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We study two reciprocal thermal effects in the ferromagnetic semiconductor (Ga,Mn)As by scattering theory: domain wall motion induced by a temperature gradient as well as heat currents pumped by a moving domain wall. The effective…

Mesoscale and Nanoscale Physics · Physics 2010-03-03 Kjetil M. D. Hals , Arne Brataas , Gerrit E. W. Bauer

Spin wave, the collective excitation of magnetic order, is one of the fundamental angular momentum carriers in magnetic systems. Understanding the spin wave propagation in magnetic textures lies in the heart of developing pure magnetic…

Materials Science · Physics 2021-06-09 Jin Lan , Weichao Yu , Jiang Xiao

Compensated ferrimagnets are promising materials for fast spintronic applications based on domain wall motion as they combine the favourable properties of ferromagnets and antiferromagnets. They inherit from antiferromagnets immunity to…

Domain wall motion driven by ultra-short laser pulses is a prerequisite for envisaged low-power spintronics combining storage of information in magneto electronic devices with high speed and long distance transmission of information encoded…

Mesoscale and Nanoscale Physics · Physics 2017-06-28 T. Janda , P. E. Roy , R. M. Otxoa , Z. Soban , A. Ramsay , A. C. Irvine , F. Trojanek , R. P. Campion , B. L. Gallagher , P. Nemec , T. Jungwirth , J. Wunderlich

We investigate magnetic domain wall (MDW) dynamics induced by applied electric fields in ferromagnetic-ferroelectric thin-film heterostructures. In contrast to conventional driving mechanisms where MDW motion is induced directly by magnetic…

Materials Science · Physics 2014-01-17 Ben Van de Wiele , Lasse Laurson , Kévin Franke , Sebastiaan van Dijken

We theoretically investigate the transfer of angular momentum between a spin superfluid and a domain wall in an exchange coupled easy-axis and easy-plane magnetic insulator system. A domain wall in the easy-axis magnet absorbs spin angular…

Mesoscale and Nanoscale Physics · Physics 2017-03-08 Pramey Upadhyaya , Se Kwon Kim , Yaroslav Tserkovnyak

Ferromagnetic domain walls -transitional regions between magnetic domains- are an essential ingredient for racetrack memory, a device concept that promises to deliver faster and more compact memory storage compared to other non-volatile…

Mesoscale and Nanoscale Physics · Physics 2026-03-12 A. L. Bassant , Y. M. J. Ohlsen , M. Cherkasskii , P. B. He , R. A. Duine

It is a well-established notion that the spin of a magnon should be flipped when it passes through a $180^{\circ}$ domain wall (DW) in both ferromagnets and antiferromagnets, while the magnon spin transport through ferrimagnetic DW is still…

Mesoscale and Nanoscale Physics · Physics 2024-06-14 Zhaozhuo Zeng , Peng Yan

Domain wall propagation in cylindrical nanowires with modulations of diameter is a key phenomenon to design physics-oriented devices, or a disruptive three-dimensional magnetic memory. This chapter presents a combination of analytical…

Mesoscale and Nanoscale Physics · Physics 2022-06-16 A. De Riz , B. Trapp , J. A. Fernandez-Roldan , Ch. Thirion , J. -Ch. Toussaint , O. Fruchart , D. Gusakova

We study the magnetic dynamics of magnetoelectric antiferromagnetic thin films, where an unconventional boundary ferromagnetism coexists with the bulk N\'{e}el phase below the N\'{e}el temperature. The spin exchange between the two order…

Mesoscale and Nanoscale Physics · Physics 2018-01-24 Ricardo Zarzuela , Se Kwon Kim , Yaroslav Tserkovnyak

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

Movements of individual domain walls in a ferromagnetic garnet were studied with angstrom resolution. The measurements reveal that domain walls can be locked between adjacent crystallographic planes and propagate by distinct steps matching…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 K. S. Novoselov , A. K. Geim , S. V. Dubonos , E. W. Hill , I. V. Grigorieva

We study transport in the presence of magnetic domain walls (DWs) in a lattice model of ferromagnetic type-I Weyl metals. We compute the diagonal and Hall conductivities in the presence of a DW, using both Kubo and Landauer formalisms, and…

Mesoscale and Nanoscale Physics · Physics 2021-03-19 Sopheak Sorn , Arun Paramekanti

We present a simple model of a domain wall in a thin-film ferromagnet. A domain wall is represented as a nonreciprocal string, on which transverse waves propagate with different speeds in opposite directions. The model has three parameters:…

Mesoscale and Nanoscale Physics · Physics 2018-09-19 Shu Zhang , Oleg Tchernyshyov

The thermal spin-wave distribution in a Ni81Fe19 stripe with an asymmetric transverse domain wall has been investigated using Brillouin light scattering microscopy. Clear evidence has been found that the existence of the domain wall…

Materials Science · Physics 2009-11-13 C. W. Sandweg , S. J. Hermsdoerfer , H. Schultheiss , S. Schaefer , B. Leven , B. Hillebrands

The current-induced motion of a domain wall in a semicircle nanowire with applied Zeeman field is investigated. Starting from a micromagnetic model we derive an analytical solution which characterizes the domain-wall motion as a harmonic…

Mesoscale and Nanoscale Physics · Physics 2015-06-25 Benjamin Krueger , Daniela Pfannkuche , Markus Bolte , Guido Meier , Ulrich Merkt

The current-driven domain wall motion along two exchange-coupled ferromagnetic layers with perpendicular anisotropy is studied by means of micromagnetic simulations and compared to the conventional case of a single ferromagnetic layer. Our…

Mesoscale and Nanoscale Physics · Physics 2018-01-24 Oscar Alejos , Victor Raposo , Luis Sanchez-Tejerina , Riccardo Tomasello , Giovanni Finocchio , Eduardo Martinez

We discuss a new mechanism which allows domain walls produced during the primordial electroweak phase transition. We show that the effective surface tension of these domain walls can be made vanishingly small due to a peculiar magnetic…

Astrophysics · Physics 2009-11-10 L. Campanelli , P. Cea , G. L. Fogli , L. Tedesco

We study shot noise of the spin-polarized current in a diffusive ferromagnetic nanowire which contains a ballistic domain wall. We find that the existence of a short domain wall influences strongly the shot noise for sufficiently high…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Babak Abdollahipour , Malek Zareyan , Nazila Asaadi

We investigate the domain wall dynamics of a ferromagnetic wire under the combined influence of a spin-polarized current and magnonic spin-transfer torque generated by an external field, taking also into account Rashba spin-orbit coupling…

Mesoscale and Nanoscale Physics · Physics 2015-06-11 Jacob Linder
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