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Calculated and experimental low-loss electron energy loss spectra of dislocations in diamond and GaN

Jones, R, Fall, CJ, Gutiérrez-Sosa, A, Bangert, U, Heggie, MI, Blumenau, AT, Frauenheim, T and Briddon, PR (2002) Calculated and experimental low-loss electron energy loss spectra of dislocations in diamond and GaN Journal of Physics Condensed Matter, 14 (48). pp. 12793-12800.

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Abstract

First-principles calculations of electron energy loss (EEL) spectra for bulk GaN and diamond are compared with experimental spectra acquired with a scanning tunnelling electron microscope offering ultra-high-energy resolution in low-loss energy spectroscopy. The theoretical bulk low-loss EEL spectra, in the Eg to 10 eV range, are in good agreement with experimental data. Spatially resolved spectra from dislocated regions in both materials are distinct from bulk spectra. The main effects are, however, confined to energy losses lying above the band edge. The calculated spectra for low-energy dislocations in diamond are consistent with the experimental observations, but difficulties remain in understanding the spectra of threading dislocations in GaN.

Item Type: Article
Authors :
NameEmailORCID
Jones, RUNSPECIFIEDUNSPECIFIED
Fall, CJUNSPECIFIEDUNSPECIFIED
Gutiérrez-Sosa, AUNSPECIFIEDUNSPECIFIED
Bangert, UUNSPECIFIEDUNSPECIFIED
Heggie, MIm.heggie@surrey.ac.ukUNSPECIFIED
Blumenau, ATUNSPECIFIEDUNSPECIFIED
Frauenheim, TUNSPECIFIEDUNSPECIFIED
Briddon, PRUNSPECIFIEDUNSPECIFIED
Date : 16 December 2002
Identification Number : https://doi.org/10.1088/0953-8984/14/48/318
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 12:42
Last Modified : 17 May 2017 12:42
URI: http://epubs.surrey.ac.uk/id/eprint/836438

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