Baierl, S. and Mentink, J. H. and Hohenleutner, M. and Braun, L. and Do, T. -M. and Lange, C. and Sell, A. and Fiebig, M. and Woltersdorf, G. and Kampfrath, T. and Huber, R. (2016) Terahertz-Driven Nonlinear Spin Response of Antiferromagnetic Nickel Oxide. PHYSICAL REVIEW LETTERS, 117 (19): 197201. ISSN 0031-9007, 1079-7114
Full text not available from this repository. (Request a copy)Abstract
Terahertz magnetic fields with amplitudes of up to 0.4 Tesla drive magnon resonances in nickel oxide while the induced dynamics is recorded by femtosecond magneto-optical probing. We observe distinct spin-mediated optical nonlinearities, including oscillations at the second harmonic of the 1 THz magnon mode. The latter originate from coherent dynamics of the longitudinal component of the antiferromagnetic order parameter, which are probed by magneto-optical effects of second order in the spin deflection. These observations allow us to dynamically disentangle electronic from lattice-related contributions to magnetic linear birefringence and dichroism-information so far only accessible by ultrafast THz spin control. The nonlinearities discussed here foreshadow physics that will become essential in future subcycle spin switching.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MAGNETIZATION; ULTRAFAST; RESONANCE; DYNAMICS; LIGHT; GENERATION; WAVES; ORDER; FIELD; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Huber > Group Rupert Huber |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 24 Apr 2019 07:39 |
| Last Modified: | 24 Apr 2019 07:39 |
| URI: | https://pred.uni-regensburg.de/id/eprint/4054 |
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