Información del autor
Documentos disponibles escritos por este autor (10)
Añadir el resultado a su cesta Hacer una sugerencia Refinar búsqueda
texto impreso
Jaafar, M. ; Yanes,, R. ; Pérez de Lara, D. ; Chubykalo Fesenko, O. ; Asenjo, A. ; González Herrera, Elvira María ; Anguita, J. V. ; Vázquez, V. ; Vicent López, José Luis | American Physical Society | 2010-02Magnetic vortex dynamics in lithographically prepared nanodots is currently a subject of intensive research, particularly after recent demonstration that the vortex polarity can be controlled by in-plane magnetic field. This has stimulated the p[...]texto impreso
Dinis Vizcaíno, Luis Ignacio ; González Herrera, Elvira María ; Anguita, J. V. ; Parrondo, J. M. R. ; Vicent López, José Luis | American Physical Society | 2007-12A collective mechanism for current reversal in superconducting vortex ratchets is proposed. The mechanism is based on a two-dimensional instability of the ground state (T=0) of the system. We illustrate our results with numerical simulations and[...]texto impreso
Villegas, J. E. ; González Herrera, Elvira María ; González, M. P. ; Anguita, J. V. ; Vicent López, José Luis | American Physical Society | 2005-01A vortex lattice ratchet effect has been investigated in Nb films grown on arrays of nanometric Ni triangles, which induce periodic asymmetric pinning potentials. The vortex lattice motion yields a net dc voltage when an ac driving current is ap[...]texto impreso
Villegas, J. E. ; González Herrera, Elvira María ; González, M. P. ; Nuñez, N. O. ; Anguita, J. V. ; Vicent López, José Luis | Amer Inst Physics | 2006Superconducting Nb thin films were grown on different arrays of triangle-shape metallic islands. The vortex lattice dynamics could be strongly modified by these asymmetric vortex traps. These asymmetric pinning potentials lead to a rectification[...]texto impreso
Dinis Vizcaíno, Luis Ignacio ; González Herrera, Elvira María ; Anguita, J. V. ; Parrondo, J. M. R. ; Vicent López, José Luis | IOP Publishing | 2007-10-09Competition between the vortex lattice and a lattice of asymmetric artificial defects is shown to play a crucial role in ratchet experiments in superconducting films. We present a novel and collective mechanism for current reversal based on a re[...]texto impreso
Dinis Vizcaíno, Luis Ignacio ; González Herrera, Elvira María ; Anguita, J. V. ; Rodríguez Parrondo, Juan Manuel ; Vicent López, José Luis | IOP Publishing | 2007-10-09Competition between the vortex lattice and a lattice of asymmetric artificial defects is shown to play a crucial role in ratchet experiments in superconducting films. We present a novel and collective mechanism for current reversal based on a re[...]texto impreso
texto impreso
Dinis, L. ; Perez de Lara, Daniel ; González Herrera, Elvira María ; Anguita, J. V. ; Parrondo, J. M. R. ; Vicent López, José Luis | IOP Publishing | 2009-07-23A transverse ratchet effect has been measured in magnetic/ superconducting hybrid films fabricated by electron beam lithography and magnetron sputtering techniques. The samples are Nb films grown on top of an array of Ni nanotriangles. Injecting[...]texto impreso
González Herrera, Elvira María ; Núñez Álvarez, Nuria Ofelia ; Anguita, J. V. ; Vicent López, José Luis | American Institute of Physics | 2007-08-06Superconducting Nb films have been grown on top of arrays of Cu nanotriangles. These asymmetric pinning centers strongly modify the vortex lattice dynamics. Two rectification effects have been observed: (i) longitudinal ratchet effect when the i[...]texto impreso
González Herrera, Elvira María ; Anguita, J. V. ; Villegas, J. E. ; Vicent López, José Luis | Elsevier Science BV | 2003-05Ordered arrays of submicrometric Ni lines have been fabricated in sputtered Nb films. Magnetotransport R(H) and (I, V) curves were measured close to the critical temperature using a cross-shape bridge that allows us to apply current in two direc[...]
