Single-crystal studies and electronic structure investigation of the room-temperature semiconductor NaMnAs

Article

关键词: X-RAY PHOTOEMISSION;    TERNARY COMPOUNDS;    SPECTRA;    MANGANESE;    ELEMENTS;    SODIUM;   

DOI  :  10.1103/PhysRevB.105.125204

来源: SCIE

【 摘 要 】

Synthesis of single-crystalline NaMnAs is reported, and we confirm its high quality by x-ray photoemission spectra. Magnetometry results are consistent with previous findings of antiferromagnetic order. The electronic structure was further studied using optical transmittance and by theoretical modeling using local-density approximation (LDA) extended to LDA + U for the purpose of determining the Heisenberg model parameters. Optical transmittance measurements confirm theoretical predictions that NaMnAs is a semiconductor. The Neel temperature was determined from temperature dependence of susceptibility, in agreement with our Monte Carlo simulations.

【 授权许可】

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