Superconductivity in the Rh-based Heusler family MRh2Sn

T. Klimczuk; K. Gofryk; C. H. Wang; J. M. Allred; F. Ronning; W. Sadowski; J. C. Griveau; E. Colineau; D. Safarik; J. D. Thompson; R. J. Cava

doi:10.1103/PhysRevB.82.134520

Superconductivity in the Rh-based Heusler family MRh₂Sn

T. Klimczuk, K. Gofryk, C. H. Wang, J. M. Allred, F. Ronning, W. Sadowski, J. C. Griveau, E. Colineau, D. Safarik, J. D. Thompson, R. J. Cava

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Abstract

Superconductivity and structural characterization is reported for the Heusler structure compounds ScRh₂Sn, LuRh₂Sn, and YRh ₂Sn. The superconducting Tc 's are 2.0 K, 2.9 K, and 4.1 K, respectively. The electronic contributions to the specific heat and the Debye temperatures are reported, and suggest that the observed trend in Tc is governed primarily by an increase in electron-phonon coupling on going from ScRh ₂Sn to YRh₂Sn. The electron-phonon coupling constant λep and the normalized specific-heat jump ΔC/γ Tc suggest that the MRh₂ Sn system evolves from weak coupling to moderate coupling superconductivity.

Original language	English (US)
Article number	134520
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	82
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.82.134520
State	Published - Oct 14 2010

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.82.134520

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title = "Superconductivity in the Rh-based Heusler family MRh2Sn",

abstract = "Superconductivity and structural characterization is reported for the Heusler structure compounds ScRh2Sn, LuRh2Sn, and YRh 2Sn. The superconducting Tc 's are 2.0 K, 2.9 K, and 4.1 K, respectively. The electronic contributions to the specific heat and the Debye temperatures are reported, and suggest that the observed trend in Tc is governed primarily by an increase in electron-phonon coupling on going from ScRh 2Sn to YRh2Sn. The electron-phonon coupling constant λep and the normalized specific-heat jump ΔC/γ Tc suggest that the MRh2 Sn system evolves from weak coupling to moderate coupling superconductivity.",

author = "T. Klimczuk and K. Gofryk and Wang, {C. H.} and Allred, {J. M.} and F. Ronning and W. Sadowski and Griveau, {J. C.} and E. Colineau and D. Safarik and Thompson, {J. D.} and Cava, {R. J.}",

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language = "English (US)",

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T1 - Superconductivity in the Rh-based Heusler family MRh2Sn

AU - Klimczuk, T.

AU - Gofryk, K.

AU - Wang, C. H.

AU - Allred, J. M.

AU - Ronning, F.

AU - Sadowski, W.

AU - Griveau, J. C.

AU - Colineau, E.

AU - Safarik, D.

AU - Thompson, J. D.

AU - Cava, R. J.

PY - 2010/10/14

Y1 - 2010/10/14

N2 - Superconductivity and structural characterization is reported for the Heusler structure compounds ScRh2Sn, LuRh2Sn, and YRh 2Sn. The superconducting Tc 's are 2.0 K, 2.9 K, and 4.1 K, respectively. The electronic contributions to the specific heat and the Debye temperatures are reported, and suggest that the observed trend in Tc is governed primarily by an increase in electron-phonon coupling on going from ScRh 2Sn to YRh2Sn. The electron-phonon coupling constant λep and the normalized specific-heat jump ΔC/γ Tc suggest that the MRh2 Sn system evolves from weak coupling to moderate coupling superconductivity.

AB - Superconductivity and structural characterization is reported for the Heusler structure compounds ScRh2Sn, LuRh2Sn, and YRh 2Sn. The superconducting Tc 's are 2.0 K, 2.9 K, and 4.1 K, respectively. The electronic contributions to the specific heat and the Debye temperatures are reported, and suggest that the observed trend in Tc is governed primarily by an increase in electron-phonon coupling on going from ScRh 2Sn to YRh2Sn. The electron-phonon coupling constant λep and the normalized specific-heat jump ΔC/γ Tc suggest that the MRh2 Sn system evolves from weak coupling to moderate coupling superconductivity.

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JF - Physical Review B - Condensed Matter and Materials Physics

IS - 13

M1 - 134520

ER -

Superconductivity in the Rh-based Heusler family MRh₂Sn

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