Magnetically dependent plasmon drag in permalloy structures

Significant photovoltages are observed in permalloy grating-like structures in response to pulsed laser light illumination. Electrical signals are enhanced at plasmon resonance conditions and show a clear dependence on the magnetic field with a characteristic hysteresis. Estimations show that the effect could not be explained solely by laser-induced heating. Alternative mechanisms are discussed.

Authors:
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Award ID(s):
Publication Date:
NSF-PAR ID:
10231844
Journal Name:
Journal of the Optical Society of America B
Volume:
38
Issue:
6
Page Range or eLocation-ID:
Article No. 2012
ISSN:
0740-3224; JOBPDE
Publisher:
Optical Society of America
1. We address the challenge of finding the optimal laser intensity and wavelength to drive high-energy, strong field rescattering and report the maximum yields of K-shell and$LI$-shell hole creation. Surprisingly, our results show laser-driven rescattering is able to create inner shell holes in all atoms from lithium to uranium with the interaction spanning from the deep IR to x-ray free electron laser sources. The calculated peak rescattering follows a simple scaling with the atomic number and laser wavelength. The results show it is possible to describe the ideal laser intensity and wavelength for general high-energy laser rescattering processes.
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