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Bilayer van der Waals (vdW) heterostructures such as MoS2/WS2 and MoSe2/WSe2 have attracted much attention recently, particularly because of their type II band alignments and the formation of interlayer exciton as the lowest-energy…

Mesoscale and Nanoscale Physics · Physics 2017-12-14 Shiyuan Gao , Li Yang , Catalin D. Spataru

The possibility of selecting magnetic space groups by orienting the magnetization direction or tuning magnetic orders offers a vast playground for engineering symmetry protected topological phases in magnetic materials. In this work, we…

Mesoscale and Nanoscale Physics · Physics 2024-11-11 Ilyoun Na , Marc Vila , Sinéad M. Griffin

Controlling magnetism and electronic properties of two-dimensional (2D) materials by purely electrical means is crucial and highly sought for high-efficiency spintronics devices since electric field can be easily applied locally compared…

Materials Science · Physics 2022-05-18 Yu Chen , Qiang Fan , Yiding Liu , Gang Yao

Spin currents can modify the magnetic state of ferromagnetic ultrathin films through spin-orbit torque. They may be generated by means of spin-orbit interaction by either bulk or interfacial phenomena. Electrical transport measurements…

Mesoscale and Nanoscale Physics · Physics 2022-06-27 A. Anadón , R. Guerrero , J. A. Jover-Galtier , A. Gudín , J. M. Díez , P. Olleros-Rodríguez , R. Miranda , J. Camarero , P. Perna

Stacking-dependent magnetism in two-dimensional van der Waals materials offers an effective route for controlling magnetic order without chemical modification. Here, we present a combined first-principles and finite-temperature study of…

Materials Science · Physics 2026-05-19 Soumyajit Sarkar , Soham Chandra

Manipulating magnetic anisotropy (MA) purposefully in transition metal oxides (TMOs) enables the development of oxide-based spintronic devices with practical applications. Here, we report a pathway to reversibly switch the lateral magnetic…

Employing density functional theory-based methods, we investigate monolayer and bilayer structures of hexagonal SnS$_{2}$, which is recently synthesized monolayer metal dichalcogenide. Comparison of 1H and 1T phases of monolayer SnS$_{2}$…

Mesoscale and Nanoscale Physics · Physics 2016-03-14 C. Bacaksiz , S. Cahangirov , A. Rubio , R. T. Senger , F. M. Peeters , H. Sahin

By means of spin-polarized low-energy electron microscopy (SPLEEM) we show that the magnetic easy-axis of one to three atomic-layer thick cobalt films on ruthenium crystals changes its orientation twice during deposition: one-monolayer and…

The exchange coupling underlies ferroic magnetic coupling and is thus the key element that governs statics and dynamics of magnetic systems. This fundamental interaction comes in two flavors - symmetric and antisymmetric coupling. While…

Magnetism in transition metal compounds is usually considered starting from a description of isolated ions, as exact as possible, and treating their (exchange) interaction at a later stage. We show that this standard approach may break down…

Strongly Correlated Electrons · Physics 2016-10-24 S. V. Streltsov , D. I. Khomskii

The interlayer coupling in van der Waals heterostructures governs a variety of optical and electronic properties. The intrinsic dipole moment of Janus transition metal dichalcogenides (TMDs) offers a simple and versatile approach to tune…

In this study, we explore the influence of interlayer exchange coupling on magnetization reversal triggered by femtosecond laser pulses in ferromagnetic spin valves. Our experiments, focused on femtosecond laser-induced magnetization…

We present a laterally resolved X-ray magnetic dichroism study of the magnetic proximity effect in a highly ordered oxide system, i.e. NiO films on Fe3O4(110). We found that the magnetic interface shows an ultrasharp electronic, magnetic…

Materials Science · Physics 2008-01-10 I. P. Krug , F. U. Hillebrecht , H. Gomonaj , M. Haverkort , A. Tanaka , L. H. Tjeng , C. M. Schneider

We study how a bias voltage changes magnetic exchange interactions. We derive a general expression for magnetic exchange interactions for systems coupled to reservoirs under a bias potential, and apply it to spin valves. We find that for…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Paul M. Haney , Christian Heiliger , Mark D. Stiles

The manipulation of the antiferromagnetic interlayer coupling in the epitaxial Fe/Cr/Fe(001) trilayer system by moderate 5 keV He ion beam irradiation has been investigated experimentally. It is shown that even for irradiation with very low…

The influence of dynamic interlayer interactions on the spin torque driven and damped excitations are illustrated for a three layer macrospin model system that corresponds to a standard spin-torque oscillator. The free layer and a synthetic…

Mesoscale and Nanoscale Physics · Physics 2017-04-05 M. Romera , E. Monteblanco , F. Garcia-Sanchez , B. Delaet , L. D. Buda-Prejbeanu , U. Ebels

The recent advent of artificial structures has triggered the emergence of fascinating phenomena that could not exist in natural compounds. A prime example is twisted multilayers, i.e., moir\'e superlattices represented by magic-angle…

Superconductivity · Physics 2024-11-13 Shun Asano , Youichi Yanase

The atomic thickness of two-dimensional (2D) materials provides a unique opportunity to control material properties and engineer new functionalities by electrostatic doping. Electrostatic doping has been demonstrated to tune the electrical…

Materials Science · Physics 2018-08-01 Shengwei Jiang , Lizhong Li , Zefang Wang , Kin Fai Mak , Jie Shan

Magnetic complex-oxide heterostructures are of keen interest because a wealth of phenomena at the interface of dissimilar materials can give rise to fundamentally new physics and potentially valuable functionalities. Altered magnetization,…

Materials Science · Physics 2015-09-04 Yaohua Liu , Xianglin Ke

Interfacial perpendicular magnetic anisotropy, which is characterized by the first-order (K1) and second-order (K2) anisotropies, is the core phenomenon for nonvolatile magnetic devices. A sizable K2 satisfying a specific condition…

Materials Science · Physics 2019-06-21 Hyung Keun Gweon , Hyeon-Jong Park , Kyoung-Whan Kim , Kyung-Jin Lee , Sang Ho Lim