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We have fabricated (Ga,Mn)As nanostructures in which domain walls can be pinned by sub-10 nm constrictions. Controlled by shape anisotropy, we can switch the regions on either side of the constriction to either parallel or antiparallel…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 C. Ruester , T. Borzenko , C. Gould , G. Schmidt , L. W. Molenkamp , X. Liu , T. J. Wojtowicz , J. K. Furdyna , Z. G. Yu , M. E. Flatte

The interaction between a magnetic thin film and a superconductor is studied. In particular, the equilibrium width of a Bloch wall is estimated with and without the superconductor. It is shown that the Bloch wall experiences a small…

Superconductivity · Physics 2009-11-07 L. E. Helseth , P. E. Goa , H. Hauglin , M. Baziljevich , T. H. Johansen

The geometry and morphology of magnetic domain walls (DWs) are closely related to their dynamics when driven by external forces. Under some reliable approximations DWs can be considered self-affine interfaces, so universal laws govern their…

Disordered Systems and Neural Networks · Physics 2023-12-29 P. Domenichini , G. Pasquini , M. G. Capeluto

We present an analytical theory of domain wall tilt due to a transverse in-plane magnetic field in a ferromagnetic nanostrip with out-of-plane anisotropy and Dzyaloshinskii-Moriya interaction (DMI). The theory treats the domain walls as…

Mesoscale and Nanoscale Physics · Physics 2017-10-17 Cyrill B. Muratov , Valeriy V. Slastikov , Alexander G. Kolesnikov , Oleg A. Tretiakov

A domain wall and spin supercurrent can coexist in magnets with easy-cone anisotropy owing to simultaneous spontaneous breaking of Z$_2$ and U(1) symmetries. Their interaction is theoretically investigated in quasi one-dimensional…

Mesoscale and Nanoscale Physics · Physics 2016-12-28 Se Kwon Kim , Yaroslav Tserkovnyak

The orientation of a chiral magnetic domain wall in a racetrack determines its dynamical properties. In equilibrium, magnetic domain walls are expected to be oriented perpendicular to the stripe axis. We demonstrate the appearance of a…

MnTe has recently emerged as a canonical altermagnet, a newly identified class of magnetism characterized by compensated antiferromagnetic order coexisting with spin-split electronic bands, traditionally considered exclusive to…

We report several procedures for the robust nucleation of magnetic domain walls in cylindrical permalloy nanowires. Specific features of the magnetic force microscopy contrast of such soft wires are discussed, with a view to avoid the…

Materials Science · Physics 2016-08-24 S Da Col , S Jamet , M Staňo , B Trapp , S Le Denmat , L Cagnon , J. C. Toussaint , Olivier Fruchart

Stripe width variation in ultrathin magnetic films is a well known phenomenon still not well understood. We analyze this problem considering a 2D Heisenberg model with ferromagnetic exchange interactions, dipolar interactions and…

Disordered Systems and Neural Networks · Physics 2009-07-30 Santiago A. Pighin , Orlando V. Billoni , Daniel A. Stariolo , Sergio A. Cannas

Bilayers of two-dimensional van der Waals materials that lack an inversion centre can show a novel form of ferroelectricity, where certain stacking arrangements of the two layers lead to an interlayer polarization. Under an external…

Superconductivity · Physics 2024-06-27 Gaurav Chaudhary , Ivar Martin

We study theoretically the magnetic screening properties of thin, diffusive superconductor/ferromagnet bilayers subject to a perpendicular magnetic field. We find that the effective penetration depth characterizing the magnetic response…

Superconductivity · Physics 2015-05-13 Manuel Houzet , Julia S. Meyer

In binary alloys, domain walls play a central role not only on the phase transitions but also on their physical properties and were at the heart of the 70's metallurgy research. Whereas it can be predicted, with simple physics arguments,…

We study a system of Dirac electrons with finite density of charge carriers coupled to an external electromagnetic field in two spatial dimensions, with a domain wall (DW) mass term. The interface between a thin-film ferromagnet and a…

Mesoscale and Nanoscale Physics · Physics 2015-08-19 Yago Ferreiros , F. J. Buijnsters , M. I. Katsnelson

It was suggested that the two consecutive metamagnetic transitions and the large residual resistivity discovered in Sr$_3$Ru$_2$O$_7$ can be understood via the nematic order and its domains in a single layer system. However, a recently…

Strongly Correlated Electrons · Physics 2009-11-13 Christoph Puetter , Hyeonjin Doh , Hae-Young Kee

We present the results of experimental investigations of magnetic switching and magnetotransport in a new generation of magnetic devices containing artificially patterned domains. Our devices are realised by locally reducing the coercive…

Materials Science · Physics 2008-02-06 A. Aziz , S. J. Bending , H. Robert , S. Crampin , P. J. Heard , C. H. Marrows

We study existence and properties of one-dimensional edge domain walls in ultrathin ferromagnetic films with uniaxial in-plane magnetic anisotropy. In these materials, the magnetization vector is constrained to lie entirely in the film…

Analysis of PDEs · Mathematics 2018-02-07 Ross G. Lund , Cyrill B. Muratov , Valeriy V. Slastikov

Recent advancements in 2D materials have revealed the potential of van der Waals magnets, and specifically of their magnetic anisotropy that allows applications down to the 2D limit. Among these materials, CrSBr has emerged as a promising…

An influence of strong sample demagnetization field on the structure of plane 90-degree Bloch domain walls in a cubic (001)-crystal with a negative first constant of magnetic anisotropy is considered.

Other Condensed Matter · Physics 2011-05-03 Svitlana A. Dyachenko , Bogdan M. Tanygin , Olexandr V. Tychko

Next-generation concepts for solid-state memory devices are based on current-driven domain wall propagation, where the wall velocity governs the device performance. It has been shown that the domain wall velocity and the direction of travel…

Magnetic state of exchanged biased CoO(20nm)/Co($d_F$) bilayer ($d_F$=5-20nm) was studied by means of polarized neutron reflectometry. By spacing of CoO/Co bilayer and Al$_2$O$_3$ substrate with Nb(20nm) layer we created waveguide structure…

Strongly Correlated Electrons · Physics 2021-12-07 Yu. Khaydukov , D. Lenk , V. Zdravkov , R. Morari , T. Keller , A. S. Sidorenko , L. R. Tagirov , R. Tidecks , S. Horn , B. Keimer