Numerical simulation of spin-chiralityswitching in multiferroics via intense electromagnon excitations

Masahito Mochizuki*, Naoto Nagaosa

*この研究の対応する著者

研究成果: Conference article査読

2 被引用数 (Scopus)

抄録

Chirality, i.e., the right- and left-handedness of structure, is one of the key concepts in many fields of science including biology, chemistry and physics, and its manipulation is an issue of vital importance. The electron spins in solids can form chiral configurations. In perovskite manganites RMnO3 (R=Tb, Dy,⋯etc), the Mn-spins form a cycloidal structure, which nduces ferroelectric polarization (P) through the relativistic spin-orbit interaction. This magnetism-induced ferroelectricity (multiferroics) and associated infrared-active spin waves (electromagnons) open a promising route to control the spins by purely electric means in a very short time. In this paper, we show theoretically with an accurate spin Hamiltonian for TbMnO3 that a picosecond optical pulse can switch the spin chirality by intensely exciting the electromagnons with a terahertz frequency.

本文言語English
論文番号012082
ジャーナルJournal of Physics: Conference Series
320
DOI
出版ステータスPublished - 2011
外部発表はい
イベントInternational Conference on Frustration in Condensed Matter, ICFCM - Sendai, Japan
継続期間: 2011 1月 112011 1月 14

ASJC Scopus subject areas

  • 物理学および天文学一般

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