Photoemission and inverse-photoemission study of superconducting YNi2B2C: Effects of electron-electron and electron-phonon interactions

A. Fujimori, K. Kobayashi, Takashi Mizokawa, K. Mamiya, A. Sekiyama, H. Eisaki, H. Takagi, S. Uchida, R. J. Cava, J. J. Krajewski, W. F. Peck

Research output: Contribution to journalArticle

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Abstract

We have studied the electronic structure of the superconductor YNi2B2C by photoemission and inverse-photoemission spectroscopy. The spectra show a prominent Ni 3d band centered around 1.5 eV below the Fermi level (EF), whose top crosses EF, and B, C 2sp-derived states at higher binding energies, generally consistent with band-structure calculations. However, the Ni 3d-derived conduction bands are narrower than calculated and are accompanied by a satellite, signaling electron-correlation effects within the d bands. The density-of-states peak at EF predicted by band-structure calculations is suppressed and its spectral weight is transferred away from EF, presumably due to an electron-phonon interaction and/or electron correlation.

Original languageEnglish
Pages (from-to)9660-9663
Number of pages4
JournalPhysical Review B
Volume50
Issue number13
DOIs
Publication statusPublished - 1994
Externally publishedYes

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Electron correlations
Electron-phonon interactions
Photoemission
electron phonon interactions
Band structure
photoelectric emission
Electrons
Photoelectron spectroscopy
Fermi level
Conduction bands
Binding energy
Superconducting materials
Electronic structure
electrons
Satellites
conduction bands
binding energy
electronic structure
spectroscopy

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Photoemission and inverse-photoemission study of superconducting YNi2B2C : Effects of electron-electron and electron-phonon interactions. / Fujimori, A.; Kobayashi, K.; Mizokawa, Takashi; Mamiya, K.; Sekiyama, A.; Eisaki, H.; Takagi, H.; Uchida, S.; Cava, R. J.; Krajewski, J. J.; Peck, W. F.

In: Physical Review B, Vol. 50, No. 13, 1994, p. 9660-9663.

Research output: Contribution to journalArticle

Fujimori, A, Kobayashi, K, Mizokawa, T, Mamiya, K, Sekiyama, A, Eisaki, H, Takagi, H, Uchida, S, Cava, RJ, Krajewski, JJ & Peck, WF 1994, 'Photoemission and inverse-photoemission study of superconducting YNi2B2C: Effects of electron-electron and electron-phonon interactions', Physical Review B, vol. 50, no. 13, pp. 9660-9663. https://doi.org/10.1103/PhysRevB.50.9660
Fujimori, A. ; Kobayashi, K. ; Mizokawa, Takashi ; Mamiya, K. ; Sekiyama, A. ; Eisaki, H. ; Takagi, H. ; Uchida, S. ; Cava, R. J. ; Krajewski, J. J. ; Peck, W. F. / Photoemission and inverse-photoemission study of superconducting YNi2B2C : Effects of electron-electron and electron-phonon interactions. In: Physical Review B. 1994 ; Vol. 50, No. 13. pp. 9660-9663.
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AU - Kobayashi, K.

AU - Mizokawa, Takashi

AU - Mamiya, K.

AU - Sekiyama, A.

AU - Eisaki, H.

AU - Takagi, H.

AU - Uchida, S.

AU - Cava, R. J.

AU - Krajewski, J. J.

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