Evidence of spin and charge density waves in Chromium electronic bands

The incommensurate spin density wave (SDW) of Chromium represents the classic example of itinerant antiferromagnetism induced by the nesting of the Fermi surface, which is further enriched by the co-presence of a charge density wave (CDW). Here, we explore its electronic band structure using soft-X-ray angle-resolved photoemission spectroscopy (ARPES) for a proper bulk-sensitive investigation. We find that the long-range magnetic order gives rise to a very rich ARPES signal, which can only be interpreted with a proper first-principles description of the SDW and CDW, combined with a band unfolding procedure, reaching a remarkable agreement with experiments. Additional features of the SDW order are obscured by superimposed effects related to the photoemission process, which, unexpectedly, are not predicted by the free-electron model for the final states. We demonstrate that, even for excitation photon energies up to 1 keV, a multiple scattering description of the photoemission final states is required.

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Publication Details

Journal
Communications Materials
Published
2025-04-12
DOI
https://doi.org/10.1038/s43246-025-00789-0
Citations
1
Primary Topic
Electronic and Structural Properties of Oxides
Type
article
Field-Weighted Citation Impact
0.52

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article

Evidence of spin and charge density waves in Chromium electronic bands

Thorsten Schmitt, V. A. Rogalev, Vladimir N. Strocov, F. Bisti et al.
1 citations
Communications Materials
Electronic and Structural Properties of Oxides
0.52
article

Evidence of spin and charge density waves in Chromium electronic bands

Thorsten Schmitt, V. A. Rogalev, Vladimir N. Strocov, F. Bisti, M. Shi, J. Minář, G. Profeta, Roland Widmer, Paolo Settembri, Oliver Gröning
article en
1 citations

Abstract

The incommensurate spin density wave (SDW) of Chromium represents the classic example of itinerant antiferromagnetism induced by the nesting of the Fermi surface, which is further enriched by the co-presence of a charge density wave (CDW). Here, we explore its electronic band structure using soft-X-ray angle-resolved photoemission spectroscopy (ARPES) for a proper bulk-sensitive investigation. We find that the long-range magnetic order gives rise to a very rich ARPES signal, which can only be interpreted with a proper first-principles description of the SDW and CDW, combined with a band unfolding procedure, reaching a remarkable agreement with experiments. Additional features of the SDW order are obscured by superimposed effects related to the photoemission process, which, unexpectedly, are not predicted by the free-electron model for the final states. We demonstrate that, even for excitation photon energies up to 1 keV, a multiple scattering description of the photoemission final states is required.

Communications MaterialsVol. 6(1)
University of L'Aquila (IT), Paul Scherrer Institute (CH), Swiss Federal Laboratories for Materials Science and Technology (CH), Zhejiang University (CN), University of West Bohemia in Pilsen (CZ)
National Science Foundation, European Commission, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, National Natural Science Foundation of China
Openalex Percentile: Top 40%
Electronic and Structural Properties of Oxides
0.52
DOIOpen Access PDFOpenAlex
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