Number of the records: 1
Single-crystal studies and electronic structure investigation of the room-temperature semiconductor NaMnAs
- 1.0556998 - FZÚ 2023 RIV US eng J - Journal Article
Volný, J. - Charvátová, K. - Veis, M. - Holý, V. - Vondráček, Martin - Honolka, Jan - Duverger-Nédellec, E. - Schusser, J. - D'Souza, S.W. - Minár, J. - Pientka, J.M. - Marmodoro, Alberto - Výborný, Karel - Uhlířová, K.
Single-crystal studies and electronic structure investigation of the room-temperature semiconductor NaMnAs.
Physical Review B. Roč. 105, č. 12 (2022), č. článku 125204. ISSN 2469-9950. E-ISSN 2469-9969
R&D Projects: GA MŠMT(CZ) EF16_019/0000760; GA ČR(CZ) GX19-28375X; GA ČR(CZ) GA20-18725S; GA MŠMT(CZ) LM2018096
EU Projects: European Commission(XE) 766566 - ASPIN
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Research Infrastructure: e-INFRA CZ - 90140
Institutional support: RVO:68378271
Keywords : antiferromagnetism * crystal growth * crystal structure * density of states * exchange interaction * magnetic anisotropy
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.7, year: 2022
Method of publishing: Limited access
https://doi.org/10.1103/PhysRevB.105.125204
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.
Permanent Link: http://hdl.handle.net/11104/0331203
Number of the records: 1