Superconducting state in YSn3 with a AuCu3-type structure

K. Kawashima, M. Maruyama, M. Fukuma, Jun Akimitsu

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

In this paper, the superconducting properties of YSn3 are reported. YSn3 has a cubic AuCu3 -type structure with the space group Pm 3̄ m. Magnetic susceptibility, electrical resistivity, and specific-heat data showed that YSn3 is a superconductor with a superconducting transition temperature (Tc) of 7 K. The magnetization versus magnetic field (M-H) curve shows the typical type-II superconducting behavior. The estimated lower critical field Hc1 (0) and the upper critical field Hc2 (0) are about 90 Oe and 3000 Oe, respectively. The penetration depth λ (0) and coherence length ξ (0) are calculated to be approximately 270 nm and 66 nm, respectively, using the Ginzburg-Landau equations. The estimated Sommerfeld coefficient γN is 7.57mJ/mol K2. The normalized specific heat jump ΔC/ γN Tc is estimated to be about 2.19, which is higher than the value predicted by the BCS theory in the weak-coupling limit, i.e., ΔC/ γN Tc =1.43. This fact indicates that superconductivity in YSn3 exists in the strong-coupling regime. The difference between Tc of Ln X3 (X=family of 13 or 14 elements) compounds is discussed to compare their physical properties.

Original languageEnglish
Article number094517
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume82
Issue number9
DOIs
Publication statusPublished - Sep 23 2010
Externally publishedYes

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Specific heat
specific heat
BCS theory
Landau-Ginzburg equations
Superconductivity
Magnetic susceptibility
Superconducting materials
Superconducting transition temperature
Magnetization
superconductivity
penetration
Physical properties
physical properties
transition temperature
Magnetic fields
magnetic permeability
magnetization
electrical resistivity
curves
coefficients

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Superconducting state in YSn3 with a AuCu3-type structure. / Kawashima, K.; Maruyama, M.; Fukuma, M.; Akimitsu, Jun.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 82, No. 9, 094517, 23.09.2010.

Research output: Contribution to journalArticle

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