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arXiv · 2512.09314

Bulk superconductivity in the kagome metal YRu3B2

Tobi Gaggl·Ryo Misawa·Markus Kriener·Yuki Tanaka·Rinsuke Yamada·Max Hirschberger
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Abstract

Materials with a kagome sublattice have been heavily studied recently for their exotic electronic band structure, structural frustration, high-temperature charge order transitions, and unconventional electron-phonon coupling. In LaRu3Si2, it was proposed that electronic flat bands conspire with the characteristic phonon spectrum of the kagome lattice to drive enhanced superconductivity at Tc = 7 K. Here, we report bulk superconductivity in the structural analogue YRu3B2, which hosts a structurally pristine kagome lattice. We observe a superconducting transition at Tc = 0.7 K through magnetization, resistivity, and heat-capacity measurements in this novel kagome metal.

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Tobi Gaggl, Ryo Misawa, Markus Kriener, Yuki Tanaka, Rinsuke Yamada, Max Hirschberger. 2025-12-10. Bulk superconductivity in the kagome metal YRu3B2. https://doi.org/10.1088/1402-4896/ae3c65

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