$\mu$SR study on noncentrosymmetric superconductor NbGe$_{\mathbf{2}}$

J. C. Jiao; K. W. Chen; A. D. Hillier; T. U. Ito; W. Higemoto; Z. Li; B. J. Lv; Z. -A. Xu; L. Shu

$\mu$SR study on noncentrosymmetric superconductor NbGe$_{\mathbf{2}}$

Superconductivity 2024-12-13 v1

Authors: J. C. Jiao , K. W. Chen , A. D. Hillier , T. U. Ito , W. Higemoto , Z. Li , B. J. Lv , Z. -A. Xu , L. Shu

Abstract

We report a muon spin relaxation ( $\mu$ SR) study on polycrystalline noncentrosymmetric superconductor NbGe $_2$ ~with the superconducting transition temperature $T_c=2.0\sim2.1$ ~K. Zero-field $\mu$ SR~experiment indicates the absence of spontaneous magnetic field in the superconducting state, showing the preservation of time-reversal symmetry in the superconducting state. Transverse-field $\mu$ SR~experiment is performed to map the phase diagram of NbGe $_2$ , from which clear evidence of both type-I and type-II superconductivity is obtained. More importantly, we clearly delineate the region in the phase diagram where type-I and type-II superconductivity coexist.

Keywords

unconventional superconductivity superconductivity magnetic materials and spin systems

Cite

@article{arxiv.2412.08994,
  title  = {$\mu$SR study on noncentrosymmetric superconductor NbGe$_{\mathbf{2}}$},
  author = {J. C. Jiao and K. W. Chen and A. D. Hillier and T. U. Ito and W. Higemoto and Z. Li and B. J. Lv and Z. -A. Xu and L. Shu},
  journal= {arXiv preprint arXiv:2412.08994},
  year   = {2024}
}

Comments

Accepted by Physical. Rev. B

$\mu$SR study on noncentrosymmetric superconductor NbGe$_{\mathbf{2}}$

Abstract

Keywords

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