Fig. 2: Optical controlling bistability.
From: Reconfigurable memlogic long wave infrared sensing with superconductors
a Different I-V hysteretic curves under the illumination of infrared light (\(820\,{{\rm{cm}}}^{-1}\)) with different intensity at \(6.5\,{\rm{K}}\). The green, red and black curves represent the light intensity of \(0.66\,{\rm{mW}}\,{{\rm{cm}}}^{-2}\) (light 2), \(0.34\,{\rm{mW}}\,{{\rm{cm}}}^{-2}\) (light 1) and 0 (light 0), respectively. Inset: Schematic depiction of a plasmonic absorber. b Resistance switching through light pulse (duration of \(0.3\,{\rm{s}}\)), read at current of \(125\,{\rm{\mu }}{\rm{A}}\). c The experimental data and fitting model for retrapping current and critical current, which decrease as the light power increases. d The temperature and current dependence of responsivity. The lower temperature, the higher responsivity. Inset: Absorption spectrum of the sensor shows the metamaterials resonance frequency at \(820\,{{\rm{cm}}}^{-1}\) (wavelength \(12.2\,{\rm{\mu }}{\rm{m}}\))
