YRu$_3$B$_2$ -- a kagome lattice superconductor

Michał J. Winiarski; Dominik Walczak; Szymon Królak; Duygu Yazici; Robert J. Cava; Tomasz Klimczuk

YRu$_3$B$_2$ -- a kagome lattice superconductor

Superconductivity 2025-12-10 v1 Materials Science

Authors: Michał J. Winiarski , Dominik Walczak , Szymon Królak , Duygu Yazici , Robert J. Cava , Tomasz Klimczuk

Abstract

We report the synthesis and physical properties of a polycrystalline, hexagonal boride YRu $_3$ B $_2$ . Our resistivity and heat capacity measurements indicate that YRu $_3$ B $_2$ is a weakly coupled superconductor, with critical temperature $T_c$ = 0.63 K and upper critical field $\mu_0 H_{c2}$ (0)=0.11 T. Density functional theory calculations, together with chemical-bonding analysis, reveal that the electronic states at and near the Fermi energy level are dominated by the Ru kagome sublattice.

Keywords

superconductor kagome lattice YRu$_3$B$_2$ critical temperature electronic structure

Cite

@article{arxiv.2512.08514,
  title  = {YRu$_3$B$_2$ -- a kagome lattice superconductor},
  author = {Michał J. Winiarski and Dominik Walczak and Szymon Królak and Duygu Yazici and Robert J. Cava and Tomasz Klimczuk},
  journal= {arXiv preprint arXiv:2512.08514},
  year   = {2025}
}

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