Publikation:

Terahertz-Driven Nonlinear Spin Response of Antiferromagnetic Nickel Oxide

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2016

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Baierl, Sebastian
Mentink, Johan H.
Hohenleutner, Matthias
Braun, L.
Do, T.-M.
Lange, Christoph
Fiebig, Manfred
Woltersdorf, Georg
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https://doi.org/10.1103/PhysRevLett.117.197201
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Physical Review Letters. 2016, 117(19), 197201. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.117.197201

Zusammenfassung

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.

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ISO 690BAIERL, Sebastian, Johan H. MENTINK, Matthias HOHENLEUTNER, L. BRAUN, T.-M. DO, Christoph LANGE, Alexander SELL, Manfred FIEBIG, Georg WOLTERSDORF, Rupert HUBER, 2016. Terahertz-Driven Nonlinear Spin Response of Antiferromagnetic Nickel Oxide. In: Physical Review Letters. 2016, 117(19), 197201. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.117.197201
BibTex
@article{Baierl2016Terah-37779,
  year={2016},
  doi={10.1103/PhysRevLett.117.197201},
  title={Terahertz-Driven Nonlinear Spin Response of Antiferromagnetic Nickel Oxide},
  number={19},
  volume={117},
  issn={0031-9007},
  journal={Physical Review Letters},
  author={Baierl, Sebastian and Mentink, Johan H. and Hohenleutner, Matthias and Braun, L. and Do, T.-M. and Lange, Christoph and Sell, Alexander and Fiebig, Manfred and Woltersdorf, Georg and Huber, Rupert},
  note={Article Number: 197201}
}
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