Strontium Titanate

K. van Benthem, C. Elsässer, R. H. French, “Bulk Electronic Structure of SrTiO₃: Experiment and Theory”, Journal of Applied Physics, 90, 12, 6156-64, (2001). 
Download a PDF Here

Bulk Electronic Structure of SrTiO₃: Experiment and Theory

K. van Benthem1, R. H. French2, W. Sigle1, C. Elsässer1, and M. Rühle1

1Max-Planck-Institut für Metallforschung, Seestraße 92, D-70174 Stuttgart, Germany

2DuPont Corporation Central Research, E356-384, Exp. St., Wilmington, Delaware 19880-0356, USA

Abstract

Valence electron energy loss spectroscopy in a dedicated scanning transmission electron microscope, Vacuum ultraviolet spectroscopy and spectroscopic Ellipsometry, and ab initio band structure calculations in the local density approximation has been used to obtain the interband transition strength of SrTiO3.  The electronic structure of bulk SrTiO3 has been analysed quantitatively by comparing VEELS spectra with vacuum ultraviolet spectra and with ab initio density of states calculations. 

Figure4: Jcv from VUV (solid) with comparison to EELS (dotted) and Ellipsometry (dashed) To 15 eV.  

Figure 5: Jcv from EELS (solid) with comparison to VUV (dashed) to 85 eV.

Figure 6: f sum rules from VEELS and VUV.

Figure 9: Index of Refraction (solid) and Extinction Coefficient (dashed) from VEELS (data extendeing to 85 eV) and VUV (data ending at 45 eV).

Comment: (c) 2009 Roger H. French , frenchrh@lrsm.upenn.edu
All Rights Reserved, See Appropriate Use Page