115 citations · 229 across the 4 of their papers we have counts for
4 papers
Effect of quantum noise on Coulomb blockade in normal tunnel junctions at high voltages
J. S. Penttila, U. Parts, P. J. Hakonen +2
We have investigated asymptotic behavior of normal tunnel junctions at voltages where even the best ohmic environments start to look like RC transmission lines. In the experiments,…
Coexistence of Single and Double-Quantum Vortex Lines
Ü. Parts, V. V. Avilov, J. H. Koivuniemi +4
We discuss the configurations in which singly and doubly quantized vortex lines may coexist in a rotating superfluid. General principles of energy minimization lead to the conclusi…
"Superconductor-Insulator transition" in a single Josephson junction
J. S. Penttila, U. Parts, P. J. Hakonen +2
VI-curves of resistively shunted single Josephson junctions with different capacitances and tunneling resistances are found to display a crossover between two types of VI-curves: o…
Critical Velocity of Vortex Nucleation in Rotating Superfluid 3He-A
V. M. H. Ruutu, J. Kopu, M. Krusius +4
We have measured the critical velocity v_c at which 3He-A in a rotating cylinder becomes unstable against the formation of quantized vortex lines with continuous (singularity-free)…