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dc.contributor.authorMajchrzak, Paulina
dc.contributor.authorPakdel, Sahar
dc.contributor.authorBiswas, Deepnarayan
dc.contributor.authorJones, Alfred J. H.
dc.contributor.authorVolckaert, Klara
dc.contributor.authorMarković, Igor
dc.contributor.authorAndreatta, Federico
dc.contributor.authorSankar, Raman
dc.contributor.authorJozwiak, Chris
dc.contributor.authorRotenberg, Eli
dc.contributor.authorBostwick, Aaron
dc.contributor.authorSanders, Charlotte E.
dc.contributor.authorZhang, Yu
dc.contributor.authorKarras, Gabriel
dc.contributor.authorChapman, Richard T.
dc.contributor.authorWyatt, Adam
dc.contributor.authorSpringate, Emma
dc.contributor.authorMiwa, Jill A.
dc.contributor.authorHofmann, Philip
dc.contributor.authorKing, Phil D. C.
dc.contributor.authorLanata, Nicola
dc.contributor.authorChang, Young Jun
dc.contributor.authorUlstrup, Søren
dc.identifier.citationMajchrzak , P , Pakdel , S , Biswas , D , Jones , A J H , Volckaert , K , Marković , I , Andreatta , F , Sankar , R , Jozwiak , C , Rotenberg , E , Bostwick , A , Sanders , C E , Zhang , Y , Karras , G , Chapman , R T , Wyatt , A , Springate , E , Miwa , J A , Hofmann , P , King , P D C , Lanata , N , Chang , Y J & Ulstrup , S 2021 , ' Switching of the electron-phonon interaction in 1T-VSe 2 assisted by hot carriers ' , Physical Review. B, Condensed matter and materials physics , vol. 103 , no. 24 , L241108 .
dc.identifier.otherPURE: 274484770
dc.identifier.otherPURE UUID: 32d6d096-7177-4e1d-aca7-2ea9ca37acea
dc.identifier.otherWOS: 000662305100005
dc.identifier.otherScopus: 85108349551
dc.descriptionFunding: We gratefully acknowledge funding from VILLUM FONDEN through the Young Investigator Program (Grant. No.15375) and the Centre of Excellence for Dirac Materials (Grant. No. 11744), the Danish Council for Independent Research, Natural Sciences under the Sapere Aude program (Grant Nos. DFF-9064-00057B and DFF-6108-00409) and the Aarhus University Research Foundation. This work is also supported by National Research Foundation (NRF) grants funded by the Korean government (nos. NRF-2020R1A2C200373211 and 2019K1A3A7A09033389) and by the International MaxPlanck Research School for Chemistry and Physics of Quantum Materials (IMPRS-CPQM). The authors also acknowledge The Royal Society and The Leverhulme Trust. R.S acknowledges financial support provided by the Ministry of Science and Technology in Taiwan under project number MOST-108-2112-M-001-049-MY2 & MOST 109-2124-M-002-001 and Sinica funded i-MATE financial Support AS-iMATE-109-13. Access to the Artemis Facility was funded by STFC. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231.en
dc.description.abstractWe apply an intense infrared laser pulse in order to perturb the electronic and vibrational states in the three-dimensional charge density wave material 1T-VSe2. Ultrafast snapshots of the light-induced hot carrier dynamics and non-equilibrium quasiparticle spectral function are collected using time- and angle-resolved photoemission spectroscopy. The hot carrier temperature and time-dependent electronic self-energy are extracted from the time-dependent spectral function, revealing that incoherent electron-phonon interactions heat the lattice above the charge density wave critical temperature on a timescale of (200 ± 40)~fs. Density functional perturbation theory calculations establish that the presence of hot carriers alters the overall phonon dispersion and quenches efficient low-energy acoustic phonon scattering channels, which results in a new quasi-equilibrium state that is experimentally observed.
dc.relation.ispartofPhysical Review. B, Condensed matter and materials physicsen
dc.rightsCopyright © 2021 American Physical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at
dc.subjectQC Physicsen
dc.subjectTK Electrical engineering. Electronics Nuclear engineeringen
dc.titleSwitching of the electron-phonon interaction in 1T-VSe2 assisted by hot carriersen
dc.typeJournal itemen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Physics and Astronomyen
dc.contributor.institutionUniversity of St Andrews.Centre for Designer Quantum Materialsen
dc.contributor.institutionUniversity of St Andrews.Condensed Matter Physicsen
dc.description.statusPeer revieweden

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