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arXiv · 2508.18135

Investigating the Electrical Transport Properties and Electronic Structure of Zr2CuSb3

Eoghan Downey·Soumya S. Bhat·Shane Smolenski·Ruiqi Tang·Carly Mistick·Aaron Bostwick·Chris Jozwiak·Eli Rotenberg·Demet Usanmaz·Na Hyun Jo
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Abstract

The checkerboard lattice has been proposed to host topological flat bands as a result of destructive interference among its various electronic hopping terms. However, it has proven challenging to realize experimentally due to the difficulty of isolating this structure from any significant out-of-plane bonding while maintaining structural integrity. Here, single crystals of Zr2CuSb3, a potential candidate for the checkerboard lattice, were synthesized using the solution (self-flux) method, and their structure was confirmed via X-ray diffraction. Electrical transport measurements indicate metallic behavior with electron-dominated carriers. Angle-resolved photoemission spectroscopy reveals multiple electron pockets and significant kz broadening due to its large c-axis and low dispersion features in k z. Density functional theory calculations further disentangle the contributions from each high-symmetry plane, providing a comprehensive characterization of electronic behavior.

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Eoghan Downey, Soumya S. Bhat, Shane Smolenski, Ruiqi Tang, Carly Mistick, Aaron Bostwick, Chris Jozwiak, Eli Rotenberg, Demet Usanmaz, Na Hyun Jo. 2025-08-25. Investigating the Electrical Transport Properties and Electronic Structure of Zr2CuSb3. https://doi.org/10.1103/qrll-lplv

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