24 citations · 38 across the 5 of their papers we have counts for
5 papers
Vortex dynamics in type II superconductors under strong pinning conditions
A. U. Thomann, V. B. Geshkenbein, G. Blatter
We study effects of pinning on the dynamics of a vortex lattice in a type II superconductor in the strong-pinning situation and determine the force--velocity (or current--voltage)…
Flux Dependent Crossover Between Quantum and Classical Behavior in a dc-SQUID
Susanne Butz, Alexey K. Feofanov, Kirill G. Fedorov +7
In a coupled system of one classical and one quantum mechanical degree of freedom, the quantum degree of freedom can facilitate the escape of the whole system. Such unusual escape…
Dynamic Aspects of Strong Pinning
A. U. Thomann, V. B. Geshkenbein, G. Blatter
We determine the current--voltage characteristic of type II superconductors in the presence of strong pinning centers. Focusing on a small density of defects, we derive a generic f…
Quantum instability in a dc-SQUID with strongly asymmetric dynamical parameters
A. U. Thomann, V. B. Geshkenbein, G. Blatter
A classical system cannot escape out of a metastable state at zero temperature. However, a composite system made from both classical and quantum degrees of freedom may drag itself…
The dynamically asymmetric SQUID: Münchhausen effect
A. U. Thomann, V. B. Geshkenbein, G. Blatter
We report on a complex zero-temperature decay channel of a classical object in a metastable state coupled to a quantum degree of freedom. This setting can be realized in a dc-SQUID…