Magnetic and Electronic Properties of Single-Crystalline BaCoSO
Yuanhe Song, Xianshi Liu, Dong Wu, Qi Yao, Chenhaoping Wen, Maxim, Avdeev, Rui Peng, Haichao Xu, Jin Miao, Xia Lou, Yifei Fang, Binglin Pan,, Nanlin Wang, Darren C. Peets, Donglai Feng
TL;DR
This study synthesizes single crystals of BaCoSO, revealing its magnetic properties and band gap, and provides insights that could facilitate the exploration of its potential high-temperature superconductivity.
Contribution
The paper reports the successful synthesis and detailed characterization of single-crystalline BaCoSO, a Co-based antiferromagnetic insulator, providing foundational data for future superconductivity research.
Findings
BaCoSO is an antiferromagnetic insulator with a 1.3 eV band gap.
Magnetic anisotropy and order were characterized through neutron diffraction.
The results support potential for superconductivity in doped BaCoSO.
Abstract
Doped BaCoSO was recently predicted to be a high-temperature superconductor in a new class based on Co and Ni. Using a Co-S self flux method, we synthesized single crystals of the antiferromagnetic insulator BaCoSO. Our magnetic and specific heat measurements and neutron diffraction provide details of its magnetic anisotropy and order. Its band gap was determined to be about 1.3 eV by our measurements of its photoemission spectrum and infrared optical conductivity. Our results can pave the way to exploring the predicted superconductivity in this Co-based material.
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