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We study the nonlocal spin transport in a lateral spin valve with multiple ferromagnetic (FM) electrodes. When two current-injecting and two spin current-detecting electrodes are all ferromagnetic, the number of possible nonlocal spin…

Materials Science · Physics 2015-05-13 Tae-Suk Kim , Hyun-Woo Lee , B. C. Lee

Time-resolved scanning Kerr microscopy (TRSKM) was used to study precessional magnetization dynamics induced by a radio frequency (RF) current within a Al$_2$O$_3$/Py(5 nm)/Pt(6 nm)/Au(150 nm) spin Hall nano-oscillator structure. The Au…

We propose a non-magnetic, pseudospin-based version of a spin valve, in which the pseudospin polarization in neighboring regions of a graphene bilayer is controlled by external gates. Numerical calculations demonstrate a large on-off ratio…

Mesoscale and Nanoscale Physics · Physics 2009-06-18 Pablo San-Jose , Elsa Prada , Edward McCann , Henning Schomerus

We compare ferromagnetic resonance measurements of Permalloy Ni$_{80}$Fe$_{20}$ (Py) films sputtered onto Cu(111) films with and without a graphene (Gr) interlayer grown by chemical vapor deposition before Py deposition. A two-angle…

Mesoscale and Nanoscale Physics · Physics 2015-03-31 Will Gannett , Mark W. Keller , Hans T. Nembach , Thomas J. Silva , Ann Chiaramonti Debay

We present a study of the pulsed current switching characteristics of spin-valve nanopillars with in-plane magnetized dilute permalloy and undiluted permalloy free layers in the ballistic regime at low temperature. The dilute permalloy free…

Power injection uncertainties in distribution power grids, which are mostly induced by aggressive introduction of intermittent renewable sources, may drive the system away from normal operating regimes and potentially lead to the loss of…

Optimization and Control · Mathematics 2018-11-21 Hung D. Nguyen , Krishnamurthy Dvijotham , Suhyoun Yu , Konstantin Turitsyn

An electron interferometer was designed and fabricated via a normal metal/insulator/ferromagnet non-local lateral spin valve with a ring-shaped normal metal/insulator spacer, and spin current interference was observed. A very high spin…

Mesoscale and Nanoscale Physics · Physics 2019-02-14 Ning Lu , Jian-Sheng Xia

We investigated the microwave-induced DC response of spin wave resonance (SWR) in a permalloy thin strip via electrical detection. Our experimental results obtained by sweeping the external field reveal that: 1. the amplitude of SWR signals…

Materials Science · Physics 2013-08-15 Ziqian Wang , Wei Lu , Bogen Wang

A lateral interface connecting two regions with different strengths of the Bychkov-Rashba spin-orbit interaction can be used as a spin polarizer of electrons in two dimensional semiconductor heterostructures. [Khodas \emph{et al.}, Phys.…

Mesoscale and Nanoscale Physics · Physics 2017-05-16 A. Shekhter , M. Khodas , A. M. Finkel'stein

We use the phase-resolved imaging to directly study the nonlinear modification of the wavelength of spin waves propagating in 100-nm thick, in-plane magnetized YIG waveguides. We show that, by using moderate microwave powers, one can…

Mesoscale and Nanoscale Physics · Physics 2022-03-09 S. R. Lake , B. Divinskiy , G. Schmidt , S. O. Demokritov , V. E. Demidov

The nonlocal spin resistance is measured as a function of temperature in a Fe/GaAs spin-injection device. For nonannealed samples that show minority-spin injection, the spin resistance is observed up to room temperature and decays…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 G. Salis , A. Fuhrer , R. R. Schlittler , L. Gross , S. F. Alvarado

A lateral-type spin-photodiode having a refracting facet on a side edge of the device is proposed and demonstrated at room temperature. The light shed horizontally on the side of the device is refracted and introduced directly into a thin…

Applied Physics · Physics 2018-07-04 Ronel Christian Roca , Nozomi Nishizawa , Kazuhiro Nishibayashi , Hiro Munekata

We have studied the spin transport characteristics of a spin metal-oxide-semiconductor field-effect transistor (spin MOSFET), particularly the bias voltage dependence of the electron spin polarization P_S in Si and the magnetoresistance…

Mesoscale and Nanoscale Physics · Physics 2025-09-09 Shoichi Sato , Masaaki Tanaka , Ryosho Nakane

Further development of the field of all-electric spintronics requires the successful integration of spin transport channels with spin injector/generator elements. While with the advent of graphene and related 2D materials high performance…

Mesoscale and Nanoscale Physics · Physics 2016-03-30 Kristina Vaklinova , Alexander Hoyer , Marko Burghard , Klaus Kern

The current induced magnetization reversal in nanoscale spin valves is a potential alternative to magnetic field switching in magnetic memory devices. We show that the critical switching current can be decreased by an order of magnitude by…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Jan Manschot , Arne Brataas , Gerrit E. W. Bauer

The dynamics of magnetic flux distributions across a YBaCuO strip carrying transport current is measured using magneto-optical imaging at 20 K. The current is applied in pulses of 40-5000 ms duration and magnitude close to the critical one,…

Superconductivity · Physics 2009-11-07 A. V. Bobyl , D. V. Shantsev , Y. M. Galperin , T. H. Johansen , M. Baziljevich , S. F. Karmanenko

We present a numerical model of local and nonlocal transport properties in a lateral spin valve structure consisting of two magnetic electrodes in contact with a third perpendicular superconducting electrode. By considering the transport…

Mesoscale and Nanoscale Physics · Physics 2015-06-04 James Luke Webb , Bryan Hickey , Gavin Burnell

We describe a technique, using the current-perpendicular-to-plane (CPP) geometry, to measure the parameter delta(F/N), characterizing flipping of electron spins at a ferromagnetic/non-magnetic (F/N) metallic interface. The technique…

Materials Science · Physics 2015-05-14 B. Dassonneville , R. Acharyya , H. Y. T. Nguyen , R. Loloee , W. P. Pratt , J. Bass

The formation and field response of head-to-head domain walls in curved permalloy wires, fabricated to contain a single anti-notch, have been investigated using Lorentz microscopy. High spatial resolution maps of the vector induction…

The Phasor measurement unit (PMU) measurements are mandatory to monitor the power system's voltage stability margin in an online manner. Monitoring is key to the secure operation of the grid. Traditionally, online monitoring of voltage…

Systems and Control · Electrical Eng. & Systems 2024-12-20 Kishan Prudhvi Guddanti , Amarsagar Reddy Ramapuram Matavalam , Yang Weng