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Proceedings Paper

Dependence of the photoelectron spectral function on hole doping in Nd1-xSrxTiO3
Author(s): S. W. Robey; V. E. Henrich; C. Eylem; B. W. Eichhorn
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Paper Abstract

Photoelectron spectroscopy was employed to follow the development of the Ti 3d spectral intensity within approximately 3 eV of the Fermi level (EF) in Nd1-xSrxTiO3 as a function of x. The total intensity in this region is found to correlate linearly with composition as the nominal Ti valence is varied from plus 3 to plus 4. Changes in the spectral structure in this binding energy region are discussed in terms of the one-electron spectral function. For x less than 0.25, (semiconducting compositions) only incoherent intensity associated with the lower Hubbard band is present. Additional intensity, attributed to a coherent quasiparticle contribution, appears at the composition of the metal-insulator transition, x approximately 0.25. The relative intensities of these two components are determined as a function of x, and connections with theoretical models and experimental results on related systems are discussed.

Paper Details

Date Published: 10 June 1996
PDF: 10 pages
Proc. SPIE 2696, Spectroscopic Studies of Superconductors, (10 June 1996); doi: 10.1117/12.241782
Show Author Affiliations
S. W. Robey, National Institute of Standards and Technology (United States)
V. E. Henrich, Yale Univ. (United States)
C. Eylem, Univ. of Maryland/College Park (United States)
B. W. Eichhorn, Univ. of Maryland/College Park (United States)

Published in SPIE Proceedings Vol. 2696:
Spectroscopic Studies of Superconductors
Ivan Bozovic; Dirk van der Marel, Editor(s)

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