To Örebro University

oru.seÖrebro University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Ultrafast doublon dynamics in photo-excited 1T-TaS2
Faculty of Physics, University of Duisburg-Essen, Duisburg, Germany.
Faculty of Physics, University of Duisburg-Essen, Duisburg, Germany.
Department of Physics, University of Fribourg, Fribourg, Switzerland.
Department of Physics, University of Fribourg, Fribourg, Switzerland.ORCID iD: 0000-0002-7263-4403
Show others and affiliations
2018 (English)In: Physical Review Letters, ISSN 0031-9007, E-ISSN 1079-7114, Vol. 120, no 16, article id 166401Article in journal (Refereed) Published
Abstract [en]

Strongly correlated materials exhibit intriguing properties caused by intertwined microscopic interactions that are hard to disentangle in equilibrium. Employing nonequilibrium time-resolved photoemission spectroscopy on the quasi-two-dimensional transition-metal dichalcogenide 1T-TaS2, we identify a spectroscopic signature of doubly occupied sites (doublons) that reflects fundamental Mott physics. Doublon-hole recombination is estimated to occur on timescales of electronic hopping ℏ/J≈14  fs. Despite strong electron-phonon coupling, the dynamics can be explained by purely electronic effects captured by the single-band Hubbard model under the assumption of weak hole doping, in agreement with our static sample characterization. This sensitive interplay of static doping and vicinity to the metal-insulator transition suggests a way to modify doublon relaxation on the few-femtosecond timescale.

Place, publisher, year, edition, pages
American Physical Society , 2018. Vol. 120, no 16, article id 166401
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:oru:diva-89807DOI: 10.1103/PhysRevLett.120.166401ISI: 000430306800006PubMedID: 29756943Scopus ID: 2-s2.0-85045558936OAI: oai:DiVA.org:oru-89807DiVA, id: diva2:1530392
Note

Funding Agencies:

German Research Foundation (DFG) SFB 616 SPP 1458 SFB 1242 FOR1700

European Research Council (ERC) 278023 724103

Available from: 2021-02-22 Created: 2021-02-22 Last updated: 2021-02-23Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textPubMedScopus

Authority records

Strand, Hugo

Search in DiVA

By author/editor
Strand, Hugo
In the same journal
Physical Review Letters
Condensed Matter Physics

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 47 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf