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Flipping exciton angular momentum with chiral phonons in MoSe2/WSe2 heterobilayers

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10414734" target="_blank" >RIV/00216208:11320/20:10414734 - isvavai.cz</a>

  • Result on the web

    <a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=et0XIPJi2X" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=et0XIPJi2X</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1088/2053-1583/aba567" target="_blank" >10.1088/2053-1583/aba567</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Flipping exciton angular momentum with chiral phonons in MoSe2/WSe2 heterobilayers

  • Original language description

    Optical selection rules in monolayers of transition metal dichalcogenides and of their heterostructures are determined by the conservation of the z-component of the total angular momentum-J(Z)= L-Z+S-Z - associated with the C-3 rotational lattice symmetry which assumes half integer values corresponding, modulo 3, to distinct states. Here we show, based on polarization resolved and low temperature magneto-optical spectroscopy experiments, that the conservation of the total angular momentum in these systems leads to a very efficient exciton-phonon interaction when the coupling is mediated through chiral phonons. We identify these phonons as the Gamma point E&quot; modes which despite carrying angular momentum +/- 1 are able to induce an excitonic spin-flip of -/+ 2 thanks to the C(3)symmetry. These experiments reveal the crucial role of electron-phonon interaction in the carrier dynamics of group 6 transition metal dichalcogenides.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2020

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    2D Materials [online]

  • ISSN

    2053-1583

  • e-ISSN

  • Volume of the periodical

    7

  • Issue of the periodical within the volume

    4

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    7

  • Pages from-to

    041002

  • UT code for WoS article

    000563243400001

  • EID of the result in the Scopus database

    2-s2.0-85092780997