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GaMnAs-based magnetic tunnel junction (MTJ) devices are characterized by in-plane and perpendicular-toplane magnetotransport at low temperatures. Perpendicular-to-plane transport reveals the typical tunneling magnetotransport (TMR) signal.…

Mesoscale and Nanoscale Physics · Physics 2015-06-11 Aymen Ben Hamida , Florian Bergmann , Klaus Pierz , Hans Werner Schumacher

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

Magnetic sensors based on the magnetoresistance effects have a promising application prospect due to their excellent sensitivity and advantages in terms of the integration. However, competition between higher sensitivity and larger…

Mesoscale and Nanoscale Physics · Physics 2018-08-01 Xueying Zhang , Nicolas Vernier , Zhiqiang Cao , Qunwen Leng , Anni Cao , Dafine Ravelosona , Weisheng Zhao

Polymer matrix composites embedded with conductive particles are widely utilized for applications that demand stringent control of the effective electrical resistance (or conductivity) of the material. This property is highly sensitive to…

Applied Physics · Physics 2025-07-01 Vinit Vijay Deshpande , Pascal Alexander Happ , Romana Piat

We investigate the tunneling magnetoresistance (TMR) of a bilayer system made of $X$-wave magnets with $X=p,d,f,g,i$, where $X=d,g,i$ corresponds to altermagnets. A universal analytic formula is derived for the TMR ratio. It is proportional…

Mesoscale and Nanoscale Physics · Physics 2026-04-08 Motohiko Ezawa

It is shown that spin valves under suitable symmetry conditions exhibit an ON-OFF response to a spin battery. While a spin valve driven by a charge battery displays the usual GMR (Giant Magneto-Resistance), a pure spin current or pure spin…

Mesoscale and Nanoscale Physics · Physics 2024-11-18 K. -V. Pham

Generative Adversarial Network (GAN) and its variants exhibit state-of-the-art performance in the class of generative models. To capture higher-dimensional distributions, the common learning procedure requires high computational complexity…

Machine Learning · Computer Science 2018-04-02 Xingwei Cao , Xuyang Zhao , Qibin Zhao

It has been observed that in bulk and polycrystalline thin films of collossal magnetoresistive (CMR) materials the magnetoresistance follows a different behaviour compared to single crystals or single crystalline films below the…

Materials Science · Physics 2009-10-31 P. Raychaudhuri , T. K. Nath , A. K. Nigam , R. Pinto

The relation between tunnel magneto-resistance (TMR) and spin polarization is explored for GaMnAs/GaAlAs/GaMnAs structures where the carriers experience strong spin-orbit interactions. TMR is calculated using Landauer approach. The…

Materials Science · Physics 2009-11-10 L. Brey , C. Tejedor , J. Fernández-Rossier

Magnetoresistance is a powerful probe for characterizing the intrinsic physics embedded in materials. Among its various manifestations, linear magnetoresistance has a long history and continues attracting research interest. In contemporary…

Mesoscale and Nanoscale Physics · Physics 2026-02-23 Shuai Li , Huichao Wang

The paper construct a suitable generalized metrical multi-time Lagrange geometrical model for both gravitational and electromagnetic fields, in a general setting. In this construction, the gravitational potentials are described by a…

Differential Geometry · Mathematics 2010-07-29 Mircea Neagu

The tunnel magnetoresistance (TMR) in the magnetic tunnel junction (MTJ) with embedded nanoparticles (NPs) was calculated in range of the quantum-ballistic model. The simulation was performed for electron tunneling through the insulating…

Mesoscale and Nanoscale Physics · Physics 2016-03-25 Arthur Useinov , Lin-Xiu Ye , Niazbeck Useinov , Te-Ho Wu , Chih-Huang Lai

In this article, we employ the transfer matrix method to investigate relativistic particles in super-periodic potentials (SPPs) of arbitrary order $n \in I^{+}$. We calculate the reflection and transmission probabilities for spinless Klein…

Mesoscale and Nanoscale Physics · Physics 2026-04-06 Sudhanshu Shekhar , Bhabani Prasad Mandal , Anirban Dutta

Multiscale phenomena which include several processes occuring simultaneously at different length scales and exchanging energy with each other, are widespread in magnetism. These phenomena often govern the magnetization reversal dynamics,…

Materials Science · Physics 2009-10-31 V. V. Dobrovitski , M. I. Katsnelson , B. N. Harmon

Thermal vector potential formulation is applied to study thermal dynamics of magnetic structures in insulating ferromagnets. By separating variables of the magnetic structure and magnons, the equation of motion for the structure including…

Mesoscale and Nanoscale Physics · Physics 2015-08-12 Gen Tatara

To optimize the design of STT-MRAM (spin-transfer torque magnetic random access memory), it is necessary to be able to predict switching (error) rates. For small elements, this can be done using a single-macrospin theory since the element…

Materials Science · Physics 2016-04-15 P. B. Visscher , Kamaram Munira , Robert J. Rosati

The giant magnetoresistance (GMR) and structure was investigated for electrodeposited Co/Cu multilayers prepared by a conventional galvanostatic/potentiostatic pulse combination from a pure sulfate electrolyte with various layer…

Materials Science · Physics 2017-02-06 N. Rajasekaran , J. Mani , B. G. Tóth , G. Molnár , S. Mohan , L. Péter , I. Bakonyi

We consider the electronic transport in bounded semiconductors in the presence of an external magnetic field. Taking into account appropriate boundary conditions for the current density at the contacts, a change in the magnetoresistance of…

Condensed Matter · Physics 2009-10-28 G. Gonzalez de la Cruz , Yu. G. Gurevich , V. V. Prosentsov

The relevance of pair-breaking by exchange and dipolar fields, and by injected spins in a low carrier density cuprate Y$_{1-x}$Pr$_x$Ba$_2$Cu$_3$O$_7$ sandwiched between two ferromagnetic La$_{2 / 3}$Sr$_{1 / 3}$MnO$_{3}$ layers is…

Superconductivity · Physics 2011-08-01 Soumen Mandal , R. C. Budhani , Jiaqing He , Y. Zhu

Magnetic noise spectroscopy provides a noninvasive probe of spin dynamics in magnetic materials. We consider two-dimensional magnetically ordered insulators with magnon excitations, especially those supporting long-distance magnon…

Mesoscale and Nanoscale Physics · Physics 2022-05-25 Haocheng Fang , Shu Zhang , Yaroslav Tserkovnyak
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