Showing 2004 · cond-mat.supr-conShow all

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cond-mat.supr-con2004★ 64 cited

Enhanced vortex pinning by a composite antidot lattice in a superconducting Pb film

A. V. Silhanek, L. Van Look, R. Jonckheere +3

The use of artificial defects is known to enhance the superconducting critical parameters of thin films. In the case of conventional superconductors, regular arrays of submicron ho…

cond-mat.supr-con2004★ 61 cited

Dendritic flux penetration in Pb films with a periodic array of antidots

M. Menghini, R. J. Wijngaarden, A. V. Silhanek +2

We explore the flux-jump regime in type-II Pb thin films with a periodic array of antidots by means of magneto-optical measurements. A direct visualization of the magnetic flux dis…

cond-mat.supr-con2004★ 29 cited

Nucleation of superconductivity in a mesoscopic loop of varying width

M. Morelle, D. S. Golubovic, V. V. Moshchalkov

We study the evolution of the superconducting state in a perforated disk by varying the size of the hole. The superconducting properties are investigated by means of transport meas…

cond-mat.supr-con2004★ 31 cited

Experimental determination of the number of flux lines trapped by micro-holes in superconducting samples

A. V. Silhanek, S. Raedts, M. J. Van Bael +1

The influence of a periodic landscape of pinning sites on the vortex dynamics in Pb thin films is explored by ac-susceptibility measurements. For different amplitudes h of the ac-d…

cond-mat.supr-con2004★ 21 cited

Paramagnetic reentrance of the ac-screening: Evidence of vortex avalanches in Pb thin films

A. V. Silhanek, S. Raedts, V. V. Moshchalkov

We have studied the influence of a square array of pinning centers on the dynamics of vortex avalanches in Pb thin films by means of ac- and dc- magnetization measurements. Close t…

cond-mat.supr-con2004★ 38 cited

Influence of the sample geometry on the vortex matter in superconducting microstructures

M. Morelle, J. Bekaert, V. V. Moshchalkov

The dependence of the vortex penetration and expulsion on the geometry of mesoscopic superconductors is reported. Hall magnetometry measurements were performed on a superconducting…

cond-mat.supr-con2004★ 69 cited

Flux pinning properties of superconductors with an array of blind holes

S. Raedts, A. V. Silhanek, M. J. Van Bael +1

We performed ac-susceptibility measurements to explore the vortex dynamics and the flux pinning properties of superconducting Pb films with an array of micro-holes (antidots) and n…

cond-mat.supr-con2004★ 15 cited

Magnetic phase shifter for superconducting qubit

D. S. Golubovic, W. V. Pogosov, M. Morelle +1

We have designed and investigated a contactless magnetic phase shifter for flux-based superconducting qubits. The phase shifter is realized by placing a perpendicularly magnetized…

cond-mat.supr-con2004★ 8 cited

Dynamic Regimes in Films with a Periodic Array of Antidots

A. V. Silhanek, S. Raedts, M. J. Van Bael +1

We have studied the dynamic response of Pb thin films with a square array of antidots by means of ac susceptibility chi(T,H) measurements. At low enough ac drive amplitudes h, vort…