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We study theoretically spin pumping in bilayers consisting of superconductors and antiferromagnetic insulators. We consider both compensated and uncompensated interfaces and include both the regular scattering channel and the Umklapp…

Superconductivity · Physics 2021-04-14 Eirik Holm Fyhn , Jacob Linder

We investigate the effect of the interlayer spin-flip tunneling for the interlayer magnetoresistance under magnetic fields in alpha-(BEDT-TTF)2I3, which is a multilayer massless Dirac fermion system under pressure. The mean field of the…

Mesoscale and Nanoscale Physics · Physics 2015-02-24 Kenji Kubo , Takao Morinari

The tension between fermion pairing and magnetism affects numerous strongly correlated electron systems, from high-temperature cuprates to twisted bilayer graphene. Exotic forms of fermion pairing and superfluidity are predicted when…

We develop a theory of the exchange interaction between ferromagnetic (FM) metallic grains embedded into insulating matrix by taking into account the Coulomb blockade effects. For bulk ferromagnets separated by the insulating layer the…

Mesoscale and Nanoscale Physics · Physics 2017-04-10 O. G. Udalov , I. S. Beloborodov

We revisit the non-collinear exchange coupling across the trilayer magnetic junction mediated by the diluted-magnetic-semiconductor thin film. By numerical approaches, we investigate the spiral angle between the ferromagnetic layers…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Chia-Hui Lin , Hsiu-Hau Lin , Tzay-Ming Hong

Optically driven intersite and interlayer spin transfer are individually known as the fastest processes for manipulating the spin order of magnetic materials on the sub 100 fs time scale. However, their competing influence on the ultrafast…

Critical phenomena and universality behavior of ferromagnetic thin films described by a spin-1 Blume-Capel Hamiltonian has been examined for various thickness values ranging from 3 to 40 layers. Using effective field theory, we have found…

Statistical Mechanics · Physics 2015-06-15 Yusuf Yuksel , Umit Akinci

"Pumping" of phonons by a dynamic magnetization promises to extend the range and functionality of magnonic devices. We explore the impact of phonon pumping on room-temperature ferromagnetic resonance (FMR) spectra of bilayers of thin…

Mesoscale and Nanoscale Physics · Physics 2022-07-20 Richard Schlitz , Luise Siegl , Takuma Sato , Weichao Yu , Gerrit E. W. Bauer , Hans Huebl , Sebastian T. B. Goennenwein

We present theoretical studies of the spin pumping contribution to the ferromagnetic resonance linewidth for various ultrathin film ferromagnetic structures. We consider the isolated film on a substrate, with Fe on Au(100) and Fe on W(110)…

Other Condensed Matter · Physics 2007-05-23 A. T. Costa , R. B. Muniz , D. L. Mills

We study a model thin film containing diluted bilayer structure with the RKKY long-range interaction. The magnetic subsystem is composed of two magnetically doped layers, separated by an undoped nonmagnetic spacer and placed inside a wider…

Materials Science · Physics 2015-05-13 Karol Szałowski , Tadeusz Balcerzak

Long-range spin transport in magnetic systems can be achieved by means of exchange-mediated spin textures with robust topological winding -- a phenomenon referred to as spin superfluidity. Its experimental signatures have been discussed in…

It is shown how the exchange coupling between two ferromagnetic planes embedded in an infinite non-magnetic metal, regarded as a function of the distance between the planes, may contain important components which oscillate with periods not…

Condensed Matter · Physics 2007-05-23 M. S. Ferreira , J. d'Albuquerque e Castro , D. M. Edwards , J. Mathon

Ferromagnetic substrate influences the electromagnetic response of a type-II superconducting film to the applied magnetic field. We present a two-dimensional integrodifferential model for the magnetization of a flat…

Superconductivity · Physics 2024-02-12 Leonid Prigozhin , Vladimir Sokolovsky

We investigate a novel type of interlayer exchange coupling based on driving a strong/weak/strong ferromagnetic tri-layer through the Curie point of the weakly ferromagnetic spacer, with the exchange coupling between the strongly…

Materials Science · Physics 2013-11-27 A. Kravets , A. N. Timoshevskii , B. Z. Yanchitsky , M. Bergmann , J. Buhler , S. Andersson , V. Korenivski

Ultrafast optical pumping of spatially nonuniform magnetic textures is known to induce far-from-equilibrium spin transport effects. Here, we use ultrafast x-ray diffraction with unprecedented dynamic range to study the laser-induced…

We consider a mixture of spin-1/2 bosons and fermions, where only the bosons are subjected to the spin-orbit coupling induced by Raman beams. The fermions, although not directly coupled to the Raman lasers, acquire an effective spin-orbit…

Atomic Physics · Physics 2019-09-25 Chuanzhou Zhu , Li Chen , Hui Hu , Xia-Ji Liu , Han Pu

We show that in ferromagnetic (FM)/normal metal (NM) bilayers the dynamic coupling at the interface transfers an additional magnetic relaxation from the heavily damped motion of the conduction electron spins in the NM layer to the FM spins.…

Materials Science · Physics 2012-07-16 S. M. Rezende , R. Rodríguez-Suárez , M. M. Soares , L. H. Vilela-Leão , A. Azevedo

Dynamical perturbations can modify the energy landscape of a physical system, such that unstable equilibrium configurations become stable when subject to an external drive. The magnetic analog of such dynamical stabilization corresponds to…

Mesoscale and Nanoscale Physics · Physics 2026-01-15 Emir Karadza , Hanchen Wang , Niklas Kercher , Paul Noel , William Legrand , Richard Schlitz , Pietro Gambardella

We explore the effect of single-particle level fluctuations on the Stoner instability in a QD with a strong spin-orbit coupling in the framework of the universal Hamiltonian with the Ising exchange interaction. We reduce the problem to…

Mesoscale and Nanoscale Physics · Physics 2014-05-21 D. S. Lyubshin , A. U. Sharafutdinov , I. S. Burmistrov

Spin pumping enables the vertical transport of pure spin current through Al in a Pd/Al/Ni80Fe20(Py) trilayer film, in which the Py acts as a spin battery. The spin current injected into the Al flows through the Al to reach the Pd, resulting…

Materials Science · Physics 2014-02-14 Yuta Kitamura , Eiji Shikoh , Yuichiro Ando , Teruya Shinjo , Masashi Shiraishi