4.8 Article

Spin-Polarized Tunable Photocurrents

期刊

NANO LETTERS
卷 21, 期 7, 页码 3177-3183

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.1c00420

关键词

Spin photocurrents; Topological insulators; Two-dimensional materials; Spin-orbit coupling

资金

  1. ANID (Chile) PFCHA, DOCTORADO NACIONAL/2017 [21171229]
  2. FondeCyT (Chile) [1170917]
  3. EU Horizon 2020 research and innovation program under the MarieSklodowska-Curie Grant [873028]
  4. Abdus Salam International Centre for Theoretical Physics
  5. Simons Foundation
  6. Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET)
  7. Secretaria de Ciencia y Tecnologia de la Universidad Nacional de Cordoba (SECYT-UNC)
  8. Marie Curie Actions (MSCA) [873028] Funding Source: Marie Curie Actions (MSCA)

向作者/读者索取更多资源

Researchers studied the interaction among laser illumination, spin, and topology in a two-dimensional material with spin-orbit coupling using Floquet scattering theory and atomistic models, showing how laser illumination can disrupt topological edge states and generate pure spin photocurrents and spin-polarized charge photocurrents. This paves the way for the generation and control of spin-polarized photocurrents.
Harnessing the unique features of topological materials for the development of a new generation of topological based devices is a challenge of paramount importance. Using Floquet scattering theory combined with atomistic models we study the interplay among laser illumination, spin, and topology in a two-dimensional material with spin-orbit coupling. Starting from a topological phase, we show how laser illumination can selectively disrupt the topological edge states depending on their spin. This is manifested by the generation of pure spin photocurrents and spin-polarized charge photocurrents under linearly and circularly polarized laser illumination, respectively. Our results open a path for the generation and control of spin-polarized photocurrents.

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