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The transfer matrix method (TMM) is widely used to analyze the transport properties of one-dimensional or quasi-one-dimensional systems, such as nanostructures and layered materials in spintronics. However, its application in quantifying…

Mesoscale and Nanoscale Physics · Physics 2024-11-12 Qiang Kang , Chenguang Hu

We analyze the low-energy e-N2 collisions within the framework of the Modified-Effective Range Theory (MERT) for the long-range potentials, developed by O'Malley, Spruch and Rosenberg [Journal of Math. Phys. 2, 491 (1961)]. In comparison to…

Atomic Physics · Physics 2009-11-13 Zbigniew Idziaszek , Grzegorz Karwasz

The temperature and voltage dependence of spin transport is theoretically investigated in a new type of magnetic tunnel junction, which consists of two ferromagnetic outer electrodes separated by a ferromagnetic barrier and a nonmagnetic…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 Ali A. Shokri , Alireza Saffarzadeh

The power loss and electromagnetic energy density of a metamaterial consisting of arrays of wires and split-ring resonators (SRRs) are investigated. We show that a field energy density formula can be derived consistently from both the…

Mesoscale and Nanoscale Physics · Physics 2015-05-14 Pi-Gang Luan

The balance between low power consumption and high efficiency in memory devices is a major limiting factor in the development of new technologies. Magnetic random access memories (MRAM) based on CoFeB/MgO magnetic tunnel junctions (MTJs)…

Materials Science · Physics 2020-08-24 Andrea Meo , Roman Chepulskyy , Dmytro Apalkov , Roy W. Chantrell , Richard F. L. Evans

As an unconventional magnet, altermagnetism attracts great interest in condensed matter physics and applies a new research platform for the spintronics. Since the tunneling magnetoresistance (TMR) effect is an important research aspect in…

Mesoscale and Nanoscale Physics · Physics 2025-09-09 Yu-Fei Sun , Yue Mao , Yu-Chen Zhuang , Qing-Feng Sun

A rotating particle in electrorheological (ER) fluid leads to a displacement of its polarization charges on the surface which relax towards the external applied field ${\bf E}_0$, resulting in a steady-state polarization at an angle with…

Chemical Physics · Physics 2008-05-30 J. J. Xiao , J. P. Huang , K. W. Yu

We study the giant magnetoresistance of nanogranular magnets in the presence of an external magnetic field and finite temperature. We show that the magnetization of arrays of nanogranular magnets has hysteretic behaviour at low temperatures…

Strongly Correlated Electrons · Physics 2009-11-13 A. Glatz , I. S. Beloborodov , V. M. Vinokur

This work demonstrated two different kinds of magneto-transport behaviors in epitaxial $L1_{0}$ MnAl film as a function of temperature. The magneto-resistance ratio (MR) was negative and exhibited evident enhancement in the resistivity at…

Mesoscale and Nanoscale Physics · Physics 2016-10-26 Linqiang Luo , Nattawut Anuniwat , Nam Dao , Yishen Cui , Stuart A. Wolf , Jiwei Lu

We show that the axial component of the magnetic permeability tensor is resonant for a wire medium consisting of high-index epsilon-positive nanowires, and its real part changes the sign at a certain frequency. At this frequency the medium…

Mesoscale and Nanoscale Physics · Physics 2016-09-21 M. S. Mirmoosa , S. Yu. Kosulnikov , C. R. Simovski

Anisotropic magnetoresistance (AMR), originating from spin-orbit coupling (SOC), is the sensitivity of the electrical resistance in magnetic systems to the direction of spin magnetization. Although this phenomenon has been experimentally…

Materials Science · Physics 2020-08-12 Dongzhe Li , Fabian Pauly , Alexander Smogunov

The E2/M1 ratio (EMR) of the $\Delta$(1232) is extracted from the world data in pion photoproduction by means of an Effective Lagrangian Approach (ELA).This quantity has been derived within a crossing symmetric, gauge invariant, and chiral…

Nuclear Theory · Physics 2007-05-23 C. Fernandez-Ramirez , E. Moya de Guerra , J. M. Udias

Negative longitudinal magnetoresistance (NLMR) has been reported in a variety of materials and has attracted extensive attention as an electrotransport hallmark of topological Weyl semimetals. However, its origin is still under debate.…

We study the electron spin resonance (ESR) of low-dimensional spin systems at high temperature, and test the Kubo-Tomita theory of exchange narrowing. In finite-size systems (molecular magnets), we found a double-peak resonance which…

Strongly Correlated Electrons · Physics 2015-05-18 S. El Shawish , O. Cepas , S. Miyashita

The results of large-scale simulations investigating the dynamics of magnetization reversal in arrays of single-domain nanomagnets after a rapid reversal of the applied field at nonzero temperature are presented. The numerical micromagnetic…

Materials Science · Physics 2009-10-31 Gregory Brown , M. A. Novotny , Per Arne Rikvold

In the present paper influence of tensor electric and magnetic polarizabilities on spin evolution in the resonance deuteron EDM experiment is considered in details. It is shown that besides EDM the electric and magnetic polarizabilities…

High Energy Physics - Phenomenology · Physics 2007-05-23 V. G. Baryshevsky

Magnetically doped nanostructures can significantly enhance the interaction between the band carriers and the dopant atoms. Motivated by the demonstration of the enhanced sp-d exchange interaction in quantum confined structures with the…

Mesoscale and Nanoscale Physics · Physics 2023-01-02 Kalpana Panneerselvam , Bhaskaran Muralidharan

This study calculated the magnetoresistance (MR) in the Dirac electron system, Dressellhaus-Kip-Kittel (DKK) model, and nodal-line semimetals based on the semiclassical Boltzmann theory, with particular focus on the detailed energy…

Mesoscale and Nanoscale Physics · Physics 2023-03-14 Yudai Awashima , Yuki Fuseya

We report on the low temperature tunnel magnetoresistance (MR) in quasi one-dimensional (1D) nanofibers made of conjugated polymers. The MR voltage bias dependence reveals an enhancement (at low biases) and the oscillatory behavior at…

Statistical Mechanics · Physics 2009-12-09 H. J. Lee , A. N. Aleshin , S. H. Jhang , H. S. Kim , M. J. Goh , K. Akagi , J. S. Brooks , Y. W. Park

We present a numerical study of the electromagnetic response of the metamaterial elements that are usedto construct materials with negative refractive index. For an array of split ring resonators (SRR) we find that the resonant behavior of…

Materials Science · Physics 2009-11-10 T. Koschny , P. Markos , D. R. Smith , C. M. Soukoulis
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