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Recently, a novel magnetic levitation phenomenon involving two magnetically equivalent neodymium permanent magnets has been reported. In this work, we propose that this system functions as a scaled-up analog of the Levitron. The key…

Applied Physics · Physics 2025-10-31 A. Doff , R. M. Szmoski

We propose a new mechanism for binding of two equally charged carriers in a double-layer system subjected by a magnetic field of a special form. A field configuration for which the magnetic fields in adjacent layers are equal in magnitude…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 S. I. Shevchenko , E. D. Vol

Extremely large magnetoresistance (XMR) was recently discovered in many non-magnetic materials, while its underlying mechanism remains poorly understood due to the complex electronic structure of these materials. Here, we report an…

This work investigates the magneto-transport properties of exfoliated NiTe2 nano-flakes with varying thicknesses and disorder levels, unveiling two distinct physical mechanisms governing the observed anisotropic linear magnetoresistance…

Mesoscale and Nanoscale Physics · Physics 2025-12-09 Ding Bang Zhou , Kuang Hong Gao , Tie Lin , Yang Yang , Meng Fan Zhao , Zhi Yan Jia , Xiao Xia Hu , Qian Jin Guo , Zhi Qing Li

We have observed a large positive quasi-classical magneto-resistance (MR) in a high mobility 2D electron gas in AlGaAs/GaAs heterostructure. The magneto-resistance is non-saturating and increases with magnetic field as $\rho_{xx}\sim…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Vincent T. F Renard , Ze Don Kvon , G M Gusev , J. C Portal

We develop the complete theory for the collective plasmon modes of an interacting electron system in the presence of explicit mass (or velocity) anisotropy in the corresponding non-interacting situation, with the effective Fermi velocity…

Mesoscale and Nanoscale Physics · Physics 2021-01-27 Seongjin Ahn , S. Das Sarma

A theory of recently discovered anomalous low-field magnetoresistance is developed for the system of two-dimensional electrons scattered by hard disks of radius $a,$ randomly distributed with concentration $n.$ For small magnetic fields the…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Vadim V. Cheianov , A. P. Dmitriev , V. Yu. Kachorovskii

The resistance of layered conductors with a multisheet Fermi surface (FS), in a high magnetic field, in the immediate vicinity of Lifshic's topological transition when the separate FS sheets are drown together by an external action,…

Mesoscale and Nanoscale Physics · Physics 2014-10-31 O. Galbova , V. Peschansky

We present a comprehensive first-principles study of the magnetoresistance in ZrSi$X$ ($X=$ S, Se, Te) topological nodal-line semimetals. Our study demonstrates that all primary features of the experimentally measured magnetoresistance in…

Materials Science · Physics 2025-10-31 ShengNan Zhang , Oleg V. Yazyev

We study theoretically magnetoresistance (MR) of graphene with different types of disorder. For short-range disorder, the key parameter determining magnetotransport properties---a product of the cyclotron frequency and scattering…

Disordered Systems and Neural Networks · Physics 2014-09-11 P. S. Alekseev , A. P. Dmitriev , I. V. Gornyi , V. Yu. Kachorovskii

Resistive steady states in toroidal magnetohydrodynamics (MHD), where Ohm's law must be taken into account, differ considerably from ideal ones. Only for special (and probably unphysical) resistivity profiles can the Lorentz force, in the…

Plasma Physics · Physics 2009-10-30 David Montgomery , Jason W. Bates , Shuojun Li

Memory effects can have a profound impact on the resistivity of semiconductor systems, resulting in giant negative magnetoresistance and MIRO phenomena. This work opens the discussion of the memory effects in 3D conducting systems featured…

Mesoscale and Nanoscale Physics · Physics 2021-08-11 K. S. Denisov , K. A. Baryshnikov , P. S. Alekseev , N. S. Averkiev

Temperature-dependent resistivity and magnetoresistance are measured in bulk tetragonal phase of antiferromagnetic CuMnAs and the latter is found to be anisotropic both due to structure and magnetic order. We compare these findings to model…

We extend the Mermin-Wagner theorem to a system of lattice spins which are spin-coupled to itinerant and interacting charge carriers. We use the Bogoliubov inequality to rigorously prove that neither (anti-) ferromagnetic nor helical…

Mesoscale and Nanoscale Physics · Physics 2011-09-09 Daniel Loss , Fabio L. Pedrocchi , Anthony J. Leggett

By analyzing the longitudinal conductivity in a quantizing magnetic field directed perpendicularly to the crystal lattice layers, it has been demonstrated that the layered-structure effects can be observed not only in crystals with highly…

Mesoscale and Nanoscale Physics · Physics 2011-02-09 P. V. Gorskyi

Following an extremely interesting idea \cite{R1}, published long ago, the work function associated with the emission of ultra-relativistic electrons from magnetically deformed metallic crystal of astrophysical relevance is obtained using…

Solar and Stellar Astrophysics · Physics 2011-05-31 Arpita Ghosh , Somenath Chakrabarty

In a cold matter universe, the linearized gravito-magnetic tensor field satisfies a transverse condition (vanishing divergence) when it is purely radiative. We show that in the nonlinear theory, it is no longer possible to maintain the…

General Relativity and Quantum Cosmology · Physics 2009-10-31 Carlos Sopuerta , Roy Maartens , George Ellis , William Lesame

Centrifugal acceleration of charged test particles at the base of a rotating jet magnetosphere is considered. Based on an analysis of forces we derive the equation for the radial accelerated motion and present an analytical solution. It is…

Astrophysics · Physics 2009-10-31 F. M. Rieger , K. Mannheim

The existence of helical surface states in a bulk insulator, with anomalous magneto-electric properties, is a remarkable new development in solid state physics. The linear dispersion of the the fermions leads to a form of Lorentz…

Materials Science · Physics 2012-07-10 Huazhou Wei , Sung-Po Chao , Vivek Aji

Lorentz reciprocity establishes a stringent relation between electromagnetic fields and their sources. For static magnetic fields, a relation between magnetic sources and fields can be drawn in analogy to the Green's reciprocity principle…

Classical Physics · Physics 2018-11-28 J. Prat-Camps , P. Maurer , G. Kirchmair , O. Romero-Isart