In situ photoemission study of LaNiO3 thin films grown by pulsed laser deposition

K. Horiba, Ritsuko Eguchi, M. Taguchi, A. Chainani, A. Kikkawa, Y. Senba, H. Ohashi, S. Shin

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We investigate the electronic structure of high-quality single-crystal LaNiO3(LNO) thin films using in situ photoemission spectroscopy (PES) in order to reveal the intrinsic electronic structure of LNO. The O 1s X-ray absorption (XAS) spectrum, which have much deeper probing depth than that of PES measurement, is in good agreement with previous studies on polycrystalline LNO surfaces. The in situ valence band PES spectrum shows well-resolved Ni 3d-derived t2g and eg features, while earlier X-ray photoemission studies on polycrystals showed a single band peak. The narrow eg-derived feature exhibits enhanced intensity compared to local density approximation band structure calculations. The results are consistent with a renormalization of electronic states at EF, in terms of the known enhanced effective mass.

Original languageEnglish
Pages (from-to)107-110
Number of pages4
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume156-158
DOIs
Publication statusPublished - May 2007
Externally publishedYes

Fingerprint

Photoemission
Pulsed laser deposition
Photoelectron spectroscopy
pulsed laser deposition
photoelectric emission
Thin films
Electronic structure
thin films
Local density approximation
Polycrystals
X ray absorption
Electronic states
spectroscopy
electronic structure
Valence bands
Band structure
Absorption spectra
polycrystals
Single crystals
X rays

Keywords

  • In situ photoemission spectroscopy
  • LaNiO thin film
  • Pulsed laser deposition

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces

Cite this

In situ photoemission study of LaNiO3 thin films grown by pulsed laser deposition. / Horiba, K.; Eguchi, Ritsuko; Taguchi, M.; Chainani, A.; Kikkawa, A.; Senba, Y.; Ohashi, H.; Shin, S.

In: Journal of Electron Spectroscopy and Related Phenomena, Vol. 156-158, 05.2007, p. 107-110.

Research output: Contribution to journalArticle

Horiba, K. ; Eguchi, Ritsuko ; Taguchi, M. ; Chainani, A. ; Kikkawa, A. ; Senba, Y. ; Ohashi, H. ; Shin, S. / In situ photoemission study of LaNiO3 thin films grown by pulsed laser deposition. In: Journal of Electron Spectroscopy and Related Phenomena. 2007 ; Vol. 156-158. pp. 107-110.
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AU - Senba, Y.

AU - Ohashi, H.

AU - Shin, S.

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