7 papers
Comparison of Josephson vortex flow transistors with different gate line configurations
J. Schuler, S. Weiss, T. Bauch +3
We performed numerical simulations and experiments on Josephson vortex flow transistors based on parallel arrays of YBa2Cu3O(7-x) grain boundary junctions with a cross gate-line al…
Transport and Noise Characteristics of Submicron High-Temperature Superconductor Grain-Boundary Junctions
F. Herbstritt, T. Kemen, L. Alff +2
We have investigated the transport and noise properties of submicron YBCO bicrystal grain-boundary junctions prepared using electron beam lithography. The junctions show an increas…
Voltage-flux-characteristics of asymmetric dc SQUIDs
J. Mueller, S. Weiss, R. Gross +2
We present a detailed analysis of voltage-flux V(Phi)-characteristics for asymmetric dc SQUIDs with various kinds of asymmetries. For finite asymmetry alpha_I in the critical curre…
Ratchet effect in dc SQUIDs
S. Weiss, D. Koelle, J. Mueller +2
We analyzed voltage rectification for dc SQUIDs biased with ac current with zero mean value. We demonstrate that the reflection symmetry in the 2-dimensional SQUID potential is bro…
Anomalous Low Temperature Behavior of Superconducting Nd(1.85)Ce(0.15)CuO(4-y)
L. Alff, S. Meyer, S. Kleefisch +5
We have measured the temperature dependence of the in-plane London penetration depth lambda(T) and the maximum Josephson current Ic(T) using bicrystal grain boundary Josephson junc…
Observation of Bound Surface States in Grain Boundary Junctions of High Temperature Superconductors
L. Alff, A. Beck, R. Gross +6
We have performed a detailed study of the tunneling spectra of bicrystal grain boundary junctions (GBJs) fabricated from the HTS YBCO, BSCCO, LSCO, and NCCO. In all experiments the…