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Pattern induced phase transition of vortex motion in high- films
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View: Figures


Image of FIG. 1.
FIG. 1.

Sketch of the sample design (inset) and image of a section of the sample depicting one of the Hall contacts and the antidot arrangement. The angle is defined by the nominal direction of the Lorentz force and the orientation of rows of antidots.

Image of FIG. 2.
FIG. 2.

Critical current densities (black dashed line) and (red symbols) for two different orientations of rows of antidots (a) and . is defined by a Hall voltage (blue triangles). The arrows indicate the direction of temperature change during the experiment, the magnetic field was 0.6 mT. The different designs (i.e., different orientation of the rows of antidots) are sketched in the insets, the directions of the current and the different interactions acting on the vortices are indicated.

Image of FIG. 3.
FIG. 3.

Temperature dependence of the microwave transmission coefficient of the design shown in Fig. 2(b) for dc current densities and . The inset depicts the difference of obtained for both currents. The data are recorded at a frequency of 1 GHz, rf-power of −17 dBm at the sample and a magnetic field of 0.6 mT. The positions 1, 2, and mark the onset of vortex nucleation and phase transitions of vortex motion, respectively.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Pattern induced phase transition of vortex motion in high-Tc films