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| Naji, M. |
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| Motta, Antonella |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Casati, R. |
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| Kočí, Jan | Prague |
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| Azam, Siraj |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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Reimers, Sonka
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Topics
Publications (10/10 displayed)
- 2024Direct observation of altermagnetic band splitting in CrSb thin filmscitations
- 2024Magnetic domain engineering in antiferromagnetic CuMnAs and Mn 2 Aucitations
- 2023Defect-driven antiferromagnetic domain walls in CuMnAs films
- 2023Direct observation of altermagnetic band splitting in CrSb thin films
- 2023Current-driven writing process in antiferromagnetic Mn2Au for memory applicationscitations
- 2023Magnetic domain engineering in antiferromagnetic CuMnAs and Mn$_2$Au devices
- 2023Experimental electronic structure of the electrically switchable antiferromagnet CuMnAscitations
- 2023Experimental electronic structure of the electrically switchable antiferromagnet CuMnAscitations
- 2022Defect-driven antiferromagnetic domain walls in CuMnAs filmscitations
- 2022Antiferromagnetic domain structure in tetragonal CuMnAs films: A picturebook of domains, domain walls and everything in between
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article
Direct observation of altermagnetic band splitting in CrSb thin films
Abstract
Altermagnetism represents an emergent collinear magnetic phase with compensated order and an unconventional alternating even-parity wave spin order in the non-relativistic band structure. We investigate directly this unconventional band splitting near the Fermi energy through spinintegrated soft X-ray angular resolved photoemission spectroscopy. The experimentally obtained angle-dependent photoemission intensity, acquired from epitaxial thin films of the predicted altermagnet CrSb, demonstrates robust agreement with the corresponding band structure calculations. In particular, we observe the distinctive splitting of an electronic band on a low-symmetry path in the Brilliouin zone that connects two points featuring symmetry-induced degeneracy. The measured large magnitude of the spin splitting of approximately 0.6 eV and the position of the band just below the Fermi energy underscores the signifcance of altermagnets for spintronics based on robust broken time reversal symmetry responses arising from exchange energy scales, akin to ferromagnets, while remaining insensitive to external magnetic fields and possessing THz dynamics, akin to antiferromagnets.