Theoretically predicted picosecond optical switching of spin chirality in multiferroics

Masahito Mochizuki, Naoto Nagaosa

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Abstract

We show theoretically with an accurate spin Hamiltonian describing the multiferroic Mn perovskites that the application of the picosecond optical pulse with a terahertz frequency can switch the spin chirality through intensely exciting the electromagnons. There are four states with different spin chiralities, i.e., clockwise and counterclockwise ab/bc-plane spin spirals, and by tuning the strength, shape and length of the pulse, the switching among these states can be controlled at will. Dynamical pattern formation during the switching is also discussed.

Original languageEnglish
Article number147202
JournalPhysical Review Letters
Volume105
Issue number14
DOIs
Publication statusPublished - 2010 Sep 28

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

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