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

Varování

Publikace nespadá pod Ekonomicko-správní fakultu, ale pod Přírodovědeckou fakultu. Oficiální stránka publikace je na webu muni.cz.

Autoři	VOLNÝ Jiří CHARVÁTOVÁ Kateřina VEIS Martin HOLÝ Václav VONDRÁČEK Martin HONOLKA Jan DUVERGER-NÉDELLEC Elen SCHUSSER Jakub SOUZA Sunil W. MINÁR Jan PIENTKA James M MARMODORO Alberto VÝBORNÝ Karel UHLÍŘOVÁ Klára
Rok publikování	2022
Druh	Článek v odborném periodiku
Časopis / Zdroj	Physical Review B
Fakulta / Pracoviště MU	Přírodovědecká fakulta
Citace
www	https://arxiv.org/pdf/2109.03348.pdf https://doi.org/10.1103/PhysRevB.105.125204
Doi	http://dx.doi.org/10.1103/PhysRevB.105.125204
Klíčová slova	Antiferromagnetism; Crystal growth; Crystal structure; Density of states; Exchange interaction; Magnetic anisotropy; Magnetic semiconductors; Semiconductors
Popis	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 Néel temperature was determined from temperature dependence of susceptibility, in agreement with our Monte Carlo simulations.
Související projekty:	e-Infrastruktura CZ