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

Varování

Publikace nespadá pod Pedagogickou 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