122 citations · 180 across the 6 of their papers we have counts for
6 papers
On temporal correlations in high-resolution frequency counting
Tim Dunker, Harald Hauglin, Ole Petter Rønningen
We analyze noise properties of time series of frequency data from different counting modes of a Keysight 53230A frequency counter. We use a 10 MHz reference signal from a passive h…
Single vortices observed as they enter NbSe
A. A. F. Olsen, H. Hauglin, T. H. Johansen +2
We observe single vortices as they penetrate the edge of a superconductor using a high-sensitivity magneto-optical microscope. The vortices leap across a gap near the edge, a dista…
Observation of hexatic liquid vortex matter in YBa2Cu3O7
Harald Hauglin, Nathan G. Woodard, Gregory P. Lafyatis
An atomic beam probe is used to study the structure and dynamics of quantized supercurrent vortex lines in YBa_{2}Cu_{3}O_{7-?} at temperatures up to within 0.7 K below T_{C}. Here…
Low field vortex matter in YBCO: an atomic beam magnetic resonance study
Harald Hauglin, Nathan G. Woodard, Samuel Dapore-Schwartz +1
We report measurements of the low field structure of the magnetic vortex lattice in an untwinned YBCO single-crystal platelet. Measurements were carried out using a novel atomic be…
Interaction between a magnetic domain wall and a superconductor
L. E. Helseth, P. E. Goa, H. Hauglin +2
The interaction between a magnetic thin film and a superconductor is studied. In particular, the equilibrium width of a Bloch wall is estimated with and without the superconductor.…
Real time magneto-optical imaging of vortices in superconductors
Paal Erik Goa, Harald Hauglin, Michael Baziljevich +3
We demonstrate here real-time imaging of individual vortices in a NbSe2 single crystal using polarized light microscopy. A new high-sensitivity magneto-optical (MO) imaging system…