Observation of an Excitonic Mott Transition Through Ultrafast Core- cum -Conduction Photoemission Spectroscopy

Publication type:
Journal article
Metadata:
Autoren
  • Maciej Dendzik
  • R Patrick Xian
  • Enrico Perfetto
  • Davide Sangalli
  • Dmytro Kutnyakhov
  • Shuo Dong
  • Samuel Beaulieu
  • Tommaso Pincelli
  • Federico Pressacco
  • Davide Curcio
  • Steinn Ymir Agustsson
  • Michael Heber
  • Jasper Hauer
  • Wilfried Wurth
  • Günter Brenner
  • Yves Acremann
  • Philip Hofmann
  • Martin Wolf
  • Andrea Marini
  • Gianluca Stefanucci
  • Laurenz Rettig
  • Ralph Ernstorfer
DOI
10.1103/physrevlett.125.096401
eISSN
1079-7114
ISSN
0031-9007
Ausgabe der Veröffentlichung
9
Zeitschrift
Physical Review Letters
Sprache
en
Artikelnummer
096401
Online publication date
2020
Status
Published online
Herausgeber
American Physical Society (APS)
Herausgeber URL
http://dx.doi.org/10.1103/physrevlett.125.096401
Datum der Datenerfassung
2020
Titel
Observation of an Excitonic Mott Transition Through Ultrafast Core- <i>cum</i> -Conduction Photoemission Spectroscopy
Ausgabe der Zeitschrift
125

Data source: Crossref

Other metadata sources:
Abstract
Time-resolved soft-x-ray photoemission spectroscopy is used to simultaneously measure the ultrafast dynamics of core-level spectral functions and excited states upon excitation of excitons in WSe_{2}. We present a many-body approximation for the Green's function, which excellently describes the transient core-hole spectral function. The relative dynamics of excited-state signal and core levels clearly show a delayed core-hole renormalization due to screening by excited quasifree carriers resulting from an excitonic Mott transition. These findings establish time-resolved core-level photoelectron spectroscopy as a sensitive probe of subtle electronic many-body interactions and ultrafast electronic phase transitions.
Addresses
  • Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, 14915 Berlin, Germany.
Autoren
  • Maciej Dendzik
  • R Patrick Xian
  • Enrico Perfetto
  • Davide Sangalli
  • Dmytro Kutnyakhov
  • Shuo Dong
  • Samuel Beaulieu
  • Tommaso Pincelli
  • Federico Pressacco
  • Davide Curcio
  • Steinn Ymir Agustsson
  • Michael Heber
  • Jasper Hauer
  • Wilfried Wurth
  • Günter Brenner
  • Yves Acremann
  • Philip Hofmann
  • Martin Wolf
  • Andrea Marini
  • Gianluca Stefanucci
  • Laurenz Rettig
  • Ralph Ernstorfer
DOI
10.1103/physrevlett.125.096401
eISSN
1079-7114
Externe Identifier
  • PubMed Identifier: 32915590
Funding acknowledgements
  • Natural Sciences and Engineering Research Council of Canada:
  • Horizon 2020 Framework Programme: 824143
  • Max-Planck-Gesellschaft:
  • Villum Fonden: 00011744
  • Ministero dell’Istruzione, dell’Università e della Ricerca: 20173B72NB
  • Deutsche Forschungsgemeinschaft: RE 3977/1
  • Villum Fonden: 11744
  • Horizon 2020 Framework Programme: 676598
  • NFFA: 879
  • European Research Council:
  • Horizon 2020 Framework Programme: ERC-2015-CoG-682843
Open access
false
ISSN
0031-9007
Ausgabe der Veröffentlichung
9
Zeitschrift
Physical review letters
Sprache
eng
Medium
Print
Paginierung
096401
Datum der Veröffentlichung
2020
Status
Published
Publisher licence
CC BY
Datum der Datenerfassung
2020
Titel
Observation of an Excitonic Mott Transition through Ultrafast Core-cum-Conduction Photoemission Spectroscopy.
Sub types
  • Journal Article
Ausgabe der Zeitschrift
125

Data source: Europe PubMed Central

Abstract
Time-resolved soft-x-ray photoemission spectroscopy is used to simultaneously measure the ultrafast dynamics of core-level spectral functions and excited states upon excitation of excitons in WSe_{2}. We present a many-body approximation for the Green's function, which excellently describes the transient core-hole spectral function. The relative dynamics of excited-state signal and core levels clearly show a delayed core-hole renormalization due to screening by excited quasifree carriers resulting from an excitonic Mott transition. These findings establish time-resolved core-level photoelectron spectroscopy as a sensitive probe of subtle electronic many-body interactions and ultrafast electronic phase transitions.
Date of acceptance
2020
Autoren
  • Maciej Dendzik
  • R Patrick Xian
  • Enrico Perfetto
  • Davide Sangalli
  • Dmytro Kutnyakhov
  • Shuo Dong
  • Samuel Beaulieu
  • Tommaso Pincelli
  • Federico Pressacco
  • Davide Curcio
  • Steinn Ymir Agustsson
  • Michael Heber
  • Jasper Hauer
  • Wilfried Wurth
  • Günter Brenner
  • Yves Acremann
  • Philip Hofmann
  • Martin Wolf
  • Andrea Marini
  • Gianluca Stefanucci
  • Laurenz Rettig
  • Ralph Ernstorfer
Autoren-URL
https://www.ncbi.nlm.nih.gov/pubmed/32915590
DOI
10.1103/PhysRevLett.125.096401
eISSN
1079-7114
Ausgabe der Veröffentlichung
9
Zeitschrift
Phys Rev Lett
Sprache
eng
Country
United States
Paginierung
096401
Datum der Veröffentlichung
2020
Status
Published
Titel
Observation of an Excitonic Mott Transition through Ultrafast Core-cum-Conduction Photoemission Spectroscopy.
Sub types
  • Journal Article
Ausgabe der Zeitschrift
125

Data source: PubMed

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