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Room-Temperature Electron–Hole Liquid in Monolayer MoS2

Yu, Yiling ; Bataller, Alexander W ; Younts, Robert ; Yu, Yifei ; Li, Guoqing ; Puretzky, Alexander A ; Geohegan, David B ; Gundogdu, Kenan ; Cao, Linyou

ACS nano, 2019-09, Vol.13 (9), p.10351-10358 [Periódico revisado por pares]

United States: American Chemical Society

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  • Título:
    Room-Temperature Electron–Hole Liquid in Monolayer MoS2
  • Autor: Yu, Yiling ; Bataller, Alexander W ; Younts, Robert ; Yu, Yifei ; Li, Guoqing ; Puretzky, Alexander A ; Geohegan, David B ; Gundogdu, Kenan ; Cao, Linyou
  • Assuntos: electron−hole plasma ; exciton ; MATERIALS SCIENCE ; molybdenum disulfide ; phase transition ; TMDC ; transitional metal dichalcogenides
  • É parte de: ACS nano, 2019-09, Vol.13 (9), p.10351-10358
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
    USDOE Office of Science (SC), Basic Energy Sciences (BES)
    AC05-00OR22725; ECCS-1508856; DMR 1709934
    National Science Foundation (NSF)
  • Descrição: Excitons in semiconductors are usually noninteracting and behave like an ideal gas, but may condense to a strongly correlated liquid-like state, i.e., electron–hole liquid (EHL), at high density and appropriate temperature. An EHL is a macroscopic quantum state with exotic properties and represents the ultimate attainable charge excitation density in steady states. It bears great promise for a variety of fields such as ultra-high-power photonics and quantum science and technology. However, the condensation of gas-like excitons to an EHL has often been restricted to cryogenic temperatures, which significantly limits the prospect of EHLs for use in practical applications. Herein we demonstrate the formation of an EHL at room temperature in monolayer MoS2 by taking advantage of the monolayer’s extraordinarily strong exciton binding energy. This work demonstrates the potential for the liquid-like state of charge excitations to be a useful platform for the studies of macroscopic quantum phenomena and the development of optoelectronic devices.
  • Editor: United States: American Chemical Society
  • Idioma: Inglês
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