Spin dynamics triggered by sub-terahertz magnetic field pulses

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Current pulses of up to 20 A and as short as 3 ps are generated by a low temperature grown GaAs (lt-GaAs) photoconductive switch and guided through a coplanar waveguide, resulting in a 0.6 Tesla terahertz (THz) magnetic field pulse. The pulse length is directly calibrated using photocurrent autocorrelation. Magnetic excitations in Fe microstructures are studied by time-resolved Kerr spectroscopy and compared with micromagnetic simulations. A response within less than 10 ps to the THz electromagnetic field pulse is found.
12 pages, 4 figures, submitted to J. Appl. Phys, changes made with regard to review process

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Other Condensed Matter

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http://salesiana.dossiersoluciones.com/handle/123456789/209322

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0711.3427
 http://arxiv.org/abs/0711.3427
 J. Appl. Phys. 103, 123905 (2008)
 doi:10.1063/1.2940734

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arXiv