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We theoretically study the motion of a magnetic domain wall induced by transverse elastic waves in a one-dimensional magnetic wire, which respects both rotational and translational symmetries. By invoking the conservation of the associated…

Mesoscale and Nanoscale Physics · Physics 2016-12-07 Se Kwon Kim , Daniel Hill , Yaroslav Tserkovnyak

We study current-induced domain-wall dynamics in a thin ferromagnetic nanowire. The domain-wall dynamics is described by simple equations with four parameters. We propose the procedure to determine these parameters by all-electric…

Mesoscale and Nanoscale Physics · Physics 2011-08-29 Y. Liu , Oleg A. Tretiakov , Ar. Abanov

We propose a method, which enables precise control of magnetic patterns, relying only on the fundamental properties of the wire and the choice of the path in the controlled parameter space but not on the rate of motion along this path.…

Materials Science · Physics 2009-11-13 N. A. Sinitsyn , V. V. Dobrovitski , S. Urazhdin , A. Saxena

We study theoretically the current-induced magnetic domain wall motion in a metallic nanowire with perpendicular magnetic anisotropy. The anisotropy can reduce the critical current density of the domain wall motion. We explain the reduction…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Soon-Wook Jung , Woojin Kim , Taek-Dong Lee , Kyung-Jin Lee , Hyun-Woo Lee

We investigate current-driven domain wall (DW) propagation in magnetic nanowires in the framework of the modified Landau-Lifshitz-Gilbert equation with both adiabatic and nonadiabatic spin torque (NAST) terms. Contrary to the common opinion…

Materials Science · Physics 2015-05-18 Z. Z. Sun , J. Schliemann , P. Yan , X. R. Wang

We investigate experimentally the effects of externally applied strain on the injection of 180$^\circ$ domain walls (DW) from a nucleation pad into magnetic nanowires, as typically used for DW-based sensors. In our study the strain,…

We generalize domain-wall dynamics to the case of translationally noninvariant ferromagnetic nanowires. The obtained equations of motion make the description of the domain-wall propagation more realistic by accounting for the variations…

Mesoscale and Nanoscale Physics · Physics 2012-06-13 O. A. Tretiakov , Y. Liu , Ar. Abanov

We present a circuit model to describe the electron transport through a domain wall in a ferromagnetic nanowire. The domain wall is treated as a coherent 4-terminal device with incoming and outgoing channels of spin up and down and the…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Peter E. Falloon , Rodolfo A. Jalabert , Dietmar Weinmann , Robert L. Stamps

Current-driven vortex wall dynamics is studied by means of a two-dimensional analytical model and micromagnetic simulation. By constructing a trial function for the vortex wall in the magnetic wire, we analytically solve for domain wall…

Materials Science · Physics 2009-11-11 Jiexuan He , Zhanjie Li , Shufeng Zhang

A high-amplitude microwave magnetic field localized at the nanoscale is a desirable tool for various applications within the rapidly developing field of nanomagnetism. Here, we drive magnetization precession by coherent phonons in a metal…

Antiferromagnets offer remarkable promise for future spintronics devices, where antiferromagnetic order is exploited to encode information. The control and understanding of antiferromagnetic domain walls (DWs) - the interfaces between…

Charge-density waves (CDWs) are correlated states of matter, where the electronic density is modulated periodically as a consequence of electronic and phononic interactions. Often, CDW phases coexist with other correlated states, such as…

Mesoscale and Nanoscale Physics · Physics 2025-01-24 Lisa M. Rütten , Eva Liebhaber , Kai Rossnagel , Katharina J. Franke

A domain wall (DW) in a ferromagnetic nanowire is composed of elementary topological bulk and edge defects with integer and fractional winding numbers, respectively, whose relative spatial arrangement determines the chirality of the DW.…

Mesoscale and Nanoscale Physics · Physics 2013-08-08 Aakash Pushp , Timothy Phung , Charles Rettner , Brian P. Hughes , See-Hun Yang , Luc Thomas , Stuart S. P. Parkin

We found by micromagnetic simulations that the motion of a transverse wall (TW) type domain wall in magnetic thin-film nanostripes can be manipulated via interaction with spin waves (SWs) propagating through the TW. The velocity of the TW…

The current mediated domain-wall dynamics in a thin ferromagnetic wire is investigated. We derive the effective equations of motion of the domain wall. They are used to study the possibility to optimize the power supplied by electric…

Mesoscale and Nanoscale Physics · Physics 2011-03-25 Oleg A. Tretiakov , Y. Liu , Ar. Abanov

We present experimental results on the displacement of a domain wall by injection of a dc current through the wall. The samples are 1 micron wide long stripes of a CoO/Co/Cu/NiFe classical spin valve structure. The stripes have been…

Materials Science · Physics 2009-11-07 J. Grollier , D. Lacour , V. Cros , A. Hamzic , A. Vaures , A. Fert , D. Adam , G. Faini

Current induced magnetization switching and resistance associated with domain walls pinned in nanoconstrictions have both been previously reported in (Ga,Mn)As based devices, but using very dissimilar experimental schemes and device…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 C. Gould , K. Pappert , C. Rüster , R. Giraud* , T. Borzenko , G. M. Schott , K. Brunner , G. Schmidt , L. W. Molenkamp

In 1996, Berger and Slonczewski independently predicted that a large enough spin-polarized dc current density sent perpendicularly through a ferromagnetic layer could produce magnetic excitations (spin-waves) or reversal of magnetization…

Materials Science · Physics 2009-11-10 J. Bass , S. Urazhdin , Norman O. Birge , W. P. Pratt

Recent studies have predicted extraordinary properties for transverse domain walls in cylindrical nanowires: zero depinning current, the absence of the Walker breakdown, and applications as domain wall oscillators. In order to reliably…

One of the important issues in nanomagnetism is to lower the current needed for a technologically useful domain wall (DW) propagation speed. Based on the modified Landau-Lifshitz-Gilbert (LLG) equation with both Slonczewski spin-transfer…

Mesoscale and Nanoscale Physics · Physics 2011-06-23 P. Yan , Z. Z. Sun , J. Schliemann , X. R. Wang
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