Zobrazeno 1 - 10
of 137
pro vyhledávání: '"Tsunegi, S."'
Autor:
Riou, M., Torrejon, J., Garitaine, B., Araujo, F. Abreu, Bortolotti, P., Cros, V., Tsunegi, S., Yakushiji, K., Fukushima, A., Kubota, H., Yuasa, S., Querlioz, D., Stiles, M. D., Grollier, J.
Publikováno v:
Phys. Rev. Applied 12, 024049 (2019)
The recent demonstration of neuromorphic computing with spin-torque nano-oscillators has opened a path to energy efficient data processing. The success of this demonstration hinged on the intrinsic short-term memory of the oscillators. In this study,
Externí odkaz:
http://arxiv.org/abs/1905.02695
Autor:
Riou, M., Araujo, F. Abreu, Torrejon, J., Tsunegi, S., Khalsa, G., Querlioz, D., Bortolotti, P., Cros, V., Yakushiji, K., Fukushima, A., Kubota, H., Yuasa, S., Stiles, M. D., Grollier, J.
Fabricating powerful neuromorphic chips the size of a thumb requires miniaturizing their basic units: synapses and neurons. The challenge for neurons is to scale them down to submicrometer diameters while maintaining the properties that allow for rel
Externí odkaz:
http://arxiv.org/abs/1904.11236
Autor:
Talatchian, P., Romera, M., Tsunegi, S., Araujo, F. Abreu, Cros, V., Bortolotti, P., Trastoy, J., Yakushiji, K., Fukushima, A., Kubota, H., Yuasa, S., Ernoult, M., Vodenicarevic, D., Hirtzlin, T., Locatelli, N., Querlioz, D., Grollier, J.
Can we build small neuromorphic chips capable of training deep networks with billions of parameters? This challenge requires hardware neurons and synapses with nanometric dimensions, which can be individually tuned, and densely connected. While nanos
Externí odkaz:
http://arxiv.org/abs/1904.11240
Autor:
Lebrun, R., Grollier, J., Bortolotti, P., Cros, V., Hamadeh, A., de Milly, X., Li, Y., de Loubens, G., Klein, O., Tsunegi, S., Kubota, H., Yakushiji, K., Fukushima, A., Yuasa, S.
Publikováno v:
Phys. Rev. B 95, 134444 (2017)
The mutual interaction between the different eigenmodes of a spin-torque oscillator can lead to a large variety of physical mechanisms from mode hopping to multi-mode generation, that usually reduce their performances as radio-frequency devices. To t
Externí odkaz:
http://arxiv.org/abs/1610.10007
Autor:
Lebrun, R., Tsunegi, S., Bortolotti, P., Kubota, H., Jenkins, A. S., Romera, M., Yakushiji, K., Fukushima, A., Grollier, J., Yuasa, S., Cros, V.
Publikováno v:
Nature Communications 8, 15825 (2017)
The concept of spin torque driven high frequency magnetization dynamics has opened up the field of spintronics to non-linear physics, potentially in complex networks of dynamical systems. In the scarce demonstrations of synchronized spin-torque oscil
Externí odkaz:
http://arxiv.org/abs/1601.01247
Autor:
Tsunegi, S., Grimaldi, E., Lebrun, R., Kubota, H., Jenkins, A. S., Yakushiji, K., Fukushima, A., Bortolotti, P., Grollier, J., Yuasa, S., Cros, V.
The self-synchronization of spin torque oscillators is investigated experimentally by re-injecting its radiofrequency (rf) current after a certain delay time. We demonstrate that the emission power and the spectral linewidth are improved for optimal
Externí odkaz:
http://arxiv.org/abs/1509.05583
Autor:
Jenkins, A. S., Lebrun, R., Grimaldi, E., Tsunegi, S., Bortolotti, P., Kubota, H., Yakushiji, K., Fukushima, A., de Loubens, G., Klein, O., Yuasa, S., Cros, V.
Spin-polarised radio-frequency currents, whose frequency is equal to that of the gyrotropic mode, will cause an excitation of the core of a magnetic vortex confined in a magnetic tunnel junction. When the excitation radius of the vortex core is great
Externí odkaz:
http://arxiv.org/abs/1505.05358
Autor:
Lebrun, R., Jenkins, A., Dussaux, A., Locatelli, N., Tsunegi, S., Grimaldi, E., Kubota, H., Bortolotti, P., Yakushiji, K., Grollier, J., Fukushima, A., Yuasa, S., Cros, V.
Publikováno v:
Phys. Rev. Lett. 115, 017201 (2015)
We investigate experimentally the synchronization of a vortex based spin transfer oscillator to an external rf current whose frequency is at multiple integers, as well as half integer, of the oscillator frequency. Through a theoretical study of the l
Externí odkaz:
http://arxiv.org/abs/1502.03485
Autor:
Gaier, O., Hamrle, J., Hillebrands, B., Kallmayer, M., Pörsch, P., Schönhense, G., Elmers, H. J., Fassbender, J., Gloskovskii, A., Jenkins, C. A., Fecher, G. H., Felser, C., Ikenaga, E., Sakuraba, Y., Tsunegi, S., Oogane, M., Ando, Y.
The influence of 30 keV He$^+$ ion irradiation on structural, electronic and magnetic properties of Co$_2$MnSi thin films with B2 order was investigated. It was found, that irradiation with light ions can improve the local chemical order. This provok
Externí odkaz:
http://arxiv.org/abs/0809.3192
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