Sudden critical current drops induced in S/F structures

Sudden Critical Current Drops Induced in S/F Structures

In the search for new physical properties of S/F structures, we have found that the superconductor critical current can be controlled by the domain state of the neighboring ferromagnet. The superconductor is a thin wire of thickness ds ≈ 2ξS. Nb/Co and Nb/Py (Permalloy Ni80Fe20) bilayer structures were grown with a significant magnetic anisotropy. Critical current measurements of Nb/Co structur...

Critical Current Speeds Sf Several Darter Species of the Genus Bbeostom

Lhc Requirements to Measure Fast Current Drops

Vibration-induced climbing of drops.

We report an experimental study of liquid drops moving against gravity, when placed on a vertically vibrating inclined plate, which is partially wetted by the drop. The frequency of vibrations ranges from 30 to 200 Hz, and, above a threshold in vibration acceleration, drops experience an upward motion. We attribute this surprising motion to the deformations of the drop, as a consequence of an u...

Condensation-induced jumping water drops.

Water droplets can jump during vapor condensation on solid benzene near its melting point. This phenomenon, which can be viewed as a kind of micro scale steam engine, is studied experimentally and numerically. The latent heat of condensation transferred at the drop three phase contact line melts the substrate during a time proportional to R (the drop radius). The wetting conditions change and a...