Wurtzite <i>vs</i>. rock-salt MnSe epitaxy: electronic and altermagnetic properties
M. J. Grzybowski, Carmine Autieri, J. Z. Domagała, Cezary Krasucki, Anna Kaleta, S. Kret, Katarzyna Gas, M. Sawicki, R. Bożek, J. Suffczyński, W. Pacuski
Abstract
calculations that semiconductive MnSe exhibits altermagnetic spin-splitting in the wurtzite phase as well as a critical temperature well above room temperature. It is the first material from such a space group identified to possess altermagnetic properties. Furthermore, we demonstrate experimentally through structural characterization techniques that it is possible to obtain thin films of both the intriguing wurtzite phase of MnSe and more common rock-salt MnSe using molecular beam epitaxy on GaAs substrates. The choice of buffer layers plays a crucial role in determining the resulting phase and consequently extends the array of materials available for the physics of altermagnetism.