Optical fingerprints of the electronic band reconstruction in van der Waals magnetic materials

Autor: M Corasaniti, R Yang, Y Liu, C Petrovic, L Degiorgi
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: New Journal of Physics, Vol 24, Iss 12, p 123018 (2022)
Druh dokumentu: article
ISSN: 1367-2630
DOI: 10.1088/1367-2630/aca8c5
Popis: We report a broadband study of the charge dynamics in the van der Waals magnetic materials 2H- M _x TaS _2 ( M = Mn and Co), which span the onset of both long-range antiferromagnetic (AFM) and ferromagnetic (FM) order, depending on the intercalation M and its concentration x . We discover a spectral weight ( SW ) shift from high to low energy scales for FM compositions, while reversely SW is removed from low towards high spectral energies for AFM compounds. This maps the related reconstruction of the electronic band structure along the crossover from the FM to AFM order, which restores an occupation balance in the density of states between spin majority and minority bands of the intercalated 3 d elements.
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