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The effect of electric field, applied on systems in the nanoscale regime has attracted a lot of research in recent times. We highlight some of the recent results in the field of single molecule electronics and then move on to focus on some…

Materials Science · Physics 2008-10-11 S. Lakshmi , Sudipta Dutta , Swapan K. Pati

To make certain quantitative interpretations of spectra from NMR experiments carried out on heterogeneous samples, such as cells and tissues, we must be able to estimate the magnetic and electric fields experienced by the resonant nuclei of…

Chemical Physics · Physics 2007-05-23 C. J. Durrant , M. P. Hertzberg , P. W. Kuchel

Hard/soft magnetic bilayer thin films have been widely used in data storage technologies and permanent magnet applications. The magnetic configuration and response to temperatures and magnetic fields in these heterostructures are considered…

To advance the use of thermally-activated magnetic materials in device applications it is necessary to examine their behaviour on the localised scale in operando conditions. Equi-atomic FeRh undergoes a magnetostructural transition from an…

In the majority of magnetic systems the surface is required to order at the same temperature as the bulk. In the present study, we report a distinct and unexpected surface magnetic phase transition, uniquely at a lower temperature than the…

Patterning nanomagnets in three-dimensions presents a new paradigm in condensed matter physics and allows access to a plethora of fundamental phenomena including robust spin textures, magnetic metamaterials that are home to defects carrying…

Mesoscale and Nanoscale Physics · Physics 2018-12-07 Andrew May , Matthew Hunt , Arjen Van Den Berg , Alaa Hejazi , Sam Ladak

We use the phase-field method to study the martensitic transformation at the nanoscale. For nanosystems such as nanowires and nanograins embedded in a stiff matrix, the geometric constraints and boundary conditions have an impact on…

Materials Science · Physics 2008-07-23 Mathieu Bouville , Rajeev Ahluwalia

The study of 3D magnetic nanostructures has uncovered a range of rich phenomena including the stabilization and control of topological spin textures using nanoscale curvature, dynamic effects allowing controlled spin-wave emission, and…

Mesoscale and Nanoscale Physics · Physics 2024-03-08 Joseph Askey , Matthew Oliver Hunt , Lukas Payne , Arjen van den Berg , Ioannis Pitsios , Alaa Hejazi , Wolfgang Langbein , Sam Ladak

We exploit the intrinsic structural instability of the Fe70Pd30 magnetic shape memory alloy to obtain functional epitaxial films exhibiting a self-organized nanostructure. We demonstrate that coherent epitaxial straining by 54% is possible.…

Mesoscale and Nanoscale Physics · Physics 2012-05-30 Sandra Kauffmann-Weiss , Markus E. Gruner , Anja Backen , Ludwig Schultz , Peter Entel , Sebastian Fähler

In several parent iron-pnictide compounds the resistivity has an extended range of linear magnetic field dependence. We argue that there is a simple and natural explanation of this behavior. Spin density wave transition leads to…

Superconductivity · Physics 2013-09-02 A. E. Koshelev

Nanomagnets form the building blocks for a gamut of miniaturized energy-efficient devices including data storage, memory, wave-based computing, sensors and biomedical devices. They also offer a span of exotic phenomena and stern challenges.…

Mesoscale and Nanoscale Physics · Physics 2020-12-02 Anjan Barman , Sucheta Mondal , Sourav Sahoo , Anulekha De

For nanostructured materials, strain is of fundamental importance in stabilizing a specific crystallographic phase, modifying electronic properties, and in consequence their magnetism when it applies. Here we describe a magnetic shape…

Mesoscale and Nanoscale Physics · Physics 2010-10-07 C. Echeverría-Arrondo , J. Pérez-Conde , A. Ayuela

We investigate the influence of periodic surface roughness in thin ferromagnetic films on shape anisotropy and magnetization behavior inside the ferromagnet. Starting from the full micromagnetic energy and using methods of homogenization…

Mathematical Physics · Physics 2017-11-22 Massimiliano Morini , Valeriy Slastikov

In this article, we propose a concise theoretical framework based on mixed field-susceptibilities to describe the decay of magnetic dipoles induced by non--magnetic nanostructures. This approach is first illustrated in simple cases in which…

Atomic and electronic structures of phosphorene nanoribbons are studied within density functional theory. These novel materials present different physical phenomena expected in two very different physical systems: one dimensional metallic…

Materials Science · Physics 2014-04-22 Ajanta Maity , Akansha Singh , Prasenjit Sen

The approach to calculating the effective dielectric and magnetic response in bounded composite materials is developed. The method is essentially based on the renormalisation of the dielectric matrix parameters to account for the surface…

Materials Science · Physics 2009-11-07 D. P. Makhnovskiy , L. V. Panina , D. J. Mapps , A. K. Sarychev

Ferromagnetism is typically discussed in terms of the exchange interaction and magnetic anisotropies. Yet real samples are inevitably affected by the magnetostatic dipole-dipole interaction. Because of this interaction, a theorem (R.B.…

Statistical Mechanics · Physics 2025-01-27 D. Pescia , A. Vindigni

Fermi-surface topology governs the relationship between magnetism and superconductivity in iron-based materials. Using low-temperature transport, angle-resolved photoemission, and x-ray diffraction we show unambiguous evidence of large…

Strongly Correlated Electrons · Physics 2014-05-09 K. Gofryk , B. Saparov , T. Durakiewicz , A. Chikina , S. Danzenbächer , D. V. Vyalikh , M. J. Graf , A. S. Sefat

Magnetic domain walls (DWs) in nanostructures are low-dimensional objects that separate regions with uniform magnetisation. Since they can have different shapes and widths, DWs are an exciting playground for fundamental research, and became…

Mesoscale and Nanoscale Physics · Physics 2015-09-17 V. D. Nguyen , O. Fruchart , S. Pizzini , J. Vogel , J. -C. Toussaint , N. Rougemaille

All-electrical and programmable manipulations of ferromagnetic bits are highly pursued for the aim of high integration and low energy consumption in modern information technology. Methods based on the spin-orbit torque switching in heavy…