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MA: Fachverband Magnetismus

MA 8: Altermagnets II

MA 8.12: Vortrag

Montag, 9. März 2026, 18:00–18:15, HSZ/0002

Influencing altermagnetic transitions by strain and layering — •Marnin Di Nunzio, Frank Lechermann, and Ilya Eremin — Institut für Theoretische Physik III, Ruhr-Universität Bochum, D-44780 Bochum, Germany

Altermagnets are collinearly ordered magnets, that break time-reversal symmetry, with a zero magnetization, and a spin-split band structure. By employing the minimal tight-binding Hubbard-like model within mean-field and rotationally invariant slave boson (RISB) approximation we explore the effect of uniaxial strain and electronic correlations on altermagnetism in mono- and bilayer systems. We single out two configurations of bilayer stackings and examine the altermagnetic transition and the effect of doping respectively. Following the application of uniaxial strain and doping in the monolayer, we uncover a fully spin-polarized Fermi surface. In the bilayer system doping itself is sufficient to achieve a complete metallic spin-polarization.

Keywords: Altermagnets; Strain; Bilayer