Spin oscillations in antiferromagnetic NiO triggered by circularly polarized light

Takuya Satoh, Sung Jin Cho, Ryugo Iida, Tsutomu Shimura, Kazuo Kuroda, Hiroaki Ueda, Yutaka Ueda, B. A. Ivanov, Franco Nori, Manfred Fiebig

Research output: Contribution to journalArticlepeer-review

231 Citations (Scopus)

Abstract

Coherent spin oscillations were nonthermally induced by circularly polarized pulses in the fully compensated antiferromagnet NiO. This effect is attributed to the action of the effective magnetic field generated by an inverse Faraday effect on the spins. The novelty of this mechanism is that spin oscillations are driven by the time derivative of the effective magnetic field which acts even on "pure" antiferromagnets with zero net magnetic moment in the ground state. The measured frequencies (1.07THz and 140GHz) correspond to the out-of-plane and in-plane modes of antiferromagnetic spin oscillations.

Original languageEnglish
Article number077402
JournalPhysical review letters
Volume105
Issue number7
DOIs
Publication statusPublished - Aug 11 2010
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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