Phys. Rev. Lett. 93, 117402 (2004) [4 pages]Ultrafast Manipulation of Antiferromagnetism of NiOReceived 12 May 2004; published 10 September 2004 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 ∼1 ns with the beating frequency being determined by the anisotropy energy. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.117402
DOI:
10.1103/PhysRevLett.93.117402
PACS:
78.47.+p, 42.65.Ky, 75.30.Gw, 75.50.Ee
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.