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It was discovered that after a laser pulse irradiation of a thin (0.1 μm) HTSC film which beforehand has been fixed in a strong (500 gauss) external magnetic field, the currents did not disappear but redistributed completely from the range of the laser beam footprint to surroundings without a change of the total number of current vortices. The current enhancement in the surrounding regions show that in the initial state of the film the currents were less than the critical current value Jc which should be on the whole film, according to the well-known Bean model.
© 2000 IEEE
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