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Imprinting Spatial Helicity Structure of Vector Vortex Beam on Spin Texture in Semiconductors

Jun Ishihara, Takachika Mori, Takuya Suzuki, Sota Sato, Ken Morita, Makoto Kohda, Yuzo Ohno, and Kensuke Miyajima
Phys. Rev. Lett. 130, 126701 – Published 24 March 2023
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Abstract

We present the transfer of the spatially variant polarization of topologically structured light to the spatial spin texture in a semiconductor quantum well. The electron spin texture, which is a circular pattern with repeating spin-up and spin-down states whose repetition rate is determined by the topological charge, is directly excited by a vector vortex beam with a spatial helicity structure. The generated spin texture efficiently evolves into a helical spin wave pattern owing to the spin-orbit effective magnetic fields in the persistent spin helix state by controlling the spatial wave number of the excited spin mode. By tuning the repetition length and azimuthal angle, we simultaneously generate helical spin waves with opposite phases by a single beam.

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  • Received 27 September 2022
  • Revised 17 January 2023
  • Accepted 13 February 2023

DOI:https://doi.org/10.1103/PhysRevLett.130.126701

© 2023 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

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Beaming in a Spin Texture

Published 24 March 2023

Researchers use an optical vortex beam to create a stable pattern of electron spins in a thin layer of semiconductor material.

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Authors & Affiliations

Jun Ishihara1,*, Takachika Mori1, Takuya Suzuki1, Sota Sato2, Ken Morita2, Makoto Kohda3, Yuzo Ohno4, and Kensuke Miyajima1

  • 1Department of Applied Physics, Tokyo University of Science, Tokyo 125-8585, Japan
  • 2Graduate School of Electrical and Electronic Engineering, Chiba University, Chiba 263-8522, Japan
  • 3Department of Materials Science, Tohoku University, Sendai 980-8579, Japan
  • 4Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8573, Japan

  • *j.ishihara@rs.tus.ac.jp

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Issue

Vol. 130, Iss. 12 — 24 March 2023

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