Photoemission spectral weight transfer and mass renormalization in the Fermi-liquid system La1-xSrxTiO3+y/2

T. Yoshida, A. Ino, T. Mizokawa, A. Fujimori, Y. Taguchi, T. Katsufuji, Y. Tokura

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

We have performed a photoemission study of La1-xSrxTiO3+y/2 near the filling-control metal-insulator transition (MIT) as a function of hole doping. The spectral intensity at the chemical potential (μ) and the mass enhancement factor deduced from the bandwidth show qualitatively the same doping dependence as the specific coefficient γ except for near the MIT, where additional mass renormalization may occur in the vicinity of μ. Upon antiferromagnetic ordering, spectral weight transfer occurs from the coherent to the incoherent parts, which we associate with the partial gap opening at μ.

Original languageEnglish
Pages (from-to)258-264
Number of pages7
JournalEurophysics Letters
Volume59
Issue number2
DOIs
Publication statusPublished - 2002 Aug 14
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Photoemission spectral weight transfer and mass renormalization in the Fermi-liquid system La<sub>1-x</sub>Sr<sub>x</sub>TiO<sub>3+y/2</sub>'. Together they form a unique fingerprint.

  • Cite this