Nodeless superconductivity in noncentrosymmetric LaRhSn

Z. Y. Nie; J. W. Shu; A. Wang; H. Su; W. Y. Duan; A. D. Hillier; D. T. Adroja; P. K. Biswas; T. Takabatake; M. Smidman; H. Q. Yuan

doi:10.1103/PhysRevB.105.134523

Nodeless superconductivity in noncentrosymmetric LaRhSn

Z. Y. Nie
, J. W. Shu
, A. Wang
, H. Su
, W. Y. Duan
, A. D. Hillier
, D. T. Adroja
, P. K. Biswas
, T. Takabatake
, M. Smidman
, H. Q. Yuan

Physics

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

8 Citations (Scopus)

Abstract

The superconducting order parameter of the noncentrosymmetric superconductor LaRhSn is investigated by means of low-temperature measurements of the specific heat, muon-spin relaxation/rotation (μSR), and the tunnel-diode oscillator (TDO)-based method. The specific heat and magnetic penetration depth [λ(T)] show an exponentially activated temperature dependence, demonstrating fully gapped superconductivity in LaRhSn. The temperature dependences of λ-2(T) deduced from the TDO-based method and μSR show nearly identical behavior, which can be well described by a single-gap s-wave model, with a zero-temperature gap value of Δ(0)=1.77(4)kBTc. The zero-field μSR spectra do not show detectable changes upon cooling below Tc, and therefore there is no evidence for time-reversal-symmetry breaking in the superconducting state.

Original language	English
Article number	134523
Journal	Physical Review B
Volume	105
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevB.105.134523
Publication status	Published - 1 Apr 2022

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.105.134523

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title = "Nodeless superconductivity in noncentrosymmetric LaRhSn",

abstract = "The superconducting order parameter of the noncentrosymmetric superconductor LaRhSn is investigated by means of low-temperature measurements of the specific heat, muon-spin relaxation/rotation (μSR), and the tunnel-diode oscillator (TDO)-based method. The specific heat and magnetic penetration depth [λ(T)] show an exponentially activated temperature dependence, demonstrating fully gapped superconductivity in LaRhSn. The temperature dependences of λ-2(T) deduced from the TDO-based method and μSR show nearly identical behavior, which can be well described by a single-gap s-wave model, with a zero-temperature gap value of Δ(0)=1.77(4)kBTc. The zero-field μSR spectra do not show detectable changes upon cooling below Tc, and therefore there is no evidence for time-reversal-symmetry breaking in the superconducting state.",

author = "Nie, \{Z. Y.\} and Shu, \{J. W.\} and A. Wang and H. Su and Duan, \{W. Y.\} and Hillier, \{A. D.\} and Adroja, \{D. T.\} and Biswas, \{P. K.\} and T. Takabatake and M. Smidman and Yuan, \{H. Q.\}",

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doi = "10.1103/PhysRevB.105.134523",

language = "English",

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T1 - Nodeless superconductivity in noncentrosymmetric LaRhSn

AU - Nie, Z. Y.

AU - Shu, J. W.

AU - Wang, A.

AU - Su, H.

AU - Duan, W. Y.

AU - Hillier, A. D.

AU - Adroja, D. T.

AU - Biswas, P. K.

AU - Takabatake, T.

AU - Smidman, M.

AU - Yuan, H. Q.

PY - 2022/4/1

Y1 - 2022/4/1

N2 - The superconducting order parameter of the noncentrosymmetric superconductor LaRhSn is investigated by means of low-temperature measurements of the specific heat, muon-spin relaxation/rotation (μSR), and the tunnel-diode oscillator (TDO)-based method. The specific heat and magnetic penetration depth [λ(T)] show an exponentially activated temperature dependence, demonstrating fully gapped superconductivity in LaRhSn. The temperature dependences of λ-2(T) deduced from the TDO-based method and μSR show nearly identical behavior, which can be well described by a single-gap s-wave model, with a zero-temperature gap value of Δ(0)=1.77(4)kBTc. The zero-field μSR spectra do not show detectable changes upon cooling below Tc, and therefore there is no evidence for time-reversal-symmetry breaking in the superconducting state.

AB - The superconducting order parameter of the noncentrosymmetric superconductor LaRhSn is investigated by means of low-temperature measurements of the specific heat, muon-spin relaxation/rotation (μSR), and the tunnel-diode oscillator (TDO)-based method. The specific heat and magnetic penetration depth [λ(T)] show an exponentially activated temperature dependence, demonstrating fully gapped superconductivity in LaRhSn. The temperature dependences of λ-2(T) deduced from the TDO-based method and μSR show nearly identical behavior, which can be well described by a single-gap s-wave model, with a zero-temperature gap value of Δ(0)=1.77(4)kBTc. The zero-field μSR spectra do not show detectable changes upon cooling below Tc, and therefore there is no evidence for time-reversal-symmetry breaking in the superconducting state.

UR - https://www.scopus.com/pages/publications/85129240248

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DO - 10.1103/PhysRevB.105.134523

M3 - Article

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VL - 105

JO - Physical Review B

JF - Physical Review B

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M1 - 134523

ER -

Nodeless superconductivity in noncentrosymmetric LaRhSn

Abstract

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