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Composite materials consisting of coupled magnetic and ferroelectric layers hold the promise for new emergent properties such as controlling magnetism with electric fields. Obviously, the interfacial coupling mechanism plays a crucial role…

Using the first-principles spin density functional approach, we have studied magnetism of a new type of all-carbon nanomaterials, i.e., the carbon nanowires inserted into the single-walled carbon nanotubes. It is found that if the 1D carbon…

Materials Science · Physics 2009-11-13 Xiaoping Yang , Jinming Dong

A two-dimensional easy-plane ferromagnetic substrate, interacting with a dipolar tip which is magnetised perpendicular with respect to the easy plane is studied numerically by solving the Landau-Lifshitz Gilbert equation. Due to the…

Other Condensed Matter · Physics 2013-01-23 Martin P. Magiera , Alfred Hucht , Haye Hinrichsen , Silvio R. Dahmen , Dietrich E. Wolf

Strongly-interacting nanomagnetic arrays are ideal systems for exploring reconfigurable magnonics. They provide huge microstate spaces and integrated solutions for storage and neuromorphic computing alongside GHz functionality. These…

Nanobubbles formed in monolayers of transition metal dichalcogenides (TMDCs) on top of a substrate feature localized potentials, in which electrons can be captured. We show that the captured electronic density can exhibit a non-trivial…

Mesoscale and Nanoscale Physics · Physics 2021-12-22 Roberto Rosati , Frank Lengers , Christian Carmesin , Matthias Florian , Tilmann Kuhn , Frank Jahnke , Michael Lorke , Doris E. Reiter

A study of spherical maghemite nanoparticles on a two dimensional triangular array was carried out using a stochastic Landau-Lifshitz-Gilbert (sLLG) approach. The simulation method was first validated with a triangular array of simple…

Mesoscale and Nanoscale Physics · Physics 2019-09-18 B. Alkadour , B. W. Southern , J. P. Whitehead , J. van Lierop

Nanocomposite materials made of block copolymer and nanoparticles display properties which can be different from the purely polymeric matrix. The resulting material is a crossover of the original properties of the block copolymer and the…

Soft Condensed Matter · Physics 2019-11-04 Javier Diaz , Marco Pinna , Andrei V. Zvelindovsky , Ignacio Pagonabarraga

Magnet$/$superconductor hybrids (MSHs) hold the promise to host emergent topological superconducting phases. Both one-dimensional (1D) and two-dimensional (2D) magnetic systems in proximity to s-wave superconductors have shown evidence of…

Antiferromagnets hosting real-space topological spin textures are promising platforms to model fundamental ultrafast phenomena and explore spintronics. However, to date, they have only been fabricated epitaxially on specific…

We study the magnetic field dependence of the dielectric response of large cylindrical molecules such as nanotubes. When a field-induced level crossing takes place, an applied electric field causes a linear instead of the usual quadratic…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Peter Fulde , Alexander Ovchinnikov

We introduce and investigate a coarse-grained model for quasi one-dimensional ferrogels. In our description the magnetic particles are represented by hard spheres with a magnetic dipole moment in their centers. Harmonic springs connecting…

Soft Condensed Matter · Physics 2013-06-04 M. A. Annunziata , A. M. Menzel , H. Löwen

We demonstrate the existence of a helical state in patterned multilayer nanomagnets. The artificial helimagnets consist of a stack of single domain ferromagnetic disks separated by insulating nonmagnetic spacers. The spiral state is shown…

The ubiquitous domain wall kinetics under magnetic field or current application describes the dynamic properties in nanostructured magnets. However, when the geometrical size of a nanomagnetic system is constricted to the limiting domain…

Mesoscale and Nanoscale Physics · Physics 2024-11-18 J. Guo , D. Hill , V. Lauter , L. Stingaciu , P. Zolnierczuk , C. A. Ullrich , D. K. Singh

Through micromagnetic simulations, this work analyzes the stability of Bloch points in magnetic nanospheres and the possibility of using an array of such particles to compose a system with the features of a magnetic trap. We show that a BP…

Mesoscale and Nanoscale Physics · Physics 2024-01-23 F. Tejo , C. Zambrano-Rabanal , V. Carvalho-Santos , N. Vidal-Silva

Three-dimensional topological insulator films in contact with magnetic layers exhibit intriguing magneto-optical and magnetoelectric phenomena, but little is known beyond the linear response regime. We demonstrate that the presence of two…

Mesoscale and Nanoscale Physics · Physics 2015-06-16 A. G. Mal'shukov , Hans Skarsvag , Arne Brataas

Topological spin and polar textures have fascinated people in different areas of physics and technologies. However, the observations are limited in magnetic and solid-state ferroelectric systems. Ferroelectric nematic is the first…

Soft Condensed Matter · Physics 2022-12-22 Jidan Yang , Yu Zou , Wentao Tang , Jinxing Li , Mingjun Huang , Satoshi Aya

A quasiclassical theory of giant magnetoresistance in nanoscale point contacts between different ferromagnetic metals is developed. The contacts were sorted by three types of mutual positions of the conduction spin-subband bottoms which are…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 A. N. Useinov , R. G. Deminov , L. R. Tagirov , G. Pan

The notion of a simple ordered state implies homogeneity. If the order is established by a broken symmetry, elementary Landau theory of phase transitions shows that only one symmetry mode describes this state. Precisely at points of phase…

Strongly Correlated Electrons · Physics 2019-11-13 D. A. Sokolov , N. Kikugawa , T. Helm , H. Borrmann , U. Burkhardt , R. Cubitt , E. Ressouche , M. Bleuel , K. Kummer , A. P. Mackenzie , U. K. Rößler

In a magnetic field, superconductivity is manifested by total magnetic field expulsion (Meissner effect) or by the penetration of integer multiples of the flux quantum {\Phi}_0. Here we present experimental results revealing magnetic…

In real magnets the tendency towards ferromagnetism, promoted by exchange coupling, is usually frustrated by dipolar interaction. As a result, the uniformly ordered phase is replaced by modulated (multi-domain) phases, characterized by…

Statistical Mechanics · Physics 2018-12-26 Sergio A. Cannas , Alessandro Vindigni
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