Time-Reversal Symmetry Breaking in Re-Based Kagome Lattice Superconductor

Manasi Mandal; A. Kataria; P. K. Meena; R. K. Kushwaha; D. Singh; P. K. Biswas; R. Stewart; A. D. Hillier; R. P. Singh

Time-Reversal Symmetry Breaking in Re-Based Kagome Lattice Superconductor

Superconductivity 2024-09-18 v1

Authors: Manasi Mandal , A. Kataria , P. K. Meena , R. K. Kushwaha , D. Singh , P. K. Biswas , R. Stewart , A. D. Hillier , R. P. Singh

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Abstract

We investigated the Re-based kagome superconductor Re $_2$ Zr through various measurements, including resistivity, magnetization, specific heat, and muon spin rotation and relaxation spectroscopy. These results suggest that Re $_2$ Zr is a moderately coupled potential two-gap superconductor. Zero-field muon relaxation data indicate the possible presence of a time-reversal symmetry-breaking state in the superconducting ground state. Our investigation identifies Re $_{2}$ Zr as a new unconventional superconductor with a potential complex order parameter that warrants considerable experimental and theoretical interest.

Keywords

kagome lattice superconductor time-reversal symmetry breaking two-gap superconductor muon spin relaxation unconventional superconductivity

Cite

@article{arxiv.2409.10941,
  title  = {Time-Reversal Symmetry Breaking in Re-Based Kagome Lattice Superconductor},
  author = {Manasi Mandal and A. Kataria and P. K. Meena and R. K. Kushwaha and D. Singh and P. K. Biswas and R. Stewart and A. D. Hillier and R. P. Singh},
  journal= {arXiv preprint arXiv:2409.10941},
  year   = {2024}
}

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9 pages, 6 figures

Time-Reversal Symmetry Breaking in Re-Based Kagome Lattice Superconductor

Abstract

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