Highly efficient induction of spin polarization by circularly polarized electromagnetic waves in the Rashba spin-orbit systems

Masahito Mochizuki; Keisuke Ihara; Jun Ichiro Ohe; Akihito Takeuchi

doi:10.1063/1.5022262

Highly efficient induction of spin polarization by circularly polarized electromagnetic waves in the Rashba spin-orbit systems

Masahito Mochizuki, Keisuke Ihara, Jun Ichiro Ohe, Akihito Takeuchi

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

We theoretically demonstrate that a rotating electric-field component of circularly polarized microwaves or terahertz light can induce electron-spin polarization within a few picoseconds in a two-dimensional electron system with the Rashba spin-orbit interaction by taking advantage of magnetoelectric coupling. The efficiency turns out to be several orders of magnitude greater than that of conventional methods, indicating high potential of this technique in future spintronics.

Original language	English
Article number	122401
Journal	Applied Physics Letters
Volume	112
Issue number	12
DOIs	https://doi.org/10.1063/1.5022262
Publication status	Published - 2018 Mar 19

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.5022262

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title = "Highly efficient induction of spin polarization by circularly polarized electromagnetic waves in the Rashba spin-orbit systems",

abstract = "We theoretically demonstrate that a rotating electric-field component of circularly polarized microwaves or terahertz light can induce electron-spin polarization within a few picoseconds in a two-dimensional electron system with the Rashba spin-orbit interaction by taking advantage of magnetoelectric coupling. The efficiency turns out to be several orders of magnitude greater than that of conventional methods, indicating high potential of this technique in future spintronics.",

author = "Masahito Mochizuki and Keisuke Ihara and Ohe, {Jun Ichiro} and Akihito Takeuchi",

note = "Funding Information: This research was supported in part by JSPS KAKENHI (Grant Nos. 25870169, 25287088, 17H02924, and 17H01052), Waseda University Grant for Special Research Projects (Project No. 2017S-101), and JST PRESTO (Grant No. JPMJPR132A). J.O. is supported by CREST, JST, and a Grant-in-Aid for Scientific Research (A) (Grant No. 17H01052) from MEXT Japan.",

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doi = "10.1063/1.5022262",

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T1 - Highly efficient induction of spin polarization by circularly polarized electromagnetic waves in the Rashba spin-orbit systems

AU - Mochizuki, Masahito

AU - Ihara, Keisuke

AU - Ohe, Jun Ichiro

AU - Takeuchi, Akihito

N1 - Funding Information: This research was supported in part by JSPS KAKENHI (Grant Nos. 25870169, 25287088, 17H02924, and 17H01052), Waseda University Grant for Special Research Projects (Project No. 2017S-101), and JST PRESTO (Grant No. JPMJPR132A). J.O. is supported by CREST, JST, and a Grant-in-Aid for Scientific Research (A) (Grant No. 17H01052) from MEXT Japan.

PY - 2018/3/19

Y1 - 2018/3/19

N2 - We theoretically demonstrate that a rotating electric-field component of circularly polarized microwaves or terahertz light can induce electron-spin polarization within a few picoseconds in a two-dimensional electron system with the Rashba spin-orbit interaction by taking advantage of magnetoelectric coupling. The efficiency turns out to be several orders of magnitude greater than that of conventional methods, indicating high potential of this technique in future spintronics.

AB - We theoretically demonstrate that a rotating electric-field component of circularly polarized microwaves or terahertz light can induce electron-spin polarization within a few picoseconds in a two-dimensional electron system with the Rashba spin-orbit interaction by taking advantage of magnetoelectric coupling. The efficiency turns out to be several orders of magnitude greater than that of conventional methods, indicating high potential of this technique in future spintronics.

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