Single crystal studies and electronic structure investigation of a room-temperature semiconductor NaMnAs
arXiv:2109.03348 · doi:10.1103/PhysRevB.105.125204
Abstract
We report synthesis of single crystalline NaMnAs, confirm its antiferromagnetic order and characterise the sample by photoemission spectroscopy. The electronic structure was studied using optical transmittance, x-ray and ultraviolet spectroscopy and by theoretical modeling using local density approximation (LDA) extended to LDA+U when Heisenberg model parameters were determined. Optical transmittance measurement have confirmed the theoretical predictions that NaMnAs is a semiconductor. Also the Néel temperature was closer determined for the first time from temperature dependence of magnetization, in agreement with our Monte Carlo simulations.
11 pages, 11 figures
References in corpus (5)
- Imaging current-induced switching of antiferromagnetic domains in CuMnAs
- On the Hohenberg-Mermin-Wagner theorem and its limitations
- Prospect for antiferromagnetic spintronics
- Magnonics: Spin Waves Connecting Charges, Spins and Photons
- Physical properties of the tetragonal CuMnAs: a first-principles study