Pages (from-to)	711-713
Number of pages	3
Journal	Physica C: Superconductivity and its applications
Volume	471
Issue number	21-22
DOIs	https://doi.org/10.1016/j.physc.2011.05.034
Publication status	Published - Nov 1 2011
Externally published	Yes

Keywords

Specific heat
Superconductivity
Transport properties

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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abstract = "We observed the superconducting and normal state by using the single crystals of R3 Co4Sn13 (R = Ca, La). The compounds crystallized in a Yb3Rh4Sn13-type structure with a cubic space group of Pm{\=3}n (No. 223). Superconducting state of R3Co4Sn13 was investigated by magnetic susceptibility, electrical resistivity, and specific heat measurements. From the electrical resistivity measurements under several magnetic fields, the upper critical field Hc2(0) was estimated. From the results, we discovered that the Hc2(T) curves cannot be described as the Wertharmer-Helfand-Hohenberg (WHH) prediction. Specific heat measurements indicated that these compounds were typical BCS superconductors, and categorized as strong-coupling superconductors.",

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AU - Kase, N.

AU - Hayamizu, H.

AU - Inoue, K.

AU - Akimitsu, J.

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N2 - We observed the superconducting and normal state by using the single crystals of R3 Co4Sn13 (R = Ca, La). The compounds crystallized in a Yb3Rh4Sn13-type structure with a cubic space group of Pm3̄n (No. 223). Superconducting state of R3Co4Sn13 was investigated by magnetic susceptibility, electrical resistivity, and specific heat measurements. From the electrical resistivity measurements under several magnetic fields, the upper critical field Hc2(0) was estimated. From the results, we discovered that the Hc2(T) curves cannot be described as the Wertharmer-Helfand-Hohenberg (WHH) prediction. Specific heat measurements indicated that these compounds were typical BCS superconductors, and categorized as strong-coupling superconductors.

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