Quasiparticle Spectra, Charge-Density Waves, Superconductivity, and Electron-Phonon Coupling in2H−NbSe2

2003/08/31 by T. Valla, A. V. Fedorov, А. В. Федоров +10 · 5 citations
Materials Science · Physics and Astronomy · #2D Materials and Applications #Iron-based superconductors research #Superconductivity in MgB2 and Alloys #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.92.086401

published as Phys. Rev. Lett. 92, 086401 (2004). · 4 pages, 3 figures, minor changes, to appear in PRL

arxiv created 2003/12/17 · openalex publication_date 2004/02/24 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/03

Abstract

High-resolution photoemission has been used to study the electronic structure of the charge-density wave (CDW) and superconducting dichalcogenide, 2H\mathrm\text\ensuremath-NbSe₂. From the extracted self-energies, important components of the quasiparticle interactions have been identified. In contrast to previously studied TaSe₂, the CDW transition does not affect the electronic properties significantly. The electron-phonon coupling is identified as a dominant contribution to the quasiparticle self-energy and is shown to be very anisotropic (k dependent) and much stronger than in TaSe₂.

Citations

• Interband Proximity Effect and Nodes of Superconducting Gap inSr2RuO4
• Bardeen-Cooper-Schrieffer Theory of Superconductivity in the Case of Overlapping Bands
• Many-Body Effects in Angle-Resolved Photoemission: Quasiparticle Energy and Lifetime of a Mo(110) Surface State

Cited by

• Evolution of the Electronic Structure of1T−CuxTiSe2
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• Fabrication and superconductivity ofNaxTaS2crystals
• Primary Role of the Barely Occupied States in the Charge Density Wave Formation ofNbSe2
• Upper critical field and pairing symmetry of Ising superconductors