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Autor González Herrera, Elvira María |
Documentos disponibles escritos por este autor (46)
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De Long, LE ; Kryukov, S. A. ; Bosomtwi, A. ; Xu, WT ; González Herrera, Elvira María ; Navarro Palma, Elena ; Villegas, J. E. ; Vicent López, José Luis ; Yu, Ct ; Pechan, MJ | Taylor & Francis Ltd | 2006-06-11The temperature and field dependences of the AC and DC magnetic moment of superconducting and ferromagnetic Nb/Ni multilayers were measured using a SQUID magnetometer with magnetic field applied parallel to the multilayer plane. Periodic kinks i[...]texto impreso
Rollano, V. ; Muñoz Noval, Álvaro ; Gómez, A. ; Valdés Bango, F. ; Martín, J.I. ; Vélez, M. ; Osorio, M. R. ; Granados, D. ; González Herrera, Elvira María ; Vicent López, José Luis | IOP publishing ltd | 2019-06-14We 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 honeycomb array embedded in a superconducting Nb film. This device is bas[...]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
Rollano, V. ; Muñoz Noval, Álvaro ; Valle, J. del ; Menghini, M. ; Ory, M. C. de ; Prieto, J. L. ; Navarro Palma, Elena ; González Herrera, Elvira María ; Vicent López, José Luis | IOP Publishing Ltd. | 2019-11-29A controlled local enhancement of superconductivity yields unexpected modifications in the vortex dynamics. This local enhancement has been achieved by designing an array of superconducting Nb nanostructures embedded in a V superconducting film.[...]texto impreso
Villegas, J. E. ; González Herrera, Elvira María ; Montero, M. I. ; Schuller, Ivan K. ; Vicent López, José Luis | American Physical Society | 2005-08We have studied vortex-lattice dynamics as a function of driving force direction, in superconducting Nb films with periodic pinning arrays of magnetic dots. Square and rectangular symmetry arrays define channels that guide the vortex-lattice mot[...]texto impreso
Sefrioui, Zouhair ; Arias Serna, Diego ; González Herrera, Elvira María ; León Yebra, Carlos ; Santamaría Sánchez-Barriga, Jacobo ; Vicent López, José Luis | American Physical Society | 2001-01-18Epitaxial YBa_(2)Cu_(3)O_(7) thin films, grown by high-pressure dc sputtering, are irradiated with He^(+) ions at 80 keV with doses between 10^(14) and 10^(15) cm^(-2). Irradiation reduces the critical temperature but it does not modify the carr[...]texto impreso
Sefrioui, Zouhair ; Arias, D. ; González Herrera, Elvira María ; León, C. ; Santamaría Sánchez-Barriga, Jacobo ; Vicent López, José Luis | American Physical Society | 2001-02-01Epitaxial YBa_2Cu_3O_7 thin films, grown by high-pressure de sputtering, an irradiated with He^(+) ions at 80 keV with doses between 10_(14) and 10_(15) cm^(-2). Irradiation reduces the critical temperature but it does not modify the carrier con[...]texto impreso
Puig, T. ; Galante, F. ; González Herrera, Elvira María ; Vicent López, José Luis ; Martínez, B. ; Obradors, X. | American Physical Society | 1999-11-01The angular dependence of the in-plane resistivity ?(T,H, ?) of melt textured YBa_2Cu_3O_7/Y_2BaCuO_5 composites has been measured in a large range of magnetic fields and temperatures and from them, the intrinsic anisotropy of the superconductin[...]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[...]texto impreso
Villegas, J. E. ; González Herrera, Elvira María ; Sefrioui, Z. ; Santamaría Sánchez-Barriga, Jacobo ; Vicent López, José Luis | American Physical Society | 2005-11Magnetotransport properties have been used to investigate vortex phases in Nb films with periodic arrays of magnetic pinning centers. This kind of samples show a continuous glass transition similar to that observed in Nb plain films, but the per[...]texto impreso
Gómez, A. ; Valle Granda, Javier del ; González Herrera, Elvira María ; Chiliotte, C. E. ; Carreira, S. J. ; Bekeris, V. ; Prieto, J. L. ; Schuller, Ivan K. ; Vicent López, José Luis | IOP publishing ltd | 2014Hybrid magnetic arrays embedded in superconducting films are ideal systems to study the competition between different physical (such as the coherence length) and structural length scales such as are available in artificially produced structures.[...]texto impreso
Pérez de Lara, D. ; Alija, A. ; González Herrera, Elvira María ; Vélez, M. ; Martín, J. I. ; Vicent López, José Luis | American Physical Society | 2010-11-03Arrays of Ni nanodots embedded in Nb superconducting films have been fabricated by sputtering and electron-beam lithography techniques. The arrays are periodic triangular lattices of circular Ni dots arranged in a kagomélike pattern with broken [...]texto impreso
Pérez de Lara, David ; Erekhinsky, M. ; González Herrera, Elvira María ; Rosen, Y. J. ; Schuller, Ivan K. ; Vicent López, José Luis | American Physical Society | 2011-05-09Triangular arrays of Ni nanotriangles embedded in superconducting Nb films exhibit unexpected dynamical vortex effects. Collective pinning with a vortex-lattice configuration different from the expected fundamental triangular "Abrikosov state" i[...]texto impreso
Sefrioui, Zouhair ; Arias Serna, Diego ; León Yebra, Carlos ; Santamaría Sánchez-Barriga, Jacobo ; González Herrera, Elvira María ; Vicent López, José Luis ; Prieto, P. | American Physical Society | 2004-08-09We investigate the zero-magnetic-field dynamic scaling in Bi_(2)Sr_(2)CaCu_(2)O_(8) thin films from nonlinear currentvoltage sI-Vd characteristics and by using the concavity criterion recently proposed by Strachan et al. [Phys. Rev. Lett. 87, 06[...]