Electric dipole spin resonance in a quantum spin dimer system driven by magnetoelectric coupling

Shojiro Kimura, Masashige Matsumoto, Mitsuru Akaki, Masayuki Hagiwara, Koichi Kindo, Hidekazu Tanaka

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

In this Rapid Communication, we propose a mechanism for electric dipole active spin resonance caused by spin-dependent electric polarization in a quantum spin gapped system. This proposal was successfully confirmed by high-frequency electron spin resonance (ESR) measurements of the quantum spin dimer system KCuCl3. ESR measurements by an illuminating linearly polarized electromagnetic wave reveal that the optical transition between the singlet and triplet states in KCuCl3 is driven by an ac electric field. The selection rule of the observed transition agrees with the calculation by taking into account spin-dependent electric polarization. We suggest that spin-dependent electric polarization is effective in achieving fast control of quantum spins by an ac electric field.

Original languageEnglish
Article number140406
JournalPhysical Review B
Volume97
Issue number14
DOIs
Publication statusPublished - 2018 Apr 30

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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