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Article overview
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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
; | Date: |
4 Jan 2023 | 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 ($mu$SR) and the tunnel-diode oscillator
(TDO) based method. The specific heat and magnetic penetration depth
[$lambda(T)$] show an exponentially activated temperature dependence,
demonstrating fully gapped superconductivity in LaRhSn. The temperature
dependence of $lambda^{-2}(T)$ deduced from the TDO based method and $mu$SR
show nearly identical behavior, which can be well described by a single-gap
$s$-wave model, with a zero temperature gap value of $Delta(0)=1.77(4)k_BT_c$.
The zero-field $mu$SR spectra do not show detectable changes upon cooling
below $T_c$, and therefore there is no evidence for time-reversal-symmetry
breaking in the superconducting state. | Source: | arXiv, 2301.01467 | Services: | Forum | Review | PDF | Favorites |
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