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On the combined use of GW approximation and cumulant expansion in the calculations of quasiparticle spectra: The paradigm of Si valence bands

Abstract:

Since the earliest implementations of the various GW approximations and cumulant expansion in the calculations of quasiparticle propagators and spectra, several attempts have been made to combine the advantageous properties and results of these two theoretical approaches. While the GW-plus-cumulant approach has proven successful in interpreting photoemission spectroscopy data in solids, the formal connection between the two methods has not been investigated in detail. By introducing a general...

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Publication status:
Published
Peer review status:
Peer reviewed

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Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author
More from this funder
Name:
Engineering and Physical Sciences Research Council
Funding agency for:
Caruso, F
Giustino, F
Grant:
EP/J009857/1
EP/J009857/1
EP/J009857/1
More from this funder
Name:
Leverhulme Trust
Funding agency for:
Caruso, F
Giustino, F
Grant:
EP/J009857/1
EP/J009857/1
RL-2012-001
More from this funder
Name:
Croatian Science Foundation
Grant:
3526
Publisher:
American Physical Society
Journal:
Physical Review B More from this journal
Volume:
94
Issue:
3
Pages:
035103
Publication date:
2016-07-01
Acceptance date:
2016-04-27
DOI:
ISSN:
2469-9969 and 2469-9950
Keywords:
Pubs id:
pubs:636601
UUID:
uuid:6e589563-be0c-4f43-b06d-cf430349a009
Local pid:
pubs:636601
Source identifiers:
636601
Deposit date:
2016-11-07

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