Zero-energy peak and triplet correlations in nanoscale superconductor/ferromagnet/ferromagnet spin valves
نویسندگان
چکیده
منابع مشابه
Reducing the critical switching current in nanoscale spin valves
The current induced magnetization reversal in nanoscale spin valves is a potential alternative to magnetic field switching in magnetic memories. We show that the critical switching current can be decreased by an order of magnitude by strategically distributing the resistances in the magnetically active region of the spin valve. In addition, we simulate full switching curves and predict a new pr...
متن کاملLarge-amplitude coherent spin waves excited by spin-polarized current in nanoscale spin valves
We present spectral measurements of spin-wave excitations driven by direct spin-polarized current in a free layer of nanoscale Ir20Mn80/Ni80Fe20/Cu/Ni80Fe20 spin valves. The measurements reveal that large-amplitude coherent spin-wave modes are excited over a wide range of bias current. The frequency of these excitations exhibits a series of jumps as a function of current due to transitions betw...
متن کاملEvidence for spin selectivity of triplet pairs in superconducting spin valves.
Spin selectivity in a ferromagnet results from a difference in the density of up- and down-spin electrons at the Fermi energy as a consequence of which the scattering rates depend on the spin orientation of the electrons. This property is utilized in spintronics to control the flow of electrons by ferromagnets in a ferromagnet (F1)/normal metal (N)/ferromagnet (F2) spin valve, where F1 acts as ...
متن کاملMagnetization reversal driven by spin-polarized current in exchange-biased nanoscale spin valves
G. Finocchio,1 I. N. Krivorotov,2 L. Torres,3 R. A. Buhrman,4 D. C. Ralph,4 and B. Azzerboni1 1Dipartimento di Fisica della Materia e Tecnologie Fisiche Avanzate, University of Messina, Salita Sperone 31, 98166 Messina, Italy 2Department of Physics and Astronomy, University of California, Irvine, California 92697-4575, USA 3Departamento de Fisica Aplicada, Universidad de Salamanca, Plaza de la ...
متن کاملSignatures of majorana zero modes in spin-resolved current correlations.
We consider a normal lead coupled to a Majorana bound state. We show that the spin-resolved current correlations exhibit unique features which distinguish Majorana bound states from other low-energy resonances. In particular, the spin-up and spin-down currents from a Majorana bound state are anticorrelated at low bias voltages, and become uncorrelated at higher voltages. This behavior is indepe...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2015
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.92.014508