Generation, transport, and detection of valley-coupled spin-polarized electrons in WSe2-graphene-topological insulator heterostructure devices

Soonyoung Cha; Doeon Lee; Je-Hyun Kim; Minji Noh; Hyemin Bae; Hoil Kim; Sungjun Cho; Wooyoung Shim; Jun Sung Kim; Dohun Kim; Hyunyong Choi

doi:10.1364/CLEO_QELS.2017.FF2F.7

Conference on Lasers and Electro-Optics
OSA Technical Digest (online) (Optica Publishing Group, 2017),
paper FF2F.7
•https://doi.org/10.1364/CLEO_QELS.2017.FF2F.7

Generation, transport, and detection of valley-coupled spin-polarized electrons in WSe₂-graphene-topological insulator heterostructure devices

Soonyoung Cha, Doeon Lee, Je-Hyun Kim, Minji Noh, Hyemin Bae, Hoil Kim, Sungjun Cho, Wooyoung Shim, Jun Sung Kim, Dohun Kim, and Hyunyong Choi

CLEO: QELS_Fundamental Science 2017

San Jose, California United States
14–19 May 2017
ISBN: 978-1-943580-27-9

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Valley Coherence and Polariton Dynamics in 2D Materials (FF2F)

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S. Cha, D. Lee, J. Kim, M. Noh, H. Bae, H. Kim, S. Cho, W. Shim, J. S. Kim, D. Kim, and H. Choi, "Generation, transport, and detection of valley-coupled spin-polarized electrons in WSe2-graphene-topological insulator heterostructure devices," in Conference on Lasers and Electro-Optics, OSA Technical Digest (online) (Optica Publishing Group, 2017), paper FF2F.7.

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Abstract

We report a novel hybrid heterostructure device that merges the valleytronic and spintronic functionality. We sequentially generate, transport and detect the valley-coupled spin-polarized electrons via non-local photogalvanic effects from WSe₂-graphene-Bi_1,5Sb_0.5Te_1.7Se_1.3.

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