Year: 2025
Type: article
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.
Source: Communications Materials
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,690
Awards: G1323383031, G190755355, G2406753216, International Fellowship Program on Materials & Matter, Energy & Environment, Human Health & Life-Sciences, and Accelerator Technology, G3207356259, G364702999, G3810236772, G393177772, G4104599821, G4396925471, G4862644622, G4881873141, Electronic Structure of Three-Dimensional Correlated Systems by Soft-X-Ray ARPES, G5135204645, G539632367, G5702163051, G5742972445, G6412048503, G6452399718, G7003971911, G7467899275, G7959666350, G903117326, G917857839, G993971353
OpenAlex ID: W4409379964