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Coupled quasi-one-dimensional (quasi-1D) electron systems host rich emergent physics that cannot be accounted for by understanding isolated 1D electron systems alone. Open questions remain about how transport in these arrays can be…

Based on ab initio calculations we determine the features and relative stability of different models proposed to describe the $(2 \times 2)$-FeO(111) reconstruction. Our results suggest that both wurtzite and spinel-like environments are…

Strongly Correlated Electrons · Physics 2016-09-21 Ivan Bernal-Villamil , Silvia Gallego

We theoretically predict and experimentally verify the illusion of transforming the magnetic signature of a 3D object into that of another arbitrary object. This is done by employing negative-permeability materials, which we demonstrate…

Materials Science · Physics 2018-03-22 Rosa Mach-Batlle , Albert Parra , Sergi Laut , Nuria Del-Valle , Carles Navau , Alvaro Sanchez

We study perspectives of nanowire metamaterials for negative-refraction waveguides, high-performance polarizers, and polarization-sensitive biosensors. We demonstrate that the behavior of these composites is strongly influenced by the…

We introduce a general framework to study moir\'e structures of two-dimensional Van der Waals magnets using continuum field theory. The formalism eliminates quasiperiodicity and allows a full understanding of magnetic structures and their…

Mesoscale and Nanoscale Physics · Physics 2020-01-10 Kasra Hejazi , Zhu-Xi Luo , Leon Balents

Two-dimensional magnets are promising for nanoscale spintronic applications. Currently, most available candidates are based on $3d$ transition metal compounds, with hexagonal or honeycomb lattice geometry. Here, a GdCl$_3$ monolayer with…

Materials Science · Physics 2022-04-29 Haipeng You , Jun Chen , Jun-Jie Zhang , Ning Ding , Xiwen Zhang , Xiaoyan Yao , Shuai Dong

Magnetization reversal in a ferromagnetic nanowire which is much narrower than the exchange length is believed to be accomplished through the thermally activated growth of a spatially localized nucleus, which initially occupies a small…

Statistical Mechanics · Physics 2007-05-23 Robert S. Maier

Three-dimensional nanostructured functional materials are important systems, allowing new means to intricately control electromagnetic properties. A key problem is realising a 3D printing methodology upon the nanoscale that can yield a…

Mesoscale and Nanoscale Physics · Physics 2021-11-01 Arjen van den Berg , Mylene Caruel , Matthew Hunt , Sam Ladak

Comprehending the interaction between geometry and magnetism in three-dimensional (3D) nanostructures is of importance to understand the fundamental physics of domain wall (DW) formation and pinning. Here, we use focused electron…

Materials Science · Physics 2023-10-31 John Fullerton , Arthur R. C. McCray , Amanda K. Petford-Long , Charudatta Phatak

The paper presents a computational study of the ground-state magnetic phases of a selected bilayer graphene nanoflake in external electric field and magnetic field. The electric field has parallel and perpendicular component while the…

Materials Science · Physics 2017-05-02 Karol Szałowski

In a recent Letter, S. Lounis et al. find that the ground state of finite antiferromagnetic nanowires deposited on ferromagnets depends on the parity of the number N of atoms and that a collinear-noncollinear transition exists for odd N.…

Materials Science · Physics 2008-10-10 Paolo Politi , Maria Gloria Pini

The influence of an external magnetic field upon the capture of 130 nm magnetic nanoparticles (MNPs) by ferromagnetic nanostructures was investigated. The magnetophoretic forces acting upon a nanoparticle were simulated in external magnetic…

Mesoscale and Nanoscale Physics · Physics 2023-08-25 Reyne Dowling , Mikhail Kostylev

Integration of magneto-electric and spintronic sensors presents a massive potential for advancing flexible and wearable technology. Magnetic nanowires are core components for building such devices, and therefore it important to realize…

Mesoscale and Nanoscale Physics · Physics 2020-06-19 Giuseppe Muscas , Petra E. Jönsson , I. G. Serrano , Örjan Vallin , M. Venkata Kamalakar

The effect of the random magnetic field distribution on the phase diagrams and ground state magnetizations of the Ising nanowire is investigated with effective field theory with correlations. Trimodal distribution chosen as a random…

Statistical Mechanics · Physics 2016-08-14 Ümit Akıncı

The absorption of electromagnetic radiation by a planar structure, consisting of a three-layer dielectric-metal-dielectric coating on a metal back-reflector is analysed. The conditions for total absorption are derived. Our analysis shows…

Optics · Physics 2018-08-15 Viacheslav Medvedev , Vladimir Gubarev , Chris Lee

The authors have investigated magnetic domain wall induced capacitance variation as a tool for the detection of magnetic reversal in magnetic nanowires for in-plane (NiFe) and out-of-plane (Co/Pd) magnetization configurations. The switching…

Materials Science · Physics 2015-06-11 Kulothungasagaran Narayanapillai , Mahdi Jamali , Hyunsoo Yang

We study the conformational behavior of a polymer adsorbed at an attractive nanostring and construct the complete structural phase diagram in dependence of the binding strength and effective thickness of the string. For this purpose, Monte…

Soft Condensed Matter · Physics 2011-03-11 Thomas Vogel , Michael Bachmann

Fullerenes have several advantages as potential materials for organic spintronics. Through a theoretical first-principles study, we report that fullerene C$_{60}$ adsorption can induce a magnetic reconstruction in a Ni(111) surface and…

Mesoscale and Nanoscale Physics · Physics 2015-07-31 R. Pang , X. Shi , M. A. van Hove

During the past ten years nanostructures have been subject of active research. Fabrication of such systems follows well developed methods. The increase in the number of materials available for research and applications requires that the…

Materials Science · Physics 2007-05-23 G. V. Kurlyandskaya , S. M. Bhagat

In this paper we discuss effective material parameter description of new nanostructures designed to perform as artificial magnetic materials for vis- ible light. Among these structures there are various split-ring resonators, dual-bar…

Optics · Physics 2015-05-18 Constantin Simovski , Sergei Tretyakov