Magneto-optical detection of spin accumulation under the influence of mechanical rotation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

2 Scopus Citations
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Author(s)

  • Atsufumi Hirohata
  • Yuji Baba
  • Benedict A. Murphy
  • Kazuki Nagao
  • Jun-Young Kim

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article number1974
Journal / PublicationScientific Reports
Volume8
Early online date31 Jan 2018
Publication statusE-pub ahead of print - 31 Jan 2018

Link(s)

Abstract

The generation of spin-polarised carriers in a non-magnetic material holds the key to realise highly efficient spintronic devices. Recently, it has been shown that the large spin-orbit coupling can generate spin-polarised currents in noble metals such as tungsten and platinum. Especially, if small samples of such metals are rotated on a plane disc in the presence of a perpendicular magnetic field, the orbital angular momentum is altered leading to a segregation of spin up and spin down electrons, i.e., a spin current in the samples. This is manifested via an induced magnetic moment on the metal. In this letter, magneto-optical Kerr effect (MOKE) is used to detect induced magnetic moments which allows remote measurements on metal samples rotating at 100~210 Hz. Our results confirm the mechanical generation of spin-polarised currents via optical detection of spin accumulation.

Research Area(s)

Citation Format(s)

Magneto-optical detection of spin accumulation under the influence of mechanical rotation. / Hirohata, Atsufumi; Baba, Yuji; Murphy, Benedict A.; Ng, Benny; Yao, Yunqi; Nagao, Kazuki; Kim, Jun-Young.

In: Scientific Reports, Vol. 8, 1974, 31.01.2018.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

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