Zobrazeno 1 - 10
of 433
pro vyhledávání: '"Macia, F."'
Publikováno v:
Phys. Rev. Applied 13, 044018 (2020)
Non-reciprocal propagation of sound, that is, the different transmission of acoustic waves traveling along opposite directions, is a challenging requirement for the realization of devices like acoustic isolators and circulators. Here, we demonstrate
Externí odkaz:
http://arxiv.org/abs/1911.11072
Publikováno v:
In Computer Methods in Applied Mechanics and Engineering 1 July 2022 397
Publikováno v:
In Journal of Magnetism and Magnetic Materials 15 March 2022 546
Publikováno v:
Phys. Rev. Lett. 115, 127205 (2015)
We report the direct observation of large amplitude spin-excitations localized in a spin-transfer nanocontact using scanning transmission x-ray microscopy. Experiments were conducted using a nanocontact to an ultrathin ferromagnetic multilayer with p
Externí odkaz:
http://arxiv.org/abs/1504.00488
Autor:
Bonetti, S., Kukreja, R., Chen, Z., Macià, F., Hernàndez, J. M., Eklund, A., Backes, D., Frisch, J., Katine, J., Malm, G., Urazhdin, S., Kent, A. D., Stöhr, J., Ohldag, H., Dürr, H. A.
Publikováno v:
Nature Communications 6, Article number: 8889 (2015)
The prediction and realization of magnetic excitations driven by electrical currents via the spin transfer torque effect, enables novel magnetic nano-devices where spin-waves can be used to process and store information. The functional control of suc
Externí odkaz:
http://arxiv.org/abs/1504.00144
Autor:
Vélez, S., Subedi, P., Macià, F., Li, S., Sarachik, M. P., Tejada, J., Mukherjee, S., Christou, G., Kent, A. D.
Publikováno v:
Physical Review B 89, 144408 (2014)
The reversal of spins in a magnetic material as they relax toward equilibrium is accompanied by the release of Zeeman energy which can lead to accelerated spin relaxation and the formation of a well-defined self-sustained propagating spin-reversal fr
Externí odkaz:
http://arxiv.org/abs/1401.6431
Autor:
Subedi, P., Vélez, S., Macià, F., Li, S., Sarachik, M. P., Tejada, J., Mukherjee, S., Christou, G., Kent, A. D.
Publikováno v:
Phys. Rev. Lett. 110, 207203 (2013)
The energy released in a magnetic material by reversing spins as they relax toward equilibrium can lead to a dynamical instability that ignites self-sustained rapid relaxation along a deflagration front that propagates at a constant subsonic speed. U
Externí odkaz:
http://arxiv.org/abs/1301.1900
Publikováno v:
Nanotechnology 22, 095301 (2011)
Magnetization dynamics in nanomagnets has attracted broad interest since it was predicted that a dc-current flowing through a thin magnetic layer can create spin-wave excitations. These excitations are due to spin-momentum transfer, a transfer of spi
Externí odkaz:
http://arxiv.org/abs/1009.4116
Autor:
Villuendas, D., Gheorghe, D., Hernández-Mínguez, A., Macià, F., Hernandez, J. M., Tejada, J., Wijngaarden, R. J.
Publikováno v:
EPL, 84 (2008) 67010
For the first time, the morphology and dynamics of spin avalanches in Mn12-Acetate crystals using magneto-optical imaging has been explored. We observe an inhomogeneous relaxation of the magnetization, the spins reversing first at one edge of the cry
Externí odkaz:
http://arxiv.org/abs/0906.2562
We consider the generalized evolution of compact level sets by functions of their normal vectors and second fundamental forms on a Riemannian manifold M. The level sets of a function $u:M\to\mathbb{R}$ evolve in such a way whenever u solves an equati
Externí odkaz:
http://arxiv.org/abs/0707.2012