Magnetically dependent plasmon drag in permalloy structures

• DOI: 10.1364/josab.419818
• Publication Date: 2021-05-10T20:31:43Z
• Authors: Mohammad Shahabuddin; David W. Keene; Maxim Durach; Vladimir S. Posvy...; Vadim A. Atsarkin; Natalia Noginova
• Keywords: Condensed Matter - Mesoscale and Nanoscale Physics; Mesoscale and Nanoscale Physics (cond-mat.mes-hall); 0103 physical sciences; FOS: Physical sciences; 01 natural sciences; Physics - Optics; Optics (physics.optics)

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.