Vortex Trapping in Hybrid Magnetometers (2008)
Kuit, K. H., Kirtley, J. R., Rogalla, H., Flokstra, J.
Hybrid magnetometers based on a normal conducting sensor and a superconducting flux concentrator have been investigated. When this sensor is operated in an unshielded environment flux vortices can be...
Vortex trapping and expulsion in thin-film type-II superconducting strips (2008)
Kuit, K. H., Kirtley, J. R., Clem, J. R., Rogalla, H., Flokstra, J.
Vortex trapping is investigated in thin-film strips of superconducting material. We present a model for the critical field above which vortex trapping occurs in these strips. This model includes the...
Vortex trapping and expulsion in thin-film YBa2Cu3O7â strips (2008)
Kuit, K.H., Kirtley, J.R., Molenaar, C.G., Roesthuis, F.J.G., Troeman, A.G.P., ...
A scanning superconducting quantum interference device microscope was used to image vortex trapping asa function of the magnetic induction during cooling in thin-film YBa2Cu3O7â YBCO strips for...
Kawabata, S., Golubov, A.A., Verwijs, C.J.M., Hilgenkamp, H., Kirtley, J.R.
We have theoretically investigated macroscopic quantum tunneling (MQT) and the influence of nodal quasiparticles and zero energy bound states (ZESs) on MQT in s-wave/d-wave hybrid Josephson...
Upper limit on spontaneous supercurrents in Sr2RuO4 (2007)
Kirtley, J.R., Kallin, C., Hicks, C.W., Liu, Y., Moler, K.A., ...
It is widely believed that the perovskite Sr2RuO4 is an unconventional superconductor with broken time-reversal symmetry. It has been predicted that superconductors with broken time-reversal symmetry...
Antiferromagnetic ordering in arrays of superconducting pi-rings (2005)
Kirtley, J.R., Tsuei, C.C., Ariando, A., Smilde, H.J.H., Hilgenkamp, H.
We report experiments in which continuous YBa2Cu3O7¿delta-Nb junctions with internal sign changes in the Josephson coupling, as well as one-dimensional (1D) and two-dimensional (2D) arrays of...
Observation of splintered Josephson vortices at grain boundaries in YBa2Cu3O7-d (2002)
Mints, R.G., Papiashvili, I., Kirtley, J.R., Hilgenkamp, H., Hammerl, G., Mannhart, J.
We have directly observed well-separated Josephson vortex splinters with unquantized magnetic flux at asymmetric 45° grain boundaries in YBa2Cu3O7-¿ films by imaging magnetic flux with scanning...