Weak electronic correlations observed in magnetic Weyl Semimetal Mn3Ge

Using angle-resolved photoemission spectroscopy (ARPES) and density functional theory (DFT) calculations, we systematically studied the electronic band structure of Mn3Ge in the vicinity of the Fermi level. We observe several bands crossing the Fermi level, confirming the metallic nature of the stud...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2024-03, Vol.36 (12)
Main Authors: Changdar, Susmita, Ghosh, Susanta, Bose, Anumita, Kar, Indrani, Low, Achintya, Le Fèvre, Patrick, Bertran, François, Narayan, Awadhesh, Thirupathaiah, Setti
Format: Article
Language:English
Subjects:
DFT calculations
electronic correlations
Kagome systems
photoemission spectroscopy
Weyl Semimetals
Online Access:Get full text
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Summary:Using angle-resolved photoemission spectroscopy (ARPES) and density functional theory (DFT) calculations, we systematically studied the electronic band structure of Mn3Ge in the vicinity of the Fermi level. We observe several bands crossing the Fermi level, confirming the metallic nature of the studied system. We further observe several flat bands along various high symmetry directions, consistent with the DFT calculations. The calculated partial density of states suggests a dominant Mn 3dorbital contribution to the total valence band DOS. With the help of orbital-resolved band structure calculations, we qualitatively identify the orbital information of the experimentally obtained band dispersions. Out-of-plane electronic band dispersions are explored by measuring the ARPES data at various photon energies. Importantly, our study suggests relatively weaker electronic correlations in Mn3Ge compared to Mn3Sn.
ISSN:0953-8984
1361-648X
DOI:10.1088/1361-648X/ad1303