Imperial College London
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DrAnnaRegoutz

Faculty of Engineering, Department of Materials

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Contact

 

a.regoutz Website

 
 
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Location

 

2.M14Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Kalha:2022:10.1103/PhysRevB.105.045129,
author = {Kalha, C and Ratcliff, LE and Gutierrez, Moreno JJ and Mohr, S and Mantsinen, M and Fernando, NK and Thakur, PK and Lee, T-L and Tseng, H-H and Nunney, TS and Kahk, JM and Lischner, J and Regoutz, A},
doi = {10.1103/PhysRevB.105.045129},
journal = {Physical Review B: Condensed Matter and Materials Physics},
pages = {1--18},
title = {Lifetime effects and satellites in the photoelectron spectrum of tungsten metal},
url = {http://dx.doi.org/10.1103/PhysRevB.105.045129},
volume = {105},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Tungsten (W) is an important and versatile transition metal and has a firm place at the heart of many technologies. A popular experimental technique for the characterization of tungsten and tungsten-based compounds is x-ray photoelectron spectroscopy (XPS), which enables the assessment of chemical states and electronic structure through the collection of core level and valence band spectra. However, in the case of tungsten metal, open questions remain regarding the origin, nature, and position of satellite features that are prominent in the photoelectron spectrum. These satellites are a fingerprint of the electronic structure of the material and have not been thoroughly investigated, at times leading to their misinterpretation. The present work combines high-resolution soft and hard x-ray photoelectron spectroscopy (SXPS and HAXPES) with reflected electron energy loss spectroscopy (REELS) and a multitiered ab initio theoretical approach, including density functional theory (DFT) and many-body perturbation theory (G0W0 and GW+C), to disentangle the complex set of experimentally observed satellite features attributed to the generation of plasmons and interband transitions. This combined experiment-theory strategy is able to uncover previously undocumented satellite features, improving our understanding of their direct relationship to tungsten's electronic structure. Furthermore, it lays the groundwork for future studies into tungsten-based mixed-metal systems and holds promise for the reassessment of the photoelectron spectra of other transition and post-transition metals, where similar questions regarding satellite features remain.
AU  - Kalha,C
AU  - Ratcliff,LE
AU  - Gutierrez,Moreno JJ
AU  - Mohr,S
AU  - Mantsinen,M
AU  - Fernando,NK
AU  - Thakur,PK
AU  - Lee,T-L
AU  - Tseng,H-H
AU  - Nunney,TS
AU  - Kahk,JM
AU  - Lischner,J
AU  - Regoutz,A
DO  - 10.1103/PhysRevB.105.045129
EP  - 18
PY  - 2022///
SN  - 1098-0121
SP  - 1
TI  - Lifetime effects and satellites in the photoelectron spectrum of tungsten metal
T2  - Physical Review B: Condensed Matter and Materials Physics
UR  - http://dx.doi.org/10.1103/PhysRevB.105.045129
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000747577000002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://journals.aps.org/prb/abstract/10.1103/PhysRevB.105.045129
UR  - http://hdl.handle.net/10044/1/104761
VL  - 105
ER  -
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