Empirical application of Dyson’s equation to the L2,3 soft-x-rayemission transition densities of states of c-Si and a-Si:H

P. A. Bruhwiler and S. E. Schnatterly
Phys. Rev. B 39, 12649 – Published 15 June 1989
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Abstract

We have measured the soft-x-ray–emission L2,3 spectra of c-Si and a-Si:H and removed the shakeup and bremsstrahlung contributions using the method of Livins and Schnatterly [Phys. Rev. B 37, 6731 (1988); 37, 6742 (1988)]. We have obtained an estimate of the real part of the self-energy describing the effect of the random potential which characterizes a-Si:H on the c-Si transition density of states (TDOS), using an approach based on Dyson’s equation. This approach also yields the TDOS of c-Si and a-Si:H outright. In addition, we resolve the spectra into L2 and L3 components using an iterative procedure and remove an estimate of the intrinsic broadening effects, and thereby obtain a second determination of the TDOS. These results and those obtained through the procedure based on Dyson’s equation agree. The TDOS obtained for c-Si compares well with calculations.

  • Received 12 January 1989

DOI:https://doi.org/10.1103/PhysRevB.39.12649

©1989 American Physical Society

Authors & Affiliations

P. A. Bruhwiler and S. E. Schnatterly

  • Jesse W. Beams Laboratory of Physics, University of Virginia, Charlottesville, Virginia 22901

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Issue

Vol. 39, Iss. 17 — 15 June 1989

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