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Applying the linearized Usadel equations, we consider the nucleation of superconductivity in multiply connected mesoscopic superconductor/ferromagnet (S/F) hybrids such as a thin superconducting ring on a ferromagnet with a uniform in-plane…

Superconductivity · Physics 2019-07-17 A. V. Samokhvalov , J. W. A. Robinson , A. I. Buzdin

Heat conduction in ionized plasmas in the presence of magnetic fields is today a fashionable problem. The kinetic theory of plasmas, in the context of non-equilibrium thermodynamics, predicts a Hall-effect-like heat flow due to the presence…

We investigate the dynamics of a charged particle confined to move on a toroidal helix while being driven by an external time-dependent electric field. The underlying phase space is analyzed for linearly and circularly polarized fields. For…

Chaotic Dynamics · Physics 2021-06-02 Ansgar Siemens , Peter Schmelcher

Ensemble averaged high resolution direct numerical simulations of reverse spectral transfer are presented, extending on the many single realization numerical studies done up to now. This identifies this type of spectral transfer as a…

Fluid Dynamics · Physics 2014-11-06 Arjun Berera , Moritz Linkmann

This paper explains the phenomenon of current circulation and the resulting electromagnetic torque generation in electric machines employing delta windings. The description entails a systematic assessment of the electrical and magnetic…

Systems and Control · Electrical Eng. & Systems 2023-10-11 Prerit Pramod

Electron transport through a one-dimensional ring connected with two external leads, in the presence of spin-orbit interaction (SOI) of strength \alpha and a perpendicular magnetic field is studied. Applying Griffith's boundary conditions…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 B. Molnar , F. M. Peeters , P. Vasilopoulos

We study the microscopic mechanism of nucleation of the helical superconducting state maintained by a spin-splitting field and weak Rashba spin-orbit coupling in a 2D superconductor/ferromagnet system and present an exact solution for the…

Superconductivity · Physics 2024-11-04 V. Plastovets , A. Buzdin

Magnetic electric effects in ferromagnetic metals are discussed from the viewpoint of effective spin electromagnetic field that couples to conduction electron spin. The effective field in the adiabatic limit is the spin Berry's phase in…

Mesoscale and Nanoscale Physics · Physics 2016-12-30 Gen Tatara

Non-equilibrium structure formation and conversion of spinning to translational motion of magnetic colloids driven by an external rotating magnetic field in microchannels is studied by particle-based mesoscale hydrodynamics simulations. For…

Mesoscale and Nanoscale Physics · Physics 2011-02-16 Ingo O. Goetze , Gerhard Gompper

We establish quasi-two-dimensional thin films of iron-based superconductors (FeSCs) as a new high-temperature platform for hosting intrinsic time-reversal-invariant helical topological superconductivity (TSC). Based on the combination of…

Superconductivity · Physics 2021-04-13 Rui-Xing Zhang , S. Das Sarma

The neutrals in the Earth environment are in fact free and subjected to drag forces (by ions). In this study we show that drag or friction forces in the ionosphere-thermosphere system initiate changes in the plasma flow, neutral wind, and…

Space Physics · Physics 2014-04-01 Petko Nenovski

A mechanism is proposed for manipulating the magnetic state of a helical spin density wave using a current. In this paper, we show that a current through a bulk system with a helical spin density wave induces a spin transfer torque, giving…

Materials Science · Physics 2009-11-11 Ola Wessely , Bjorn Skubic , Lars Nordstrom

A longitudinal electric field is used to control the transit time (through an undoped silicon vertical channel) of spin-polarized electrons precessing in a perpendicular magnetic field. Since an applied voltage determines the final spin…

Materials Science · Physics 2009-11-13 Biqin Huang , Douwe J. Monsma , Ian Appelbaum

The inverse cascade of magnetic energy occurs when helicity or rotational instability exists in the magnetohydrodynamic (MHD) system. This well known phenomenon has been considered as a basis for the large scale magnetic field in universe.…

Plasma Physics · Physics 2016-02-16 Kiwan Park

The well-known Hall effect describes the transverse deflection of charged particles (electrons or holes) in an electric-current carrying conductor under the influence of perpendicular magnetic fields, as a result of the Lorentz force.…

Magnetic recording using circularly polarized femto-second laser pulses is an emerging technology that would allow write speeds much faster than existing field driven methods. However, the mechanism that drives the magnetization switching…

Mesoscale and Nanoscale Physics · Physics 2017-06-19 Matthew O. A. Ellis , Eric E. Fullerton , Roy W. Chantrell

In multiferroic oxides with a transverse helical magnetic order, the magnetization exchange coupling is sinusoidally space-dependent. We theoretically investigate the spin-dependent electron grating effect in…

Mesoscale and Nanoscale Physics · Physics 2012-04-30 Rui Zhu

Electron-magnon coupling at the interface between a normal metal and a magnetically ordered insulator modifies the electrical conductivity of the normal metal, an effect known as spin-Hall magnetoresistance. It can also facilitate…

Mesoscale and Nanoscale Physics · Physics 2026-01-21 Oliver Franke , Duje Akrap , Piet W. Brouwer

We investigate the electron transport properties of a model magnetic molecule formed by two magnetic centers whose exchange coupling can be altered with a longitudinal electric field. In general we find a negative differential conductance…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 Sujeet K. Shukla , Stefano Sanvito

We develop a free-carrier theory of the optical absorption of light carrying orbital angular momentum (twisted light) by bulk semiconductors. We obtain the optical transition matrix elements for Bessel-mode twisted light and use them to…

Other Condensed Matter · Physics 2011-02-28 G. F. Quinteiro , P. I. Tamborenea
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