Please use this identifier to cite or link to this item: https://doi.org/10.1103/physrevlett.125.086803
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dc.titleEvidence of Rotational Fröhlich Coupling in Polaronic Trions
dc.contributor.authorTrushin, Maxim
dc.contributor.authorSarkar, Soumya
dc.contributor.authorMathew, Sinu
dc.contributor.authorGoswami, Sreetosh
dc.contributor.authorSahoo, Prasana
dc.contributor.authorWang, Yan
dc.contributor.authorYang, Jieun
dc.contributor.authorLi, Weiwei
dc.contributor.authorMacManus-Driscoll, Judith L
dc.contributor.authorChhowalla, Manish
dc.contributor.authorAdam, Shaffique
dc.contributor.authorVenkatesan, T
dc.date.accessioned2020-08-21T04:06:30Z
dc.date.available2020-08-21T04:06:30Z
dc.date.issued2019-11-19
dc.identifier.citationTrushin, Maxim, Sarkar, Soumya, Mathew, Sinu, Goswami, Sreetosh, Sahoo, Prasana, Wang, Yan, Yang, Jieun, Li, Weiwei, MacManus-Driscoll, Judith L, Chhowalla, Manish, Adam, Shaffique, Venkatesan, T (2019-11-19). Evidence of Rotational Fröhlich Coupling in Polaronic Trions. Physical Review Letters 125 (8). ScholarBank@NUS Repository. https://doi.org/10.1103/physrevlett.125.086803
dc.identifier.issn00319007
dc.identifier.issn10797114
dc.identifier.urihttps://scholarbank.nus.edu.sg/handle/10635/173230
dc.description.abstractElectrons commonly couple through Fr\"ohlich interactions with longitudinal optical phonons to form polarons. However, trions possess a finite angular momentum and should therefore couple instead to rotational optical phonons. This creates a polaronic trion whose binding energy is determined by the crystallographic orientation of the lattice. Here, we demonstrate theoretically within the Fr\"ohlich approach and experimentally by photoluminescence emission that the bare trion binding energy (20 meV) is significantly enhanced by the phonons at the interface between the two-dimensional semiconductor MoS$_2$ and the bulk transition metal oxide SrTiO$_3$. The low-temperature {binding energy} changes from 60 meV in [001]-oriented substrates to 90 meV for [111] orientation, as a result of the counter-intuitive interplay between the rotational axis of the MoS$_2$ trion and that of the SrTiO$_3$ phonon mode.
dc.publisherAmerican Physical Society (APS)
dc.sourceElements
dc.subjectcond-mat.mes-hall
dc.subjectcond-mat.mes-hall
dc.subjectcond-mat.mtrl-sci
dc.typeArticle
dc.date.updated2020-08-21T03:55:52Z
dc.contributor.departmentCENTRE FOR ADVANCED 2D MATERIALS
dc.contributor.departmentDEPT OF ELECTRICAL & COMPUTER ENGG
dc.contributor.departmentNUS NANOSCIENCE & NANOTECH INITIATIVE
dc.contributor.departmentYALE-NUS COLLEGE
dc.description.doi10.1103/physrevlett.125.086803
dc.description.sourcetitlePhysical Review Letters
dc.description.volume125
dc.description.issue8
dc.published.statePublished
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