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dc.contributor.authorTrott, Matthew James
dc.contributor.authorHooley, Chris
dc.date.accessioned2021-03-02T17:30:06Z
dc.date.available2021-03-02T17:30:06Z
dc.date.issued2021-02-26
dc.identifier272686229
dc.identifier0ffd0c43-c006-4d32-9488-5c32bcababd0
dc.identifier000624638700002
dc.identifier85101732528
dc.identifier.citationTrott , M J & Hooley , C 2021 , ' A potential all-electronic route to the charge-density-wave phase in monolayer vanadium diselenide ' , Communications Physics , vol. 4 , 37 . https://doi.org/10.1038/s42005-021-00544-0en
dc.identifier.issn2399-3650
dc.identifier.otherORCID: /0000-0002-9976-2405/work/90111832
dc.identifier.urihttps://hdl.handle.net/10023/21541
dc.descriptionFunding: MJT acknowledges financial support from the CM-CDT under EPSRC (UK) grant number EP/L015110/1. CAH acknowledges financial support from the EPSRC (UK), grant number EP/R031924/1.en
dc.description.abstractThe transition metal dichalcogenides offer significant promise for the tunable realisation and application of correlated electronic phases. However, tuning their properties requires an understanding of the physical mechanisms underlying their experimentally observed ordered phases, and in particular the extent to which lattice vibrations are a necessary ingredient. Here we present a potential mechanism for charge-density-wave formation in monolayers of vanadium diselenide in which the key role at low energies is played by a combination of electron–electron interactions and nesting. There is a competition between superconducting and density-wave fluctuations as sections of the Fermi surface are tuned to perfect nesting. This competition leads to charge-density-wave order when the effective Heisenberg exchange interaction is comparable to the effective Coulomb repulsion. When all effective interactions are purely repulsive, it results instead in d-wave superconductivity. We discuss the possible role of lattice vibrations in enhancing the effective Heisenberg exchange during the earlier stages of the renormalisation group flow.
dc.format.extent6
dc.format.extent793238
dc.language.isoeng
dc.relation.ispartofCommunications Physicsen
dc.subjectQC Physicsen
dc.subjectTK Electrical engineering. Electronics Nuclear engineeringen
dc.subjectT-DASen
dc.subject.lccQCen
dc.subject.lccTKen
dc.titleA potential all-electronic route to the charge-density-wave phase in monolayer vanadium diselenideen
dc.typeJournal articleen
dc.contributor.sponsorEPSRCen
dc.contributor.institutionUniversity of St Andrews. Centre for Designer Quantum Materialsen
dc.contributor.institutionUniversity of St Andrews. Condensed Matter Physicsen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.identifier.doi10.1038/s42005-021-00544-0
dc.description.statusPeer revieweden
dc.identifier.grantnumberEP/R031924/1en


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