Superconducting properties of R3T4Sn13 (R = La, Sr, Ca, T = Rh, Ir) with a quasi-skutterudite structure

H. Hayamizu; N. Kase; J. Akimitsu

doi:10.1016/j.physc.2009.12.062

Superconducting properties of R₃T₄Sn₁₃ (R = La, Sr, Ca, T = Rh, Ir) with a quasi-skutterudite structure

H. Hayamizu, N. Kase, J. Akimitsu

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

10 Citations (Scopus)

Abstract

We measured the superconducting and normal state by using the single crystals of R₃T₄Sn₁₃ (R = La, Sr, Ca, T = Rh, Ir). The compounds crystallize in a Yb₃T₄Sn ₁₃-type structure with a cubic space group of Pm3-n (No. 223). Superconducting state of R₃T₄Sn₁₃ 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)	S541-S542
Journal	Physica C: Superconductivity and its applications
Volume	470
Issue number	SUPPL.1
DOIs	https://doi.org/10.1016/j.physc.2009.12.062
Publication status	Published - Dec 2010
Externally published	Yes

Keywords

Superconducting parameters
Superconductivity

ASJC Scopus subject areas

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

Access to Document

10.1016/j.physc.2009.12.062

Cite this

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title = "Superconducting properties of R3T4Sn13 (R = La, Sr, Ca, T = Rh, Ir) with a quasi-skutterudite structure",

abstract = "We measured the superconducting and normal state by using the single crystals of R3T4Sn13 (R = La, Sr, Ca, T = Rh, Ir). The compounds crystallize in a Yb3T4Sn 13-type structure with a cubic space group of Pm3-n (No. 223). Superconducting state of R3T4Sn13 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.",

keywords = "Superconducting parameters, Superconductivity",

author = "H. Hayamizu and N. Kase and J. Akimitsu",

note = "Funding Information: This work was partially supported by a Grant-in-Aid for Scientific Research on Priority Areas from the Ministry of Education, Culture, Sports , Science and Technology of Japan.",

year = "2010",

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T1 - Superconducting properties of R3T4Sn13 (R = La, Sr, Ca, T = Rh, Ir) with a quasi-skutterudite structure

AU - Hayamizu, H.

AU - Kase, N.

AU - Akimitsu, J.

N1 - Funding Information: This work was partially supported by a Grant-in-Aid for Scientific Research on Priority Areas from the Ministry of Education, Culture, Sports , Science and Technology of Japan.

PY - 2010/12

Y1 - 2010/12

N2 - We measured the superconducting and normal state by using the single crystals of R3T4Sn13 (R = La, Sr, Ca, T = Rh, Ir). The compounds crystallize in a Yb3T4Sn 13-type structure with a cubic space group of Pm3-n (No. 223). Superconducting state of R3T4Sn13 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.

AB - We measured the superconducting and normal state by using the single crystals of R3T4Sn13 (R = La, Sr, Ca, T = Rh, Ir). The compounds crystallize in a Yb3T4Sn 13-type structure with a cubic space group of Pm3-n (No. 223). Superconducting state of R3T4Sn13 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.

KW - Superconducting parameters

KW - Superconductivity

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