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@article{Lischner:2016:10.1063/1.4947594,
author = {Lischner, J and Nemák, S and Conti, G and Gloskovskii, A and Pálsson, GK and Schneider, CM and Drube, W and Louie, SG and Fadley, C},
doi = {10.1063/1.4947594},
journal = {Journal of Applied Physics},
title = {Accurate determination of the valence band edge in hard x-ray photoemission spectra using GW theory},
url = {http://dx.doi.org/10.1063/1.4947594},
volume = {119},
year = {2016}
}

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TY  - JOUR
AB  - We introduce a new method for determining accurate values of the valence-band maximum in x-ray photoemissionspectra. Specifically, we align the sharpest peak in the valence-band region of the experimental spectrum with the corresponding feature of a theoretical valence-band density of states curve from ab initio GW theory calculations. This method is particularly useful for soft and hard x-ray photoemission studies of materials with a mixture of valence-band characters, where strong matrix element effects can render standard methods for extracting the valence-band maximum unreliable. We apply our method to hydrogen-terminated boron-doped diamond, which is a promising substrate material for novel solar cell devices. By carrying out photoemission experiments with variable light polarizations, we verify the accuracy of our analysis and the general validity of the method.
AU  - Lischner,J
AU  - Nemák,S
AU  - Conti,G
AU  - Gloskovskii,A
AU  - Pálsson,GK
AU  - Schneider,CM
AU  - Drube,W
AU  - Louie,SG
AU  - Fadley,C
DO  - 10.1063/1.4947594
PY  - 2016///
SN  - 1089-7550
TI  - Accurate determination of the valence band edge in hard x-ray photoemission spectra using GW theory
T2  - Journal of Applied Physics
UR  - http://dx.doi.org/10.1063/1.4947594
UR  - http://hdl.handle.net/10044/1/32739
VL  - 119
ER  -

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