Deriving spin models from density functional theory: challenges and limitations

Donya Mazhjoo; Gustav Bihlmayer; Stefan Blügel

doi:10.1117/12.2567655

2 September 2020 Exchange interactions in two-dimensional materials of MnBi₂Te₄-type

Donya Mazhjoo, Gustav Bihlmayer, Stefan Blügel

Proceedings Volume 11470, Spintronics XIII; 114702S (2020) https://doi.org/10.1117/12.2567655
Event: SPIE Nanoscience + Engineering, 2020, Online Only

Abstract

Septuple layers of MnBi₂Te₄ type are important building blocks of magnetic topological insulators and semimetals but also examples of two-dimensional magnetic materials with critical temperatures up to a few tens of Kelvin. Using density functional theory (DFT) we study the exchange interactions in MnBi₂Te₄, MnBi₂Se₄, and MnSb₂Te₄ films to highlight the importance of higher-order terms and the contributions of relativistic anisotropic interactions. We also discuss the possibility to induce Dzyaloshinskii-Moriya interaction by gating with an external electric field.

Conference Presentation

Citation Download Citation

Donya Mazhjoo, Gustav Bihlmayer, and Stefan Blügel "Exchange interactions in two-dimensional materials of MnBi₂Te₄-type", Proc. SPIE 11470, Spintronics XIII, 114702S (2 September 2020); https://doi.org/10.1117/12.2567655

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