Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
MA: Fachverband Magnetismus
MA 47: Altermagnets V
MA 47.2: Vortrag
Donnerstag, 12. März 2026, 15:15–15:30, HSZ/0002
Chiral phonon-electron interaction in altermagnets — •Armando Consiglio1, Giancarlo Panaccione1, and Domenico Di Sante1,2 — 1CNR-Istituto Officina dei Materiali (IOM), Unità di Trieste, Strada Statale 14, km 163.5, 34149 Basovizza (TS), Italy — 2Department of Physics and Astronomy, University of Bologna, 40127 Bologna, Italy
The recent discovery of altermagnetism has opened new frontiers in condensed matter physics, bridging the behaviour of collinear antiferromagnets and ferromagnets. Altermagnetic materials exhibit zero net magnetization while hosting spin-split electronic bands, suggesting novel couplings between lattice and electronic degrees of freedom with potential implications for chiral phonon formation and magneto-phononic effects. In this study, we focus on MnTe and CrSb and present two main results. First, we identify signatures of chiral phonons in the presence of altermagnetic order. Second, we analyze the coupling between these chiral phonon modes and the low-energy electronic states of the compounds, revealing new magneto-phononic interactions. The work provides insight into the interplay between spin order and lattice dynamics in altermagnetic materials, highlighting their potential for novel spintronic and phononic functionalities.
Keywords: Altermagnets; Phonons; Electron-phonon interaction; Density functional theory; Chirality