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We have investigated the domain wall resistance for two types of domain walls in a (Ga,Mn)As Hall bar with perpendicular magnetization. A sizeable positive intrinsic DWR is inferred for domain walls that are pinned at an etching step, which…

We study the dynamics of magnetic domain walls in the Peierls potential due to the discreteness of the crystal lattice. The propagation of a narrow domain wall (comparable to the lattice parameter) under the effect of a magnetic field…

Mesoscale and Nanoscale Physics · Physics 2014-11-18 F. J. Buijnsters , A. Fasolino , M. I. Katsnelson

We study superfluidlike spin transport facilitated by thermal diffusion of magnetic domain walls, where the positive and negative chiralities of domain walls act as opposite topological charges. The topological charge conservation leads to…

Mesoscale and Nanoscale Physics · Physics 2024-07-16 Alexey A. Kovalev , Bo Li , Edward Schwartz

We study properties of domain walls in the symmetron model, in which the scalar gravitational degree of freedom decouples from matter in regions of high density, and exhibits a spontaneously broken $Z_2$ symmetry at low densities. The…

Cosmology and Nongalactic Astrophysics · Physics 2014-12-24 Claudio Llinares , Levon Pogosian

Starting from a simple microscopic model, we have derived a kinetic equation for the matrix distribution function. We employed this equation to calculate the conductance $G$ in a mesoscopic F'/F/F' structure with a domain wall (DW). In the…

Materials Science · Physics 2009-11-07 F. S. Bergeret , A. F. Volkov , K. B. Efetov

Two-dimensional arrays of nonlinear electric oscillators are considered theoretically, where nearest neighbors are coupled by relatively small, constant, but non-equal capacitors. The dynamics is approximately reduced to a weakly…

Pattern Formation and Solitons · Physics 2020-07-09 Victor P. Ruban

We theoretically study the interaction of magnons, quanta of spin waves, and a domain wall in a one-dimensional easy-axis antiferromagnet in the presence of an external magnetic field applied along the easy axis. To this end, we begin by…

Mesoscale and Nanoscale Physics · Physics 2020-06-19 Pengtao Shen , Yaroslav Tserkovnyak , Se Kwon Kim

We consider a system of two interpenetrating Bose-Einstein condensates of atoms in two different hyperfine spin states. We show that in the presence of a small coupling drive between the two spin levels, there exist domain walls across…

Soft Condensed Matter · Physics 2016-08-31 D. T. Son , M. A. Stephanov

We investigate the effect of both strong and weak potential scattering caused by local impurities and extended (line) defects in the array of Luttinger liquid wires. We find that in both cases a finite range inter-wire interaction…

Strongly Correlated Electrons · Physics 2017-10-10 A. L. Chudnovskiy , V. Kagalovsky , I. V. Yurkevich

Spin-orbit torque in magnetic domain walls was investigated by solving the Pauli-Schr\"{o}dinger equation for the itinerant electrons. The Rashba interaction considered is derived from the violation of inversion symmetry at interfaces…

Mesoscale and Nanoscale Physics · Physics 2019-08-21 D. Wang , Yan Zhou

Using Monte Carlo simulation, we study a fluid of two-dimensional hard rods inside a small circular cavity bounded by a hard wall, from the dilute regime to the high-density, layering regime. Both planar and homeotropic anchoring of the…

Soft Condensed Matter · Physics 2014-02-04 Daniel de las Heras , Enrique Velasco

It has been proposed that the microwave-induced ``zero-resistance'' phenomenon, observed in a GaAs two-dimensional electron system at low temperatures in moderate magnetic fields, results from a state with multiple domains, in which a large…

Mesoscale and Nanoscale Physics · Physics 2015-06-25 Ilya Finkler , Bertrand I. Halperin , Assa Auerbach , Amir Yacoby

We develop a systematic asymptotic description for domain wall motion in one-dimensional magnetic nanowires under the influence of small applied magnetic fields and currents and small material anisotropy. The magnetization dynamics, as…

Materials Science · Physics 2013-10-17 Arseni Goussev , Ross G. Lund , JM Robbins , Valeriy Slastikov , Charles Sonnenberg

We examine theoretically the role of spin-waves on current-induced domain wall dynamics in a ferromagnetic wire. At room temperature, we find that an interaction between the domain wall and the spin waves appears when there is a finite…

Materials Science · Physics 2015-05-13 Yann Le Maho , Joo Von Kim , Gen Tatara

We study the stability of two-domain spin structures in an ultra-cold gas of magnetically trapped $^{87}$Rb atoms above quantum degeneracy. Adding a small effective magnetic field gradient stabilizes the domains via coherent collective spin…

Quantum Gases · Physics 2018-05-16 S. D. Graham , D. Niroomand , R. J. Ragan , J. M. McGuirk

Tunneling spectroscopy of one-dimensional interacting wires can be profoundly sensitive to the boundary conditions of the wire. Here, we analyze the tunneling spectroscopy of a wire coupled to capacitive metallic leads. Strikingly, with…

Mesoscale and Nanoscale Physics · Physics 2019-04-03 Antonio Štrkalj , Michael S. Ferguson , Tobias M. R. Wolf , Ivan Levkivskyi , Oded Zilberberg

Most Mott systems display a low-temperature phase coexistence region around the metal-insulator transition. The domain walls separating the respective phases have very recently been observed both in simulations and in experiments,…

Strongly Correlated Electrons · Physics 2022-10-05 Tsung-Han Lee , J. Vučičević , D. Tanasković , E. Miranda , V. Dobrosavljević

We develop a theory of tunneling spectroscopy of interacting electrons in a non-equilibrium quantum wire coupled to reservoirs. The problem is modelled as an out-of-equilibrium Luttinger liquid with spatially dependent interaction. The…

Mesoscale and Nanoscale Physics · Physics 2009-07-09 D. B. Gutman , Yuval Gefen , A. D. Mirlin

Inter-site interactions in polar lattice gases may result, due to Hilbert-space fragmentation, in a lack of ergodicity even in absence of disorder. We show that the inter-site interaction in a one-dimensional dipolar gas in an optical…

Quantum Gases · Physics 2023-10-31 H. Korbmacher , P. Sierant , W. Li , X. Deng , J. Zakrzewski , L. Santos

We perform numerical scattering experiments on a Lorentz array of disks centered on a triangular lattice with L columns and study its transmission and reflection properties. In the finite horizon case, the motion of the particles may be…

Statistical Mechanics · Physics 2009-10-31 Hernan Larralde , Francois Leyvraz , Gustavo Martinez-Mekler , Raul Rechtman , Stefano Ruffo
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