Ultrafast manipulation of antiferromagnetism of NiO

被引：106

作者：

Duong, NP

Satoh, T

Fiebig, M

机构：

[1] Max Born Inst, D-12489 Berlin, Germany

[2] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.93.117402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Photoexcitation of antiferromagnetic NiO leads to ultrafast reorientation of Ni2+ spins due to change of the magnetic anisotropy. Recovery of the magnetic ground state occurs as coherent oscillation of the antiferromagnetic order parameter between hard- and easy-axis states manifesting itself as quantum beating. The coherence time is similar to1 ns with the beating frequency being determined by the anisotropy energy.

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页码：117402 / 1

页数：4

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