Berlin 2024 – scientific programme
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MA: Fachverband Magnetismus
MA 52: Altermagnets
MA 52.12: Talk
Friday, March 22, 2024, 12:30–12:45, EB 202
Altermagnetic band splitting in CrSb thin films investigated by photoemission spectroscopy — •Lukas Odenbreit1, Sonka Reimers1, Libor Smejkal1, Vladimir Strocov2, Procopios Constantinou2, Anna Hellenes1, Rodrigo Jaeschke Ubiergo1, Warlley Campos1, Venkata Bharadwaj1, Atasi Chakraborty1, Mathias Kläui1, Jairo Sinova1, and Martin Jourdan1 — 1Institut für Physik, Johannes Gutenberg-Universität Mainz, 55099Mainz, Germany — 2Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
Altermagnets are characterized by a collinear magnetic phase with compensated order in real space and alternating spin polarization in reciprocal space.
Using spin-integrated soft X-ray angular resolved photoemission spectroscopy (SX-ARPES), we observe directly the associated band splitting near the Fermi energy. The SX-ARPES data obtained from epitaxial thin films of the anticipated antiferromagnetic material CrSb enable a comprehensive comparison with band structure calculations. Our analysis reveals a robust agreement between the experimental results and the theoretical predictions, thereby providing strong evidence for the characterization of CrSb as an altermagnet [Rei23].
The observed maximum altermagnetic band splitting of approximately 0.6 eV in proximity to the Fermi energy underscores the promising potential of altermagnets in advancing applications within the realm of spintronics.
[Rei23] S. Reimers et al., arXiv:2310.17280v1 (2023).
Keywords: Altermagnetism; CrSb; SX-ARPES