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The nature of magnetic order and transport properties near surfaces is a topic of great current interest. Here we model metal-insulator interfaces with a multi-layer system governed by a tight-binding Hamiltonian in which the interaction is…

Strongly Correlated Electrons · Physics 2012-06-14 A. Euverte , F. Hébert , S. Chiesa , R. T. Scalettar , G. G. Batrouni

We study the formation of inhomogeneous magnetization texture in the vicinity of a tunnel junction between two ferromagnetic wires nominally in the antiparallel configuration and its influence on the magnetoresistance of such a device. The…

Strongly Correlated Electrons · Physics 2008-11-21 Igor Kuzmenko , Vladimir Fal'ko

We study the interface physics of bipartite magnetic materials deposited on a topological insulator. This comprises antiferromagnets as well as ferrimagnets and ferromagnets with multiple magnetic moments per unit cell. If an energy gap is…

Mesoscale and Nanoscale Physics · Physics 2017-04-24 Stefan Rex , Flavio Nogueira , Asle Sudbø

Van der Waals (vdW) magnets, with their two-dimensional (2D) atomic structures, provide a unique platform for exploring magnetism at the nanoscale. Although there have been numerous reports on their diverse quantum properties, the emergent…

Collinear antiferromagnets (AFs) support two degenerate magnon excitations carrying opposite spin polarizations, by which magnons can function as electrons in various spin-related phenomena. In an insulating ferromagnet(F)/AF/F trilayer, we…

Mesoscale and Nanoscale Physics · Physics 2018-11-21 Ran Cheng , Di Xiao , Jian-Gang Zhu

A wide class of materials acquires magnetic properties due to particle interactions through exchange forces. These can be atoms and molecules composing the system itself, as in the case of numerous magnetic substances. Or these could be…

Mesoscale and Nanoscale Physics · Physics 2015-07-17 V. I. Yukalov , E. P. Yukalova

The proximity-induced couplings in graphene due to the vicinity of a ferromagnetic insulator are analyzed. We combine general symmetry principles and simple tight-binding descriptions to consider different orientations of the magnetization.…

Mesoscale and Nanoscale Physics · Physics 2019-10-15 Vo Tien Phong , Niels R. Walet , Francisco Guinea

We report the results of a set of simulations of small arrays of submicron ferromagnetic particles. The actions of dipolar and exchange interactions were qualitatively investigated by analysing the ferromagnetic resonance spectra at 9.37…

Materials Science · Physics 2009-11-13 Christine C. Dantas , Luiz A. de Andrade

Using atomistic Monte Carlo simulations, we investigated the impact of the interface on the structural properties of iron and copper (Fe/Cu) magnetic multilayers grown by Vorono\"i diagram. Interest in magnetic multilayers has recently…

Materials Science · Physics 2017-11-27 Jules Berlin Nde Kengne , Bernard Fongang , Serge Zekeng

Magnetic anisotropy is a key parameter to describe the exchange bias effect in heterostructures. In this paper, we describe explicit density functional calculations of the magnetic structure of an interface between the industrially…

Materials Science · Physics 2025-09-03 Robert A. Lawrence , Matt I. J. Probert

Transition metal oxides (TMOs) exhibit many emergent phenomena ranging from high-temperature superconductivity and giant magnetoresistance to magnetism and ferroelectricity. In addition, when TMOs are interfaced with each other, new…

Strongly Correlated Electrons · Physics 2014-07-04 Jian-Xin Zhu , Xiao-Dong Wen , J. T. Haraldsen , Mi He , C. Panagopoulos , Elbert E. M. Chia

By means of magneto-optical Kerr effect we observe for the first time antiferromagnetic coupling between ferromagnetic layers across an amorphous metallic spacer layer. Biquadratic coupling occurs at the transition from a ferromagnetically…

Investigations of the magnetic properties of graphenes prepared by different methods reveal that dominant ferromagnetic interactions coexist along with antiferromagnetic interactions in all the samples. Thus, all the graphene samples…

Chemical Physics · Physics 2009-04-20 H. S. S. Ramakrishna Matte , K. S. Subrahmanyam , C. N. R. Rao

We have measured the electrical transport of submicron ferromagnets (Ni) in contact with a mesoscopic superconductor (Al) for a range of interface resistances. In the geometry measured, the interface and the ferromagnet are measured…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 J. Aumentado , V. Chandrasekhar

Novel phenomena appear when two different oxide materials are combined together to form an interface. For example, at the interface of LaAlO3/SrTiO3, two dimensional conductive states form to avoid the polar discontinuity and magnetic…

Materials Science · Physics 2017-02-23 Fang Wang , Zhaohui Ren , He Tian , Shengyuan A. Yang , Yanwu Xie , Yunhao Lu , Jianzhong Jiang , Gaorong Han , Kesong Yang

We have measured in a copper wire the energy exchange rate between quasiparticles as a function of the applied magnetic field. We find that the effective electron-electron interaction is strongly modified by the magnetic field, suggesting…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 A. Anthore , F. Pierre , H. Pothier , D. Esteve , M. -H. Devoret

We investigate theoretically the magnetic dynamics in a ferroelectric/ferromagnetic heterostructure coupled via strain-mediated magnetoelectric interaction. We predict an electric field-induced magnetic switching in the plane perpendicular…

Mesoscale and Nanoscale Physics · Physics 2015-06-05 Chenglong Jia , Alexander Sukhov , Paul P. Horley , Jamal Berakdar

We investigated the effect of an electric field on the interface magnetic anisotropy of a thin MgO/Fe/MgO layer using density functional theory. The perpendicular magnetic anisotropy energy (MAE) increases not only under electron depletion…

Materials Science · Physics 2015-06-23 Daiki Yoshikawa , Masao Obata , Yusaku Taguchi , Shinya Haraguchi , Tatsuki Oda

We propose that a high-quality flat interface or boundary can serve as a long-range skew scatterer for charged quasiparticles in a metal. When an electric current flows parallel to the interface, the balance between clockwise and…

Mesoscale and Nanoscale Physics · Physics 2025-03-18 J. Voss , I. A. Ado , M. Titov

The signature of magnetism without a ferromagnet in a non-magnetic heterostructure is novel as well as fascinating from fundamental research point of view. It has been shown by Al'Mari et al: that magnetism can be induced at the interface…

Materials Science · Physics 2021-04-07 Purbasha Sharangi , Pierluigi Gargiani , Manuel Valvidares , Subhankar Bedanta