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We study the effect of magnetic scattering on transport in a system with strong structural disorder, using exact finite size calculation of the low frequency optical conductivity. At weak electron-spin coupling spin disorder leads to a…

Disordered Systems and Neural Networks · Physics 2009-11-10 Sanjeev Kumar , Pinaki Majumdar

Manifestations of quantum interference effects in macroscopic objects are rare. Weak localization is one of the few examples of such effects showing up in the electron transport through solid state. Here we show that weak localization…

Mesoscale and Nanoscale Physics · Physics 2018-08-02 V. V. Belykh , A. Yu. Kuntsevich , M. M. Glazov , K. V. Kavokin , D. R. Yakovlev , M. Bayer

Theory of weak localization in two-dimensional high-mobility semiconductor systems is developed with allowance for the spin-orbit interaction. The obtained expressions for anomalous magnetoresistance are valid in the whole range of…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 M. M. Glazov , L. E. Golub

Weak localization corrections to conductivity of ferromagnetic systems are studied theoretically in the case when spin-orbit interaction plays a significant role. Two cases are analyzed in detail: (i) the case when the spin-orbit…

Materials Science · Physics 2009-11-07 V. K. Dugaev , P. Bruno , J. Barnas

Theory of interference-induced quantum corrections to conductivity is developed for two dimensional systems with chiral spin textures including skyrmions. The effect of exchange interaction between electrons and spin textures on weak…

Mesoscale and Nanoscale Physics · Physics 2019-07-24 K. S. Denisov , L. E. Golub

Artificial confinement of electrons by tailoring the layer thickness has turned out to be a powerful tool to harness control over competing phases in nano-layers of complex oxides. We investigate the effect of dimensionality on transport…

Strongly Correlated Electrons · Physics 2021-03-11 Subhadip Jana , Shwetha G. Bhat , B. C. Behera , L. Patra , P. S. Anil Kumar , B. R. K. Nanda , D. Samal

Weak localization and weak anti-localization are quantum interference effects in quantum transport in a disordered electron system. Weak anti-localization enhances the conductivity and weak localization suppresses the conductivity with…

Mesoscale and Nanoscale Physics · Physics 2014-09-05 Hai-Zhou Lu , Shun-Qing Shen

The magnetoresistance associated with quantum interference corrections in a high mobility, gated InGaAs/InP quantum well structure is studied as a function of temperature, gate voltage, and angle of the tilted magnetic field. Particular…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 S. A. Studenikin , P. T. Coleridge , N. Ahmed , P. Poole , A. Sachrajda

We formulate a quantitative theory of non-local electron transport in three-terminal disordered ferromagnet-superconductor-ferromagnet structures. We demonstrate that magnetic effects have different implications: While strong exchange field…

Superconductivity · Physics 2010-07-29 Mikhail S. Kalenkov , Andrei D. Zaikin

Topological materials have attracted considerable experimental and theoretical attention. They exhibit strong spin-orbit coupling both in the band structure (intrinsic) and in the impurity potentials (extrinsic), although the latter is…

Mesoscale and Nanoscale Physics · Physics 2017-08-17 Weizhe Edward Liu , Ewelina M. Hankiewicz , Dimitrie Culcer

We report the observation of negative magnetoresistance in the ferromagnetic semiconductor GaMnAs at low temperatures ($T<3$ K) and low magnetic fields ($0< B <20$ mT). We attribute this effect to weak localization. Observation of weak…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 L. P. Rokhinson , Y. Lyanda-Geller , Z. Ge , S. Shen , X. Liu , M. Dobrowolska , J. K. Furdyna

Quantum corrections to electrical resistance can serve as sensitive probes of the magnetic landscape of a material. For example, interference between time-reversed electron paths gives rise to weak localization effects, which can provide…

Materials Science · Physics 2021-03-31 Xinxin Cai , Jin Yue , Peng Xu , Bharat Jalan , Vlad S. Pribiag

Recent studies on the electrical switching of tetragonal antiferromagnet (AFM) via N{\'e}el spin-orbit torque have paved the way for the economic use of antiferromagnetic materials. The most difficult obstacle that presently limits the…

Materials Science · Physics 2020-02-04 Xing-Tao Jia , Xiao-Lin Cai , Yu Jia

The spin-orbit field and interfacial exchange field are two major interface phenomena, and the detection and manipulation of these fields can enable a variety of nanoscale spintronics devices. Optimizing the interfacial exchange field,…

Mesoscale and Nanoscale Physics · Physics 2025-06-24 Prasanta Muduli , Naëmi Leo , Mingran Xu , Zheng Zhu , Jorge Puebla , Christian Ortiz , Hironari Isshiki , YoshiChika Otani

We introduce a minimal interface-scattering mechanism that produces a sizable anisotropic magnetoresistance (AMR) in metal/ferromagnet bilayers (e.g., Pt/YIG) without invoking bulk spin or orbital Hall currents. In a $\delta$-layer model…

Mesoscale and Nanoscale Physics · Physics 2025-10-17 Ivan Iorsh , Mikhail Titov

The presence of localized spins exerts a strong influence on quantum localization in doped semiconductors. At the same time carrier-mediated interactions between the localized spins are modified or even halted by carriers' localization. The…

Disordered Systems and Neural Networks · Physics 2008-10-20 Tomasz Dietl

The results of magnetoconductivity measurements in GaInAs quantum wells are presented. The observed magnetoconductivity appears due to the quantum interference, which lead to the weak localization effect. It is established that the details…

The question whether the Anderson-Mott localisation enhances or reduces magnetic correlations is central to the physics of magnetic alloys. Particularly intriguing is the case of (Ga,Mn)As and related magnetic semiconductors, for which…

The difference in the density of states for up- and down-spin electrons in a ferromagnet (F) results in spin-dependent scattering of electrons at a ferromagnet / nonmagnetic (F/N) interface. In a F/N/F spin-valve, this causes a…

Superconductivity · Physics 2022-01-07 B. Stoddart-Stones , X. Montiel , M. G. Blamire , J. W. A. Robinson

We study temperature induced metal-insulator transition in doped ferromagnetic semiconductors, described by s-d exchange model. The transition is a result of the mobility edge movement, the disorder being due to magnetic ions spin density…

Condensed Matter · Physics 2007-05-23 Eugene Kogan , Mark Auslender
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