Zobrazeno 1 - 10
of 424
pro vyhledávání: '"A. Roldán-Molina"'
Publikováno v:
Phys. Rev. B 102, 104411 (2020)
In this work, we report the theoretical possibility of generating magnon polaron excitations through a space-varying magnetic field. The spatial dependence of the magnetic field in the Zeeman interaction gives rise to a magnon-phonon coupling when a
Externí odkaz:
http://arxiv.org/abs/2006.09839
Autor:
J. Flores-Farías, R. A. Gallardo, F. Brevis, Alejandro Roldán-Molina, D. Cortés-Ortuño, P. Landeros
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-11 (2022)
Abstract The magnonic band structure of two-dimensional chiral magnonic crystals is theoretically investigated. The proposed metamaterial involves a three-dimensional architecture, where a thin ferromagnetic layer is in contact with a two-dimensional
Externí odkaz:
https://doaj.org/article/8d065e8926314f25b8ebccbd28d1a02f
Akademický článek
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Autor:
Lina María Roldán Delfino, Sandra Milena León Ramírez, Luis Fernando Roldán Molina, Sebastian Fernando Niño Ramírez, Andrés Felipe Arismendy López de Mesa, Elsie Janeth Bejarano Rengifo, Jorge Yamid Bolaños Ruales, Sara Márquez Molina, Edilberto Elias Nuñez Cabarcas, Hilda María Pérez Useche, Antonio José Restrepo Pelaez, Carlos Ever Restrepo Tirado, María Adelaida Saffon Abad, Julio Eduardo Zuleta Muñoz, Juan Nicolás Zuluaga Aguilar
Publikováno v:
Revista Colombiana de Gastroenterología, Vol 38, Iss 3 (2023)
Objetivo: establecer la relación entre el consumo de alimentos considerados como factores de riesgo para cáncer gástrico y la presencia de cambios tróficos de la mucosa gástrica. Materiales y métodos: estudio de corte transversal. Se incluyer
Externí odkaz:
https://doaj.org/article/7dd552b900db4845b8a7d7dabda5d4fa
Autor:
Gallardo, Rodolfo A., Schneider, Tobias, Roldán-Molina, Alejandro, Langer, Manuel, Núñez, Álvaro S., Lenz, Kilian, Lindner, Jürgen, Landeros, Pedro
Publikováno v:
Physical Review B 97, 174404 (2018)
Symmetry and localization properties of defect modes of a one-dimensional bi-component magnonic superlattice are theoretically studied. The magnonic superlattice can be seen as a periodic array of nanostripes, where stripes with different width, term
Externí odkaz:
http://arxiv.org/abs/1812.00897
Publikováno v:
Phys. Rev. Lett. 122, 037203 (2019)
We show that an inhomogeneity in the spin-transfer torques in a metallic ferromagnet under suitable conditions strongly amplifies incoming spin waves. Moreover, at nonzero temperatures the incoming thermally occupied spin waves will be amplified such
Externí odkaz:
http://arxiv.org/abs/1807.07312
Autor:
Sluka, V., Schneider, T., Gallardo, R. A., Kakay, A., Weigand, M., Warnatz, T., Mattheis, R., Roldan-Molina, A., Landeros, P., Tiberkevich, V., Slavin, A., Schütz, G., Erbe, A., Deac, A., Lindner, J., Raabe, J., Fassbender, J., Wintz, S.
Spin waves offer intriguing novel perspectives for computing and signal processing, since their damping can be lower than the Ohmic losses in conventional CMOS circuits. For controlling the spatial extent and propagation of spin waves on the actual c
Externí odkaz:
http://arxiv.org/abs/1807.00897
Autor:
Gallardo, R. A., Cortés-Ortuño, D., Schneider, T., Roldán-Molina, A., Ma, Fusheng, Troncoso, R. E., Lenz, K., Fangohr, H., Lindner, J., Landeros, P.
Publikováno v:
Phys. Rev. Lett. 122, 067204 (2019)
Periodically patterned metamaterials are known for exhibiting wave properties similar to the ones observed in electronic band structures in crystal lattices. In particular, periodic ferromagnetic materials are characterized by the presence of bands a
Externí odkaz:
http://arxiv.org/abs/1806.08333
Autor:
Langer, Manuel, Gallardo, Rodolfo A., Schneider, Tobias, Stienen, Sven, Roldán-Molina, Alejandro, Yuan, Ye, Lenz, Kilian, Lindner, Jürgen, Landeros, Pedro, Fassbender, Jürgen
Publikováno v:
Phys. Rev. B 99, 024426 (2019)
Spin-wave modes are studied under the gradual transition from a flat thin film to a 'full' (one-dimensional) magnonic crystal. For this purpose, the surface of a pre-patterned 36.8 nm thin permalloy film was sequentially ion milled resulting in magno
Externí odkaz:
http://arxiv.org/abs/1702.05675
Akademický článek
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