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We present fractional quantum Hall domain walls confined in a gate-defined wire structure. Our experiments utilize spatial oscillation of domain walls driven by radio frequency electric fields to cause nuclear magnetic resonance. The…

Mesoscale and Nanoscale Physics · Physics 2016-03-11 S. Miyamoto , T. Miura , S. Watanabe , K. Nagase , Y. Hirayama

Ferroelectric domain walls are attracting broad attention as atomic-scale switches, diodes and mobile wires for next-generation nanoelectronics. Charged domain walls in improper ferroelectrics are particularly interesting as they offer…

We show that nano-scale variations of the order parameter in strongly-correlated systems can induce local spatial regions such as domain walls that exhibit electronic properties representative of a different, but nearby, part of the phase…

Strongly Correlated Electrons · Physics 2009-11-10 M. S. Rzchowski , Robert Joynt

We report the results of experimental investigations of controlled domain wall (DW) pinning in a ferromagnetic nanowire (NW) by stray fields of two uniformly magnetized bistable ferromagnetic nanoparticles (NPs) placed on either side of the…

Mesoscale and Nanoscale Physics · Physics 2018-07-04 V. L. Mironov , O. L. Ermolaeva , E. V. Skorohodov

We demonstrate from both simulation and experiment a simple scheme for selective injection of multiple domain walls in a magnetic nanowire. The structure consists of a side-contact misaligned Hall bar made of ferromagnet/heavy metal…

Materials Science · Physics 2017-11-22 Ziyan Luo , Wugang Liao , Yumeng Yang , Chunxiang Zhu , Yihong Wu

In order to explain recent experiments reporting a motion of magnetic domain walls (DW) in nanowires carrying a current, we propose a modification of the spin transfer torque term in the Landau-Lifchitz-Gilbert equation. We show that it…

Materials Science · Physics 2015-06-24 A. Thiaville , Y. Nakatani , J. Miltat , Y Suzuki

We outline a general framework to determine the effect of non-equilibrium fluctuations on driven collective coordinates, and apply it to a current-driven domain wall in a nanocontact. In this case the collective coordinates are the…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 M. E. Lucassen , R. A. Duine

We show that the drift-diffusion mechanism in a normal-metal layer in combination with the resonance electron-magnon interactions at ferromagnet-normal interface of F-N-F heterostucture creates spatial instability modes and, out of these…

Adaptation and Self-Organizing Systems · Physics 2009-11-11 Pavel Levin

Ultrathin ferromagnetic strips with high perpendicular anisotropy have been proposed for the development of memory devices where the information is coded in tiny domains separated by domain walls. The design of practical devices requires…

Mesoscale and Nanoscale Physics · Physics 2017-09-21 Oscar Alejos , Victor Raposo , Luis Sanchez-Tejerina , Eduardo Martinez

A theory for the spin wave eigenmodes of a Dzyaloshinskii domain wall is presented. These walls are N\'eel-type domain walls that can appear in perpendicularly-magnetized ultrathin ferromagnets in the presence of a sizeable…

Materials Science · Physics 2015-07-07 Pablo Borys , Felipe Garcia-Sanchez , Joo-Von Kim , Robert L. Stamps

The distribution of magnetic moments in finite ferromagnetic bodies was first investigated by Landau and Lifshitz in a famous paper [\textit{Phys. Z. Soviet Union}, \textbf{8}, 153 (1935)], where they obtained the domain structure of a…

Statistical Mechanics · Physics 2009-09-25 B. Uchoa , G. G. Cabrera

Mechanically bent nickel nanowires show clear features in their room temperature magnetoresistance when a domain wall is pinned at the location of the bend. By varying the direction of an applied magnetic field, the wire can be prepared…

Materials Science · Physics 2007-05-23 D. M. Silevitch , M. Tanase , C. L. Chien , D. H. Reich

We show that an applied charge current in a magnetic nanowire containing domain walls (DWs) results in an interaction between DWs mediated by spin-dependent interferences of the scattered carriers. The energy and torque associated with this…

Other Condensed Matter · Physics 2009-05-25 N. Sedlmayr , V. K. Dugaev , J. Berakdar

The recent observation of current-induced domain wall (DW) motion with large velocity in ultrathin magnetic wires has opened new opportunities for spintronic devices. However, there is still no consensus on the underlying mechanisms of DW…

We theoretically study domain wall oscillations upon the injection of a dc current through a geometrically constrained wire with perpendicular magnetic anisotropy. The oscillation frequency spectrum can be tuned by the injected current…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 A. Bisig , O. Boulle , M. Klaui

We investigate magnetic domain walls in a single fcc Mn layer on Re(0001) employing spin-polarized STM, atom manipulation, and spin dynamics simulations. The low symmetry of the row-wise antiferromagnetic (1Q) state leads to a new type of…

Mesoscale and Nanoscale Physics · Physics 2021-06-16 Jonas Spethmann , Martin Grünebohm , Roland Wiesendanger , Kirsten von Bergmann , André Kubetzka

Control of magnetic domain wall movement by the spin-polarized current looks promising for creation of a new generation of magnetic memory devices. A necessary condition for this is the domain wall shift by a low-density current. Here I…

Mesoscale and Nanoscale Physics · Physics 2014-03-11 Vladimir L. Korenev

We study the externally-driven motion of the domain walls (DWs)of the pi/2 type in (in-the-plane ordered) nanostripes of the crystalline cubic anisotropy. Such DWs are much narrower than the transverse and vortex pi DWs of the soft-magnetic…

Mesoscale and Nanoscale Physics · Physics 2016-03-15 Andrzej Janutka , Przemyslaw Gawronski , Pawel S Ruszala

Charge manipulation and fabrication of stable domain patterns in ferroelectric materials by scanning probe microscopy open up broad avenues for the development of tunable electronics. Harnessing the polarization energy and electrostatic…

Materials Science · Physics 2021-02-08 S. Kondovych , A. Gruverman , I. Luk'yanchuk

We consider an antiferromagnet in one space dimension with easy-axis anisotropy in a perpendicular magnetic field. We study propagating domain wall solutions that can have a velocity up to a maximum $v_c$. The width of the domain wall is a…

Mesoscale and Nanoscale Physics · Physics 2025-03-18 George Theodorou , Stavros Komineas
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