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High-Throughput Screening of Spin Hall Conductivity in Two-dimensional Materials
Fu Li1, Xiaoxiong Liu2, Vikrant Chaudhary3
1Institute of Materials Science, Technology University of Darmstadt, 64287, Darmstadt, Germany.
None:
Two-dimensional (2D) materials with a large spin Hall effect (SHE) have attracted significant attention due to their potential applications in next-generation spintronic devices. In this work, we perform high-throughput (HTP) calculations to obtain spin Hall conductivity (SHC) of 4486 nonmagnetic compounds in the 2Dmatpedia database and identify 6 materials with SHC exceeding 7.0 e/4π, surpassing those of the known materials. Detailed analysis reveals that the significant SHC can be attributed to spin-orbit coupling (SOC)-induced gap openings at Dirac-like band crossings. Additionally, the presence of mirror symmetry can also enhance the SHC. Beyond the high SHC materials, 57 topological insulators with quantized SHCs have been identified. Our work enables rapid screening and paves the way for experimental validation, potentially accelerating the discovery of novel 2D materials optimized for spintronics applications.
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