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We investigate theoretically the spin-independent tunneling magnetoresistance effect in a graphene monolayer modulated by two parallel ferromagnets deposited on a dielectric layer. For the parallel magnetization configuration, Klein…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 F. Zhai , K. Chang

A quasiclassical theory of giant magnetoresistance in nanoscale point contacts between different ferromagnetic metals is developed. The contacts were sorted by three types of mutual positions of the conduction spin-subband bottoms which are…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 A. N. Useinov , R. G. Deminov , L. R. Tagirov , G. Pan

We study the dependence of perpendicular-current magnetoresistance in magnetic multilayers on the angle between the magnetizations of the layers. This dependence varies with the thickness of one of the layers, and is different for…

Materials Science · Physics 2007-05-23 S. Urazhdin , R. Loloee , W. P. Pratt

We study the Giant Magnetoresistance (GMR) ratio in magnetic multiayers with a single superconducting contact in the presence of spin-mixing processes. It has been recently shown that the GMR ratio of magnetic multilayers is strongly…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 F. Taddei , S. Sanvito , C. J. Lambert

We calculate the resistivity and Giant Magnetoresistance (GMR) of a segmented nanowire consisting of two ferromagnetic segments separated by a thin paramagnetic spacer. The quantization of the electron motion due to the small nanowire…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 M. Ye. Zhuravlev , H. O. Lutz , A. V. Vedyayev

From general arguments, it is shown that a magnetic Kronig-Penney model based on the thermodynamics of an Ising model can be used for describing the Colossal Magnetoresistance (CMR) phenomenon. The model considers a tunneling-like…

Statistical Mechanics · Physics 2009-10-31 N. Vandewalle , M. Ausloos , R. Cloots

Magnetic phase transition tunnel magnetoresistance (MPT-TMR) effect with a single magnetic electrode has been investigated by first-principles calculations. The calculations show that the MPT-TMR of FeRh/MgO/Cu tunnel junction can be as…

Materials Science · Physics 2018-05-02 Jia Zhang , X. Z. Chen , C. Song , J. F. Feng , H. X. Wei , Jing-Tao Lü

We theoretically studied spin dependent electron transport perpendicular-to-plain (CPP) in magnetic laminated multilayered structures by using Kubo formalism. We took into account not only bulk scattering, but the interface resistance due…

Materials Science · Physics 2009-11-10 A. Vedyayev , I. Zhukov , B. Dieny

A linear unsaturating magnetoresistance at high perpendicular magnetic fields, together with a quadratic positive magnetoresistance at low fields, has been seen in many different experimental materials, ranging from silver chalcogenides and…

Mesoscale and Nanoscale Physics · Physics 2017-12-20 Navneeth Ramakrishnan , Ying Tong Lai , Silvia Lara , Meera M. Parish , Shaffique Adam

Colossal magnetoresistance (CMR) is commonly observed in magnetic semiconductors when an external magnetic field is applied, usually accompanied by anomalous resistivity peaks or humps which were previously considered as evidence of a…

Materials Science · Physics 2025-03-26 Zhihao Liu , Zhong Fang , Hongming Weng , Quansheng Wu

All-solid-state nanoscale devices capable of efficiently controlling a heat flow are crucial for advanced thermal management technologies. Here we predict a magnon-driven magnetothermal resistance (mMTR) effect in multilayers of…

Mesoscale and Nanoscale Physics · Physics 2025-07-03 Ping Tang , Ken-ichi Uchida , Gerrit E. W. Bauer

As the growing penetration of inverter-based resources (IBRs) in modern power systems, the system strength is decreasing. Due to the inherent difference in short-circuit capacity contributions of synchronous generators and inverters, the…

Systems and Control · Electrical Eng. & Systems 2026-02-13 Zitian Qiu , Yunjie Gu

Random matrix theory of the transition strengths is applied to transport in the strongly localized regime. The crossover distribution function between the different ensembles is derived and used to predict quantitatively the {\sl universal}…

Condensed Matter · Physics 2009-10-22 Y. Meir , O. Entin-Wohlman

Recent experimental measurements of magnetoresistance in dual spin valves [A. Aziz et al., Phys. Rev. Lett. 103, 237203 (2009)] reveal some nonlinear features of transport, which have not been observed in other systems. We propose a…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 P. Balaz , J. Barnas

Using a quantum theory including spin-splitting effect in diluted magnetic semiconductors, we study the dependence of tunneling magnetoresistance (TMR) on barrier thickness, temperature and applied voltage in GaMnAs/GaAs/GaMnAs…

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

Magnetoresistance (MR) of ion irradiated monolayer graphene samples with variable-range hopping (VRH) mechanism of conductivity was measured at temperatures down to $T = 1.8$ K in magnetic fields up to $B = 8$ T. It was observed that in…

Mesoscale and Nanoscale Physics · Physics 2016-07-14 I. Shlimak , E. Zion , A. V. Butenko , L. Wolfson , V. Richter , Yu. Kaganovskii , A. Sharoni , A. Haran , D. Naveh , E. Kogan , M. Kaveh

We theoretically study the magnetoresistance of a CPP-GMR system with current confined paths (CCP) in the framework of Valet-Fert theory. The continuity equations for charge and spin currents are numerically solved with the…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 Jun Sato , Katsuyoshi Matsushita , Hiroshi Imamura

Spin-dependent transport in a full van der Waals (vdW) giant magnetoresistance (GMR) junctions with the structure of Fe3GeTe2/XTe2/Fe3GeTe2 (X = Pt, Pd) has been investigated by using first-principles calculations. The ballistic…

Materials Science · Physics 2021-10-07 Xinlu Li , Yurong Su , Meng Zhu , Fanxing Zheng , Peina Zhang , Jia Zhang , Jing-Tao Lü

We study an effect of moderate magnetic field on variable range hopping conductivity in arrays of ferromagnetic granules separated by tunnel barriers. It is shown that the resulting magnetoresistance can be significantly larger than the…

Mesoscale and Nanoscale Physics · Physics 2014-02-14 V. I. Kozub , A. V. Shumilin

This work presents a novel method for extracting potential barrier distributions from experimental fusion cross sections. We utilize a simple Gaussian process regression (GPR) framework to model the observed cross sections as a function of…

Nuclear Theory · Physics 2024-06-10 Kyle Godbey