Publikation: Dynamics of the dendritic flux instability in YBa2Cu3O7-delta films
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We have studied the dynamics of magnetic-flux avalanches in superconducting YBa2Cu3O7-δ films by means of a fast magneto-optic pump-probe technique. Two regimes of propagation are found: in regime I, directly after the nucleation of the avalanches by a femtosecond laser pulse, the velocity v of the flux dendrites depends strongly on the magnetic field, and values of v up to 180km/s are observed. Within some ten nanoseconds after nucleation regime II is reached, where the propagation velocity has dropped by one order of magnitude and is nearly independent of sample temperature and magnetic field. Comparison with previous experiments on flux jumps in superconductors shows good qualitative agreement.
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BOLZ, Uwe, Björn BIEHLER, Daniel SCHMIDT, Bernd-Uwe RUNGE, Paul LEIDERER, 2003. Dynamics of the dendritic flux instability in YBa2Cu3O7-delta films. In: Europhysics Letters. 2003, 64(4), pp. 517-523. Available under: doi: 10.1209/epl/i2003-00261-yBibTex
@article{Bolz2003Dynam-5163, year={2003}, doi={10.1209/epl/i2003-00261-y}, title={Dynamics of the dendritic flux instability in YBa2Cu3O7-delta films}, number={4}, volume={64}, journal={Europhysics Letters}, pages={517--523}, author={Bolz, Uwe and Biehler, Björn and Schmidt, Daniel and Runge, Bernd-Uwe and Leiderer, Paul} }
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