Zobrazeno 1 - 10
of 856
pro vyhledávání: '"N. C. Emley"'
Autor:
Robert A. Buhrman, Jordan A. Katine, Patrick M. Braganca, Daniel C. Ralph, Jeffrey R. Childress, D. Mauri, Philip M. Rice, E. Delenia, N. C. Emley
Publikováno v:
IEEE Transactions on Nanotechnology. 8:190-195
Using a self-aligned fabrication process together with multiple-step aligned electron beam lithography, we have developed a nanopillar structure where a third contact can be made to any point within a thin-film multilayer stack. This substantially en
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a032a9c77e3be31b47a6cb4c996a236
https://doi.org/10.1109/tnano.2008.2005187
https://doi.org/10.1109/tnano.2008.2005187
Autor:
Ilya Krivorotov, Robert A. Buhrman, N. C. Emley, Daniel C. Ralph, S. I. Kiselev, Jack C. Sankey
Publikováno v:
Science. 307:228-231
We present time-resolved measurements of gigahertz-scale magnetic dynamics caused by torque from a spin-polarized current. By working in the time domain, we determined the motion of the magnetic moment throughout the process of spin-transfer–driven
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e54e9bac1aa90e186a8608a41c9960aa
https://doi.org/10.1126/science.1105722
https://doi.org/10.1126/science.1105722
Publikováno v:
Journal of Applied Physics. 95:7315-7317
Nanofabrication and thin film deposition techniques have been employed to form Ni nanocontacts that have a three-dimensional point contact geometry with a minimum contact diameter in the range of 1–10 nm. The electron transport through these nanoco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2c3a03f1605e5834f4fccf8cd04d3caf
https://doi.org/10.1063/1.1667450
https://doi.org/10.1063/1.1667450
Publikováno v:
Nano letters. 8(12)
We report a simulation study on interacting ensembles of Co nanomagnets that can perform basic logic operations and propagate logic signals where the state variable is the magnetization direction. Dipole field coupling between individual nanomagnets
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::198e6db89f7945f563dff05b7b4b5b43
https://pubmed.ncbi.nlm.nih.gov/19053798
https://pubmed.ncbi.nlm.nih.gov/19053798
Publikováno v:
2008 International Nano-Optoelectronics Workshop.
Interacting Nano-scale magnetic islands show promise for low-power logic applications. Using anisotropy engineering we demonstrate through micromagnetic simulations a novel universal logic gate capable of signal fanout.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd77fe53eab66c8ca1d689c67eecaa48
https://doi.org/10.1109/inow.2008.4634504
https://doi.org/10.1109/inow.2008.4634504
Autor:
N. L. Gorn, Jack C. Sankey, Daniel C. Ralph, Dmitry Berkov, Robert A. Buhrman, Ilya Krivorotov, N. C. Emley
We present spectral measurements of spin-wave excitations driven by direct spinpolarized current in the free layer of nanoscale Ir20Mn80/Ni80Fe20/Cu/Ni80Fe20 spin valves. The measurements reveal that large-amplitude coherent spin wave modes are excit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1a6ffdd306fe5fa748eeb5cca6c90d1
http://arxiv.org/abs/cond-mat/0703458
http://arxiv.org/abs/cond-mat/0703458
We describe time-domain measurements which provide new information about the large-angle nonlinear dynamics of nanomagnets excited by spin-transfer torque from a spin-polarized current. Sampling-oscilloscope measurements, which average over thousands
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::01566206433d6164cac258342a1b4480
Publikováno v:
INTERMAG 2006 - IEEE International Magnetics Conference.
A current of spin-polarized electrons injected into a metallic nanomagnet exerts torque on the magnetization and may excite magnetization autooscillations. The aim of present work is to study spectral and transient properties of such excitations. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d142a4133dbfc43199d7e8e9b2b6e00
https://doi.org/10.1109/intmag.2006.375412
https://doi.org/10.1109/intmag.2006.375412
Autor:
Ilya Krivorotov, Jack C. Sankey, Robert A. Buhrman, S. I. Kiselev, Patrick M. Braganca, N. C. Emley, Daniel C. Ralph
Publikováno v:
Physical Review B. 72
The spin-transfer torque from a DC spin-polarized current can generate highly-coherent magnetic precession in nanoscale magnetic-multilayer devices. By measuring linewidths of spectra from the resulting resistance oscillations, we argue that the cohe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::935fdc7755b4e3a32effee144b36e3a8
https://doi.org/10.1103/physrevb.72.224427
https://doi.org/10.1103/physrevb.72.224427
Autor:
Daniel C. Ralph, Robert A. Buhrman, S. I. Kiselev, A. G. F. Garcia, Jack C. Sankey, N. C. Emley, Ilya Krivorotov
Using measurements of the spectra of microwave-frequency resistance oscillations, we determine the phase diagram of magnetic excitations caused by torques from DC spin-polarized currents in (thin permalloy)/copper/(thick permalloy) multilayer samples
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5f124147e0abd00ce65cdad80ebb72c9