Enhancement of electron correlation in Co thin clusters grown on S/GaAs (001)

Ayumi Harasawa, Taichi Okuda, Takanori Wakita, Takahide Tohyama, Toyoaki Eguchi, Kan Nakatsuji, Nobuo Ueno, Krishna G. Nath, Toyohiko Kinoshita

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

An enhancement of the electron correlation effect by electron confinement is revealed in Co clusters formed on a sulfur passivated GaAs(001) surface. A satellite peak due to the strong electron correlation is observed at a binding energy of 5 eV in the valence band spectrum of Co photoemission spectroscopy. The photon energy dependences of the intensity and the spin polarization of the satellite are essentially the same to those of the well-known Ni 6 eV satellite. This suggests that the satellite is caused by the relatively strong 3d-3d electron correlation effect of the Co cluster and less hybridization effect at the interface.

Original languageEnglish
Article number205416
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume73
Issue number20
DOIs
Publication statusPublished - 2006

Fingerprint

Electron correlations
Satellites
augmentation
electrons
Spin polarization
Photoelectron spectroscopy
Valence bands
Binding energy
Sulfur
sulfur
photoelectric emission
Photons
binding energy
valence
gallium arsenide
Electrons
photons
polarization
spectroscopy
energy

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Enhancement of electron correlation in Co thin clusters grown on S/GaAs (001). / Harasawa, Ayumi; Okuda, Taichi; Wakita, Takanori; Tohyama, Takahide; Eguchi, Toyoaki; Nakatsuji, Kan; Ueno, Nobuo; Nath, Krishna G.; Kinoshita, Toyohiko.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 73, No. 20, 205416, 2006.

Research output: Contribution to journalArticle

Harasawa, A, Okuda, T, Wakita, T, Tohyama, T, Eguchi, T, Nakatsuji, K, Ueno, N, Nath, KG & Kinoshita, T 2006, 'Enhancement of electron correlation in Co thin clusters grown on S/GaAs (001)', Physical Review B - Condensed Matter and Materials Physics, vol. 73, no. 20, 205416. https://doi.org/10.1103/PhysRevB.73.205416
Harasawa, Ayumi ; Okuda, Taichi ; Wakita, Takanori ; Tohyama, Takahide ; Eguchi, Toyoaki ; Nakatsuji, Kan ; Ueno, Nobuo ; Nath, Krishna G. ; Kinoshita, Toyohiko. / Enhancement of electron correlation in Co thin clusters grown on S/GaAs (001). In: Physical Review B - Condensed Matter and Materials Physics. 2006 ; Vol. 73, No. 20.
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