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Interaction of picosecond optical pulses with high Tc superconducting films (1989)

Donaldson, W. R. ; Kadin, A. M. ; Ballentine, P. H. ; [et al.]

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 54 (1989), S. 2470-2472

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: Infrared pulses (1.06 μm wavelength, ≈150 ps long) from a Nd:YAG laser illuminated a superconducting YBa2Cu3O7 granular film, 0.7 μm thick. This caused the film to switch from the superconducting to the normal (resistive) state in less than 2 ns, followed by a much slower recovery ∼1 μs. The initial fast switching may be explained by nonequilibrium hot-electron energy transfer from the top absorbing layer (≈100 nm thick) through the film, followed by an essentially bolometric response and cooldown via equilibrium thermal conduction out of the film.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.101538

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