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

Dendzik, M. R., Xian, R. P., Perfetto, E., Sangalli, D., Kutnyakhov, D., Dong, S., et al. (2020). Observation of an Excitonic Mott Transition through Ultrafast Core-cum-Conduction Photoemission Spectroscopy. Physical Review Letters, 125(09): 096401. doi:10.1103/PhysRevLett.125.096401.

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Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-0006-8E13-5 Versions-Permalink: https://hdl.handle.net/21.11116/0000-000D-362D-5
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Urheber

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 Urheber:
Dendzik, Maciej Ramon1, 2, Autor           
Xian, R. Patrick1, Autor           
Perfetto, Enrico3, 4, Autor
Sangalli, Davide3, 5, Autor
Kutnyakhov, Dmytro6, Autor
Dong, Shuo1, Autor           
Beaulieu, Samuel1, Autor           
Pincelli, Tommaso1, Autor           
Pressacco, Federico7, Autor
Curcio, Davide8, Autor
Agustsson, Steinn Ymir9, Autor
Heber, Michael6, Autor
Hauer, Jasper1, Autor           
Wurth, Wilfried6, 7, Autor
Brenner, Günter6, Autor
Acremann, Yves10, Autor
Hofmann, Philip8, Autor
Wolf, Martin1, Autor           
Marini, Andrea3, Autor
Stefanucci, Gianluca4, 11, Autor
Rettig, Laurenz1, Autor           Ernstorfer, Ralph1, Autor            mehr..
Affiliations:
1Physical Chemistry, Fritz Haber Institute, Max Planck Society, ou_634546              
2Department of Applied Physics, KTH Royal Institute of Technology, Electrum 229, SE-16440, Stockholm, Kista, Sweden, ou_persistent22              
3CNR-ISM, Division of Ultrafast Processes in Materials (FLASHit), Area della Ricerca di Roma 1, Via Salaria Km 29.3, I-00016 Monterotondo Scalo, Italy, ou_persistent22              
4Department of Physics, Tor Vergata University of Rome, Via della Ricerca Scienti 1, 00133 Rome, Italy, ou_persistent22              
5Department of Physics, University of Milan, via Celoria 16, I-20133 Milan, Italy, ou_persistent22              
6DESY Photon Science, Notkestr. 85, 22607 Hamburg, Germany, ou_persistent22              
7Center for Free-Electron Laser Science CFEL, Hamburg University, Luruper Chausee 149, 22761 Hamburg, Germany, ou_persistent22              
8Department of Physics and Astronomy, Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Ny Munkegade 120, 8000 Aarhus C, Denmark, ou_persistent22              
9Institute of Physics, Johannes Gutenberg University Mainz, D-55128 Mainz, Germany, ou_persistent22              
10Department of Physics, Laboratory for Solid State Physics, ETH Zurich, Otto-Stern-Weg 1, 8093 Zurich, Switzerland, ou_persistent22              
11NFN, Sezione di Roma Tor Vergata, Via della Ricerca Scienti 1, 00133 Rome, Italy, ou_persistent22              

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Schlagwörter: Condensed Matter, Mesoscale and Nanoscale Physics, cond-mat.mes-hall, Condensed Matter, Materials Science, cond-mat.mtrl-sci, Condensed Matter, Strongly Correlated Electrons, cond-mat.str-el
 Zusammenfassung: 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 reveals a delayed core-hole renormalization due to
screening by excited quasi-free carriers, revealing an excitonic Mott
transition. These findings establish time-resolved core-level photoelectron
spectroscopy as a sensitive probe of subtle electronic many-body interactions
and an ultrafast electronic phase transition.

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Sprache(n): eng - English
 Datum: 2020-03-282020-06-072020-03-192020-07-242020-08-242020-08-28
 Publikationsstatus: Erschienen
 Seiten: 7
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: arXiv: 2003.12925
URI: http://arxiv.org/abs/2003.12925
DOI: 10.1103/PhysRevLett.125.096401
 Art des Abschluß: -

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Projektinformation

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Projektname : FLATLAND - Electron-lattice-spin correlations and many-body phenomena in 2D semiconductors and related heterostructures
Grant ID : 682843
Förderprogramm : Horizon 2020 (H2020)
Förderorganisation : European Commission (EC)

Quelle 1

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Titel: Physical Review Letters
  Kurztitel : Phys. Rev. Lett.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Woodbury, N.Y. : American Physical Society
Seiten: 7 Band / Heft: 125 (09) Artikelnummer: 096401 Start- / Endseite: - Identifikator: ISSN: 0031-9007
CoNE: https://pure.mpg.de/cone/journals/resource/954925433406_1