150 citations · 231 across the 15 of their papers we have counts for
12 papers · 1 filter
Enhancement of vortex liquid phase and reentrant behavior in NiBi3 single crystals
V. Rollano, M. C. de Ory, A. Gomez +12
We investigated the vortex phase diagram of needle shaped high quality NiBi3 single crystals by transport measurements. The current is applied along the crystalline b-axis of this…
Realization of macroscopic ratchet effect based on nonperiodic and uneven potentials
V. Rollano, A. Gomez, A. Muñoz-Noval +5
Ratchet devices allow turning an ac input signal into a dc output signal. A ratchet device is set by moving particles driven by zero averages forces on asymmetric potentials. Hybri…
Little-Parks Effect Governed by Magnetic Nanostructures with Out-of-Plane Magnetization Little-Parks Effect Governed by Magnetic Nanostructures with Out-of-Plane Magnetization
M. C. de Ory, V. Rollano, A. Gomez +4
Little-Parks effect names the oscillations in the superconducting critical temperature as a function of the magnetic field. This effect is related to the geometry of the sample. In…
Vortex dynamics controlled by local superconducting enhancement
V. Rollano, A. Gomez, A. Muñoz-Noval +7
A controlled local enhancement of superconductivity yields unexpected modifications in the vortex dynamics. This local enhancement has been achieved by designing an array of superc…
Topologically protected superconducting ratchet effect generated by spin-ice nanomagnets
V. Rollano, A. Muñoz-Noval, A. Gomez +7
We have designed, fabricated and tested a robust superconducting ratchet device based on topologically frustrated spin-ice nanomagnets. The device is made of a magnetic Co honeycom…
Magnetic order and disorder in nanomagnets probed by superconducting vortices
V. Rollano, J. del Valle, A. Gomez +8
We have studied two nanomagnet systems with strong (Co/Pd multilayers) and weak (NdCo alloy films) stray magnetic fields by probing the out-of-plane magnetic states with supercondu…
Force-free state in a superconducting single crystal and angle-dependent vortex helical instability
J. del Valle, A. Gomez, E. M. Gonzalez +3
Superconducting 2H-NbSe2 single crystals show intrinsic low pinning values. Therefore, they are ideal materials with which to explore fundamental properties of vortices. (V, I) cha…
Effective penetration length and interstitial vortex pinning in superconducting films with regular arrays of defects
J. del Valle, A. Gomez, E. M. Gonzalez +1
In order to compare magnetic and non-magnetic pinning we have nanostructured two superconducting films with regular arrays of pinning centers: Cu (non-magnetic) dots in one case, a…
Different approaches to generate matching effects using arrays in contact with superconducting films
J. del Valle, A. Gomez, J. Luis- Hita +3
Superconducting films in contact with non-superconducting regular arrays can exhibit commensurability effects between the vortex lattice and the unit cell of the pinning array. The…
Superconducting/magnetic three state nanodevice for memory and reading applications
J. del Valle, A. Gomez, E. M. Gonzalez +3
We present a simple nanodevice that can operate in two modes: i) three-state memory and ii) reading device. The nanodevice is fabricated with an array of ordered triangular-shaped…
Vortex pinning vs superconducting wire network: origin of periodic oscillations induced by applied magnetic fields in superconducting films with arrays of nanomagnets
A. Gomez, J. del Valle, E. M. Gonzalez +6
Hybrid magnetic arrays embedded in superconducting films are ideal systems to study the competition between different physical (such as the coherence length) and structural length…
Control of dissipation in superconducting films by magnetic stray fields
A. Gomez, D. A. Gilbert, E. M. Gonzalez +2
Hybrid superconducting/magnetic nanostructures on Si substrates have been built with identical physical dimensions but different magnetic configurations. By constructing arrays bas…