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A novel magnetoresistance effect, due to the injection of a spin-polarized electron current from a dilute magnetic into a non-magnetic semiconductor, is presented. The effect results from the suppression of a spin channel in the…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 G. Schmidt , G. Richter , P. Grabs , C. Gould , D. Ferrand , L. W. Molenkamp

The results of computer simulation of particle motion over the plane with randomly distributed scatters are presented. They are used to analyse the influence of scattering anisotropy on the negative magnetoresistance due to weak…

Condensed Matter · Physics 2007-05-23 A. V. Germanenko , V. A. Larionova , G. M. Minkov , S. A. Negashev

In antiferromagnetic spintronics, it is essential to separate the resistance modifications of purely magnetic origin from other effects generated by current pulses intended to switch the N\'eel vector. We investigate the magnetoresistance…

Materials Science · Physics 2020-07-08 S. Yu. Bodnar , Y. Skourski , O. Gomonay , J. Sinova , M. Kläui , M. Jourdan

Bulk metallic samples were synthesized from different binary powder mixtures consisting of elemental Cu, Co, and Fe using severe plastic deformation. Small particles of the ferromagnetic phase originate in the conductive Cu phase, either by…

Previous studies have shown that type-II magnetic domain contrasts are caused by differences in the backscattering yields of magnetic domains of opposite magnetisation. Imaging the magnetic domains when the magnetisation vectors in the…

Materials Science · Physics 2023-02-27 Tomohito Tanaka , Kazuto Kawakami , Hisashi Mogi , Satoshi Arai

We investigate the effect of an external magnetic field on the physical properties of the acceptor hole states associated with single Mn acceptors placed near the (110) surface of GaAs. Crosssectional scanning tunneling microscopy images of…

The effect of negative magnetoresistance for thin superconducting wire was considered in a simple model. These phenomena originated from competition of two mechanism: fluctuations of the order parameter and quasiparticles charge imbalance…

Superconductivity · Physics 2021-01-28 Boris Ya. Shapiro

We report on giant positive magnetoresistance effect observed in VOx thin films, epitaxially grown on SrTiO3 substrate. The MR effect depends strongly on temperature and oxygen content and is anisotropic. At low temperatures its magnitude…

Strongly Correlated Electrons · Physics 2009-11-10 A. D. Rata , V. Kataev , D. Khomskii , T. Hibma

We predict that singly-occupied carrier traps, produced by electrical stress or irradiation within organic semiconductors, can cause spin blockades and the large room-temperature magnetoresistance known as organic magnetoresistance. The…

Mesoscale and Nanoscale Physics · Physics 2014-10-20 Nicholas J. Harmon , Michael E. Flatté

We predict unidirectional magnetoresistance effects arising in a bilayer composed of a nonmagnetic metal and a ferromagnetic insulator, whereby both longitudinal and transverse resistances vary when the direction of the applied electric…

Mesoscale and Nanoscale Physics · Physics 2025-03-10 M. Mehraeen , Pengtao Shen , Steven S. -L. Zhang

In 3d-electron magnetic systems, the magnetic structures that transform each other by spin rotation have very close degenerate energies due to small spin-orbit coupling and can be easily controlled by chemical substitution and external…

Materials Science · Physics 2025-11-20 Vu Thi Ngoc Huyen , Yuki Yanagi , Michi-To Suzuki

The laser-induced precession of magnetization in (Ga,Mn)As samples with different magnetic anisotropy was studied by the time-resolved magneto-optical method. We observed that the dependence of the precession amplitude on the external…

Materials Science · Physics 2012-12-06 N. Tesarova , E. Rozkotova , H. Reichlova , P. Maly , V. Novak , M. Cukr , T. Jungwirth , P. Nemec

We introduce the notion of inverse effect of magnetostriction for magnetostrictive/piezoelectric heterostructures and study this effect theoretically and experimentally. It is shown that the inverse effect of magnetostriction may crucially…

Materials Science · Physics 2019-05-28 M. Auslender , E. Liverts , B. Zadov , A. Elmalem , A. Zhdanov , A. Grosz , E. Paperno

We report the magnetoresistance and nonlinear Hall effect studies over a wide temperature range in pulsed laser deposited Ni0.07Zn0.93O thin film. Negative and positive contributions to magnetoresistance at high and low temperatures have…

Materials Science · Physics 2017-03-14 Arpana Agrawal , Tanveer A. Darb , R. J. Choudhary , Archana Lakhani , Pranay K. Sen , Pratima Sen

Magnetic axis rotation (MAR) in ferromagnetic (FM) layers is crucial for strain-mediated converse magnetoelectric coupling. Employing the density functional theory (DFT), we computationally study the magnetic anisotropy of selected deformed…

Materials Science · Physics 2022-12-02 Zefeng Cai , Ben Xu

We report on the temperature and electric field driven evolution of the magnetoresistance lineshape at an interface between Ni/AlO$_x$ and Nb-doped SrTiO$_3$. This is manifested as a superposition of the Lorentzian lineshape due to spin…

Materials Science · Physics 2018-07-24 A. Das , S. T. Jousma , A. Majumdar , T. Banerjee

We investigate the anisotropic effect of magnetization plateaus in the antiferromagnetic Heisenberg model on a kagome strip chain. The kagome strip chain Heisenberg model, composed of a hexagonal net of triangles forming five-site unit…

Strongly Correlated Electrons · Physics 2026-01-07 Chiara Bruzzi , Jian-Xin Zhu , Yixuan Huang

In solid state physics, giant magnetoresistance is the large change in electrical resistance due to an external magnetic field. Here we show that giant magnetoresistance is possible in a spin chain composed of weakly interacting layers of…

Strongly Correlated Electrons · Physics 2021-03-18 Kasper Poulsen , Nikolaj T. Zinner

We report the magnetic, thermal, magnetocaloric and transport properties of polycrystalline NdCuSi. The compound shows a weak antiferromagnetic ordering, as confirmed by different measurements. Arrott plots indicate that the magnetic phase…

Strongly Correlated Electrons · Physics 2019-09-19 Sachin Gupta , K. G. Suresh1 , A. K. Nigam

We have performed conductivity measurements on a Si-MOSFET sample with a slot in the upper gate, allowing for different electron densities n_1 and n_2 across the slot. Dynamic longitudinal resistance was measured by a standard lock-in…

Mesoscale and Nanoscale Physics · Physics 2013-10-21 D. I. Golosov , I. Shlimak , A. Butenko , K. -J. Friedland , S. V. Kravchenko