Room-temperature optoelectronic detection of valley-locked spin photocurrent in WSe2-graphene-Bi2Se3 heterostructures

Soonyoung Cha, Minji Noh, Je Hyun Kim, Jangyup Son, Hyemin Bae, Doeon Lee, Hoil Kim, Jekwan Lee, Hoseung Shin, Sangwan Sim, Seunghoon Yang, Chul Ho Lee, Moon Ho Jo, Jun Sung Kim, Dohun Kim, Hyunyong Choi

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Using a lateral WSe2-graphene-Bi2Se3 heterostructure, we generate the valley-locked spin photocurrent in ion-liquid gated WSe2 transistor by the circular photogalvanic effect and extract the spin-polarized current in the Bi2Se3 topological insulator using the spin-momentum locking.

Original languageEnglish
Title of host publicationCLEO
Subtitle of host publicationQELS_Fundamental Science, CLEO_QELS 2018
PublisherOptica Publishing Group (formerly OSA)
ISBN (Print)9781943580422
Publication statusPublished - 2018
EventCLEO: QELS_Fundamental Science, CLEO_QELS 2018 - San Jose, United States
Duration: 2018 May 132018 May 18

Publication series

NameOptics InfoBase Conference Papers
VolumePart F93-CLEO_QELS 2018
ISSN (Electronic)2162-2701


OtherCLEO: QELS_Fundamental Science, CLEO_QELS 2018
Country/TerritoryUnited States
CitySan Jose

Bibliographical note

Publisher Copyright:
© OSA 2018.

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials


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