To characterize in detail the charge density wave (CDW) transition of 1T-VSe2, its electronic structure and lattice dynamics are comprehensively studied by means of x-ray diffraction, muon spectroscopy, angle resolved photoemission (ARPES), diffuse and inelastic x-ray scattering, and state-of-the-art first-principles density functional theory calculations. Resonant elastic x-ray scattering does not show any resonant enhancement at either V or Se, indicating that the CDW peak at the K edges describes a purely structural modulation of the electronic ordering. ARPES experiments identify (i) a pseudogap at T>T-CDW, which leads to a depletion of the density of states in the ML-M'L' plane at T
Electronic structure and lattice dynamics of 1T-VSe2:Origin of the three-dimensional charge density wave / Diego, Josu; Subires, D.; Said, A. H.; Chaney, D. A.; Korshunov, A.; Garbarino, G.; Diekmann, F.; Mahatha, S. K.; Pardo, V.; Wilkinson, J. M.; Lord, J. S.; Strempfer, J.; Perez, Pablo J. Bereciartua; Francoual, S.; Popescu, C.; Tallarida, M.; Dai, J.; Bianco, Raffaello; Monacelli, Lorenzo; Calandra, Matteo; Bosak, A.; Mauri, Francesco; Rossnagel, K.; Fumega, Adolfo O.; Errea, Ion; Blanco-Canosa, S.. - In: PHYSICAL REVIEW. B. - ISSN 2469-9950. - 109:3(2024), pp. 035133-1-035133-19. [10.1103/physrevb.109.035133]
Electronic structure and lattice dynamics of 1T-VSe2:Origin of the three-dimensional charge density wave
Bianco, Raffaello;
2024
Abstract
To characterize in detail the charge density wave (CDW) transition of 1T-VSe2, its electronic structure and lattice dynamics are comprehensively studied by means of x-ray diffraction, muon spectroscopy, angle resolved photoemission (ARPES), diffuse and inelastic x-ray scattering, and state-of-the-art first-principles density functional theory calculations. Resonant elastic x-ray scattering does not show any resonant enhancement at either V or Se, indicating that the CDW peak at the K edges describes a purely structural modulation of the electronic ordering. ARPES experiments identify (i) a pseudogap at T>T-CDW, which leads to a depletion of the density of states in the ML-M'L' plane at T
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