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Related papers: Giant Magnetoresistance in Multilayers with Noncol…

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We examine transport properties of a magnetic superlattice with current perpendicular to the planes. In the limit that the phase-breaking and spin flip scattering lengths are greater than the system size, a multiple-scattering approach is…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 R. Seviour , S. Sanvito , C. J. Lambert , J. H. Jefferson

We study the role of diamagnetic effects on the transport properties of metallic magnetic multilayers to elucidate whether they can explain the Giant Magnetoresistance (GMR) effect observed in those systems. Realistic Fermi surface…

Materials Science · Physics 2007-05-23 W. Tavera , G. G. Cabrera

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

We study theoretically the resistance at the interface between the two planar systems with different lattice constants a and b. The resistance and the effect of the magnetic field depends sensitively on the ratio a/b. The size of the…

Mesoscale and Nanoscale Physics · Physics 2013-03-01 Daichi Asahi , Naoto Nagaosa

The interlayer magnetoresistance of a quasi-two-dimensional layered metal with a d-wave pseudogap is calculated semiclassically. An expression for the interlayer resistivity as a function of the strength and direction of the magnetic field,…

Strongly Correlated Electrons · Physics 2009-06-08 M. F. Smith , Ross H. McKenzie

The maximum current-perpendicular-to-plane giant magnetoresistance is searched for in magnetic multilayers made of Co, Ni, and Cu with disorder levels similar to those found in room temperature experiments. The calculation is made possible…

Materials Science · Physics 2007-05-23 Tat-Sang Choy , Jian Chen , Selman Hershfield

We consider mechanism of exchange coupling based on interaction between electrons in nonmagnetic layer. Depending on ratio of inverse time of diffusion of electrons between ferromagnetic layers and ferromagnetic splitting of conducting…

Mesoscale and Nanoscale Physics · Physics 2009-09-29 Zyuzin A. Yu

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 present a theoretical analysis of recent experimental measurements of magnetoresistance in (Ga,Mn)As epilayers with perpendicular magnetic anisotropy. The model reproduces the field-antisymmetric anomalies observed in the longitudinal…

Materials Science · Physics 2009-11-13 G. Xiang , N. Samarth

We present the quantum-mechanical calculations of the angular dependence of interlayer conductivity $\sigma _{zz}(\theta )$ in a tilted magnetic field in quasi-2D layered metals. Our calculation shows that the LL shape is important for this…

Strongly Correlated Electrons · Physics 2018-07-19 Taras I. Mogilyuk , Pavel D. Grigoriev

The propensity of some materials and multilayers to have a magnetic field dependent resistance, called magnetoresistance, has found commercial applications such as giant magnetoresistance harddisk read heads. But magnetoresistance can also…

Mesoscale and Nanoscale Physics · Physics 2014-12-15 D. P. Leusink , R. G. J. Smits , P. Ngabonziza , X. L. Wang , S. Wiedmann , U. Zeitler , A. Brinkman

We address two finite size effects in perpendicular transport through magnetic multilayers. When the magnetic layer thickness in spin valves becomes of the order or smaller than the spin-flip diffusion length, structural asymmetries affect…

Mesoscale and Nanoscale Physics · Physics 2015-06-25 Alexey A. Kovalev , Gerrit E. W. Bauer , Arne Brataas

We find there are at least two different steady states for transport across noncollinear magnetic multilayers. In the conventional one there is a discontinuity in the spin current across the interfaces which has been identified as the…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Peter M Levy , Jianwei Zhang

This paper has two parts. The first part uses a single point of view to discuss the reflection and averaging mechanisms of spin-transfer between current-carrying electrons and the ferromagnetic layers of magnetic/non-magnetic…

Materials Science · Physics 2009-11-07 M. D. Stiles , A. Zangwill

Transport properties of magnetic multilayers in current perpendicular to the plane of the layers geometry are defined by diffusive scattering in the bulk of the layers, and diffusive and ballistic scattering across the interfaces. Due to…

Materials Science · Physics 2016-08-31 Asya Shpiro

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

We report the large linear magnetoresistance ($\sim 300\%$ in 9 T field at 2 K) and magnetothermopower in layered SrZnSb$_2$ crystal with quasi-two-dimensional Sb layers. A crossover from the semiclassical parabolic field dependent…

Mesoscale and Nanoscale Physics · Physics 2016-04-18 Kefeng Wang , C. Petrovic

Spin spirals form inside the magnetic layers of antiferromagnetic and noncollinearly-coupled magnetic multilayers in the presence of an external magnetic field. This spin structure can be modeled to extract the direct exchange stiffness of…

Mesoscale and Nanoscale Physics · Physics 2024-09-04 Elliot Wadge , Afan Terko , George Lertzman-Lepofsky , Paul Omelchenko , Bret Heinrich , Manuel Rojas , Erol Girt

We present calculations of quantized conductance and magnetoresistance in nanosize point contacts between two ferromagnetic metals. When conductance is open for only one conduction electrons spin-projection, the magnitude of…

Materials Science · Physics 2009-11-07 L. R. Tagirov , B. P. Vodopyanov , B. M. Garipov

The longitudinal and transverse resistivities of differently strained (Ga,Mn)As layers are theoretically and experimentally studied as a function of the magnetization orientation. The strain in the series of (Ga,Mn)As layers is gradually…

Materials Science · Physics 2009-04-09 W. Limmer , J. Daeubler , L. Dreher , M. Glunk , W. Schoch , S. Schwaiger , R. Sauer