A resonant photoemission study of YNi2B2C

Autor:	M. Kielwein, D. A. Teehan, Jörg Fink, M. Knupfer, Warren E. Pickett, David J. Singh, Mark S. Golden, M. Buchgeister
Přispěvatelé:	WZI (IoP, FNWI)
Rok vydání:	1994
Předmět:	Condensed Matter::Materials Science Materials science Valence (chemistry) Band gap Condensed Matter::Superconductivity General Physics and Astronomy Direct and indirect band gaps Electron hole Atomic physics Electronic band structure Valence electron Semimetal Quasi Fermi level
Zdroj:	Europhysics Letters, 28, 369-374. IOP Publishing Ltd.
ISSN:	1286-4854 0295-5075
Popis:	Valence level photoemission measurements of the normal-state electronic structure of the new boro-carbide intermetallic superconductor YNi2B2C are presented. The behaviour of the Ni-dominated valence band peak at 1.4 eV binding energy and the states at EF across the Ni 3p absorption threshold clearly indicate significant Ni3d contributions at these energies. In addition, the transfer of spectral weight from the main Ni3d valence band to a two-hole bound-state satellite at ~ 8 eV signals the role played by electron correlation in these materials. The peak in the DOS predicted to lie at EF in band structure calculations is not observed in the experiment, possibly also due to the effects of electron correlation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c61eafc77b910a161bd4924b8ef48af0 https://hdl.handle.net/11245/1.423572 Zobrazit plný text záznamu