YRu 3 B 2 —a kagome lattice superconductor
Source abstract
Abstract
Abstract We report the synthesis and physical properties of a hexagonal boride YRu 3 B 2 , which was previously predicted to show superconductivity [N.K. Nepal, L.-L. Wang, arXiv:2409.18441 (2024)]. A polycrystalline sample was synthesized by arc-melting a pre-reacted YB 2 and metallic Ru. Phase and elemental composition were characterized by means of powder x-ray diffraction and scanning electron microcopy. Our resistivity and heat capacity measurements indicate that YRu 3 B 2 is a weakly coupled superconductor, with a critical temperature T c = 0.63 K and an upper critical field {μ}0{H}c2(0)=0.11 T. Isovalent substitution of Y with 5 at% and 10 at% of Sc resulted in a slight enhancement of the critical temperature up to ca. 0.8 K. 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.
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Research context
OpenAlex topics: Rare-earth and actinide compounds · Topological Materials and Phenomena · Advanced Condensed Matter Physics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Gdansk University of Technology
Advanced Materials Center, Gdansk University of Technology
The Scientific and Technological Research Council of Turkey
Princeton University
Funding
Politechnika Gdańska · US Department of Energy
References (35)
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