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The class of transition metal compounds shows an enormous richness of physical properties, such as metal-insulator transitions, colossal magneto-resistance, super-conductivity, magneto-optics and spin-depend transport. It now becomes more…

Strongly Correlated Electrons · Physics 2007-05-23 M. W. Haverkort

Using spin waves we directly probe the interface of an exchange biased Ni$_{80}$Fe$_{20}$/Ir$_{25}$Mn$_{75}$ film which has been modified by the presence of an Au dusting layer. Combining this experimental data with a discretised simulation…

Mesoscale and Nanoscale Physics · Physics 2011-12-12 R. Magaraggia , S. McIntyre , K. Kennewell , R. L. Stamps , M. Ali , D. Greig , B. J. Hickey , C. H. Marrows

By combining interface-sensitive non-linear magneto-optical experiments with femtosecond time resolution and ab-initio time-dependent density functional theory, we show that optically excited spin dynamics at Co/Cu(001) interfaces proceeds…

Materials Science · Physics 2019-02-20 J. Chen , U. Bovensiepen , A. Eschenlohr , T. Müller , P. Elliott , E. K. U. Gross , J. K. Dewhurst , S. Sharma

We study the proximity-induced superconducting correlations as well as the local density of states of a ferromagnet, in a ferromagnet/s-wave superconductor heterostructure. We include the effects of spin-flip scattering, non-ideal…

Superconductivity · Physics 2009-11-13 Jacob Linder , Asle Sudbø

Spin transport of magnonic excitations in uniaxial insulating antiferromagnets (AFs) is investigated. In linear response to spin biasing and a temperature gradient, the spin transport properties of normal-metal--insulating…

Mesoscale and Nanoscale Physics · Physics 2020-02-05 Roberto E. Troncoso , Scott A. Bender , Arne Brataas , Rembert A. Duine

We have examined the spin polarization of the electron current in a ferromagnetic metal induced by the spin-dependent surface screening at the dielectric-ferromagnetic metal (D-FM) interface. In an applied ac voltage, the dynamic band…

Mesoscale and Nanoscale Physics · Physics 2019-11-20 Piotr Graczyk , Maciej Krawczyk

Interfacial interactions are crucial in a variety of fields and can greatly affect the electric, magnetic, and chemical properties of materials. Among them, interface orbital hybridization plays a fundamental role in the properties of…

A broad effort is underway to understand and harness the interaction between superconductors and spin-active color centers with an eye on the realization of hybrid quantum devices and novel imaging modalities of superconducting materials.…

Interfacial spin to charge conversion arises due to an electric potential perpendicular to the interface. The electric potential can be artificially induced, for example, using ferroelectric and piezoelectric thin films at the interface. An…

Mesoscale and Nanoscale Physics · Physics 2020-06-23 Ravindra G Bhardwaj , Anand Katailiha , Paul C. Lou , W. P. Beyermann , Sandeep Kumar

The effective spin-mixing conductance (G_eff) of a heavy metal/ferromagnet (HM/FM) interface characterizes the efficiency of the interfacial spin transport.Accurately determining G_eff is critical to the quantitative understanding of…

Materials Science · Physics 2019-08-08 Lijun Zhu , Daniel C. Ralph , Robert A. Buhrman

We develop an effective tight-binding Hamiltonian for spin-orbit (SO) interaction in bent carbon nanotubes (CNT) for the electrons forming the $\pi$ bonds between the nearest neighbor atoms. We account for the bend of the CNT and the…

Mesoscale and Nanoscale Physics · Physics 2015-10-30 E. N. Osika , B. Szafran

Ferromagnetic resonance driven spin pumping of pure spin currents from a ferromagnet into a nonmagnetic material promises new spin-functional devices with low energy consumption. The mechanism of spin pumping is under intense investigation…

Materials Science · Physics 2014-05-20 C. H. Du , H. L. Wang , Y. Pu , T. L. Meyer , P. M. Woodward , F. Y. Yang , P. C. Hammel

The ultra-fast demagnetization of small iron clusters initiated by an intense optical excitation is studied with time-dependent spin density functional theory (TDSDFT). In particular we investigate the effect of the spin-orbit interaction…

Mesoscale and Nanoscale Physics · Physics 2016-07-27 Maria Stamenova , Jacopo Simoni , Stefano Sanvito

Despite intense efforts it has remained unresolved whether and how interfacial spin-orbit coupling (ISOC) affects spin transport across heavy metal (HM)/ferromagnet (FM) interfaces. Here we report conclusive experiment evidence that the…

Materials Science · Physics 2019-02-27 Lijun Zhu , D. C. Ralph , R. A. Buhrman

We theoretically investigate electron spin injection and spin-polarization sensitive current detection at Schottky contacts between a ferromagnetic metal and an n-type or p-type semiconductor. We use spin-dependent continuity equations and…

Condensed Matter · Physics 2009-11-10 J. D. Albrecht , D. L. Smith

Two ferromagnetic layers magnetically decoupled by a thick normal metal spacer layer can be, nevertheless, dynamically coupled via spin currents emitted by the spin-pump and absorbed through the spin-torque effects at the neighboring…

Mesoscale and Nanoscale Physics · Physics 2014-04-14 A. A. Timopheev , Yu. G. Pogorelov , S. Cardoso , P. P. Freitas , G. N. Kakazei , N. A. Sobolev

As electrical control of N\'eel order opens the door to reliable antiferromagnetic spintronic devices, understanding the microscopic mechanisms of antiferromagnetic switching is crucial. Spatially-resolved studies are necessary to…

Using element-specific measurements of the ultrafast demagnetization of Ru/Fe$_{65}$Co$_{35}$ heterostructures, we show that Ru can exhibit a significant magnetic contrast (3% asymmetry) resulting from ultrafast spin currents emanating from…

We report on the study of electron transport in the oxide heterostructures with superconductor/magnetic matter (S/M) interfaces where anomaly large penetration of superconducting correlations in magnetic matter (proximity effect) is…

The magnetic properties and magnetization dynamics of polycrystalline ultra-thin Co layers were investigated using a broadband ferromagnetic resonance (FMR) technique at room temperature. A variable thickness (1 nm $\leq t \leq$ 10 nm) Co…

Mesoscale and Nanoscale Physics · Physics 2007-07-10 J-M. L. Beaujour , J. H. Lee , A. D. Kent , K. Krycka , C-C. Kao
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