Zobrazeno 1 - 10
of 169
pro vyhledávání: '"Martin, J. I."'
Autor:
Hermosa-Muñoz, J., Hierro-Rodríguez, A., Sorrentino, A., Martín, J. I., Alvarez-Prado, L. M., Rehbein, S., Pereiro, E., Quirós, C., Vélez, M., Ferrer, S.
Soft X-ray magnetic vector tomography has been used to visualize with unprecedented detail and solely from experimental data the 3D magnetic configuration of a ferrimagnetic Gd12Co88/Nd17Co83/Gd24Co76 multilayer with competing anisotropy, exchange an
Externí odkaz:
http://arxiv.org/abs/2109.04064
Autor:
Duan, J., Álvarez-Pérez, G., Tresguerres-Mata, A. I. F., Taboada-Gutiérrez, J., Voronin, K. V., Bylinkin, A., Chang, B., Xiao, S., Liu, S., Edgar, J. H., Martín, J. I., Volkov, V. S., Hillenbrand, R., Martín-Sánchez, J., Nikitin, A. Y., Alonso-González, P.
As one of the most fundamental optical phenomena, refraction between isotropic media is characterized by light bending towards the normal to the boundary when passing from a low- to a high-refractive-index medium. However, in anisotropic media, refra
Externí odkaz:
http://arxiv.org/abs/2103.10740
Autor:
Díaz, J., Gargiani, P., Quirós, C., Redondo, C., Morales, R., Álvarez-Prado, L. M., Martín, J. I., Scholl, A., Ferrer, S., Vélez, M., Valvidares, S. M.
The sensitivity of Circularly polarized X ray Resonant Magnetic Scattering (CXRMS) to chiral asymmetry has been demonstrated. The study was performed on a 2D array of Permalloy (Py) square nanomagnets of 700 nm lateral size arranged in a chess lattic
Externí odkaz:
http://arxiv.org/abs/1907.02016
Autor:
Hierro-Rodriguez, A., Quirós, C., Sorrentino, A., Alvarez-Prado, L. M., Martín, J. I., Alameda, J. M., McVitie, S., Pereiro, E., Vélez, M., Ferrer, S.
The knowledge of how the magnetization looks inside a ferromagnet is often hindered by the limitations of the available experimental methods that are sensitive only to the surface regions or limited in spatial resolution. We report the 3D tomographic
Externí odkaz:
http://arxiv.org/abs/1907.01261
Autor:
Rollano, V., Muñoz-Noval, A., Gomez, A., Bango, F. Valdes, Martin, J. I., Velez, M., Osorio, M. R., Granados, D., Gonzalez, E. M., Vicent, J. L.
Publikováno v:
Nanotechnology 30, 244003 (2019)
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 honeycomb array embedded in a superconducting Nb film. This device is based on
Externí odkaz:
http://arxiv.org/abs/1807.02331
Autor:
Rollano, V., del Valle, J., Gomez, A., Velez, M., Alvarez-Prado, L. M., Quiros, C., Martin, J. I., Osorio, M. R., Granados, D., Gonzalez, E. M., Vicent, J. L.
Publikováno v:
Scientific Reports 8, 12374 (2018)
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 superconducting vortices. The hybrid samples are made of array of nanomagnets em
Externí odkaz:
http://arxiv.org/abs/1802.09633
Autor:
Hierro-Rodriguez, A., Velez, M., Morales, R., Soriano, N., Rodriguez-Rodriguez, G., Alvarez-Prado, L. M., Martin, J. I., Alameda, J. M.
Publikováno v:
Physical Review B 88 (2013) 174411
Magnetic lateral multilayers have been fabricated on weak perpendicular magnetic anisotropy amorphous Nd-Co films in order to perform a systematic study on the conditions for controlled nucleation of topological defects within their magnetic stripe d
Externí odkaz:
http://arxiv.org/abs/1310.5566
Autor:
Ruiz-Valdepeñas, L., Velez, M., Valdes-Bango, F., Alvarez-Prado, L. M., Martin, J. I., Navarro, E., Alameda, J. M., Vicent, J. L.
Publikováno v:
New J. Phys. 15 (2013) 103025
Perpendicular magnetic anisotropy ferromagnetic/ superconducting (FM/SC) bilayers with a labyrinth domain structure are used to study nucleation of superconductivity on a fractal network, tunable through magnetic history. As clusters of reversed doma
Externí odkaz:
http://arxiv.org/abs/1307.4878
Autor:
Hierro-Rodriguez, A., Cid, R., Vélez, M., Rodriguez-Rodriguez, G., Martín, J. I., Álvarez-Prado, L. M., Alameda, J. M.
Publikováno v:
PRL 109, 117202 (2012)
Stripe domains are studied in perpendicular magnetic anisotropy films nanostructured with a periodic thickness modulation that induces the lateral modulation of both stripe periods and inplane magnetization. The resulting system is the 2D equivalent
Externí odkaz:
http://arxiv.org/abs/1209.2281
Autor:
Marconi, V. I., Kolton, A. B., Capitan, J. A., Cuesta, J. A., Perez-Junquera, A., Velez, M., Martin, J. I., Parrondo, J. M. R.
Publikováno v:
Phys. Rev. B 83, 214403 (2011)
The motion of a domain wall in a two dimensional medium is studied taking into account the internal elastic degrees of freedom of the wall and geometrical pinning produced both by holes and sample boundaries. This study is used to analyze the geometr
Externí odkaz:
http://arxiv.org/abs/1012.5471