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We consider the magnetic response of a two-dimensional electron gas (2DEG) with a spin-orbit interaction to a long-wave-length electromagnetic excitation. We observe that the transverse electric field creates spin polarization perpendicular…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 Alexander Shnirman , Ivar Martin

We show an application of the functional-renormalization-group aided density functional theory to the homogeneous electron gas with arbitrary spin polarization, which gives the energy density functional in the local spin density…

Strongly Correlated Electrons · Physics 2022-01-12 Takeru Yokota , Tomoya Naito

We propose a simple way of evaluating the bulk spin generation of an arbitrary crystal with a known band structure in the strong spin-orbit coupling limit. We show that, in the presence of an electric field, there exists an intrinsic torque…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Dimitrie Culcer , Yugui Yao , Allan MacDonald , Qian Niu

For a fermion gas with equally spaced energy levels that is subjected to a magnetic field, the particle density is calculated. The derivation is based on the path integral approach for identical particles, in combination with the inversion…

Statistical Mechanics · Physics 2009-10-31 S. Foulon , F. Brosens , J. T. Devreese , L. F. Lemmens

The spin-dependent mobility for the lateral transport of the hole gas in a GaMnAs/GaAs heterostructure containing several metallic-like ferromagnetic layers is calculated. The electronic structure is obtained self-consistently taking into…

Materials Science · Physics 2009-11-07 L. Loureiro da Silva , M. A. Boselli , X. F. Wang , I. C. da Cunha Lima , A. Ghazali

We examine and identify magnetoresistance mechanisms in 2D system containing a sizable concentration of magnetic ions. We argue that some of these mechanisms can serve as a tool to measure spin polarization. Lack of spin degeneracy and…

New efficient mechanism of obtaining spin polarization in_nonmagnetic_ semiconductors at arbitrary temperutures is described. The effect appears during tunneling of electrons from a nonmagnetic semiconductors (S) into ferromagnet (FM)…

Materials Science · Physics 2007-05-23 A. M. Bratkovsky , V. V. Osipov

A $2\times2\times2$ charge density wave (CDW) was recently observed deep inside the antiferromagnetic phase of a Kagome metal FeGe. A key question is whether the CDW in FeGe is driven by its electronic correlation and magnetism. Here, we…

Strongly Correlated Electrons · Physics 2023-11-08 Yilin Wang

In zero magnetic field, conductance measurements of clean one-dimensional (1D) constrictions defined in GaAs/AlGaAs heterostructures show twenty-six quantized ballistic plateaux, as well as a structure close to $0.7(2e^2/h)$. In an in-plane…

Condensed Matter · Physics 2009-10-28 K. J. Thomas , J. T. Nicholls , M. Y. Simmons , M. Pepper , D. R. Mace , D. A. Ritchie

The interplay between spin transport and thermoelectricity offers several novel ways of generating, manipulating, and detecting nonequilibrium spin in a wide range of materials. Here we formulate a phenomenological model in the spirit of…

Mesoscale and Nanoscale Physics · Physics 2012-02-22 B. Scharf , A. Matos-Abiague , I. Žutić , J. Fabian

The effective mass m*, and the Lande g-factor of the uniform 2-D electron fluid (2DEF) are calculated as a function of the spin polarization zeta, and the density parameter r_s, using a non-perturbative analytic approach. Our theory is in…

Strongly Correlated Electrons · Physics 2016-08-31 M. W. C. Dharma-wardana

A systematic investigation of spin injection behavior in Au/FM (FM = Fe and Ni) multilayers is performed using the superdiffusive spin transport theory. By exciting the nonmagnetic layer, the laser-induced hot electrons may transfer spin…

Mesoscale and Nanoscale Physics · Physics 2023-11-20 Wen-Tian Lu , Zhe Yuan , Xiaohong Xu

Using the method of superbosonization we consider a model of a random magnetic field (RMF) acting on both orbital motion and spin of electrons in two dimensions. The method is based on exact integration over one particle degrees of freedom…

Disordered Systems and Neural Networks · Physics 2009-11-10 K. B. Efetov , V. R. Kogan

Measurements of the reflectivity of a 2-D electron gas are used to deduce the polarization of the Composite Fermion hole system formed for Landau level occupancies in the regime 1<\nu<2. The measurements are consistent with the formation of…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 R. Chughtai , V. Zhitomirsky , R. J. Nicholas , M. Henini

Spin pumping is becoming an established method to generate voltages from magnetic dynamics. The standard detection method of spin pumping is based on open circuit voltage measurement across ferromagnetic (FM) and non-magnetic (NM)…

Other Condensed Matter · Physics 2019-01-29 K. Rogdakis , N. Alfert , A. Srivastava , J. W. A. Robinson , M. G. Blamire , L. F. Cohen , H. Kurebayashi

We have successfully demonstrated electrical charging using the electromotive force (EMF) generated in a ferromagnetic metal (FM) film under ferromagnetic resonance (FMR). In the case of Ni80Fe20 films, electrical charge due to the EMF…

Materials Science · Physics 2024-06-12 Yuta Nogi , Yoshio Teki , Eiji Shikoh

We study spin-dependent transport in a two-dimensional electron gas subject to an external step-like potential $V(x)$ and irradiated by an electromagnetic field (EF). In the absence of EF the electronic spectrum splits into spin sub-bands…

Mesoscale and Nanoscale Physics · Physics 2009-11-13 M. V. Fistul , K. B. Efetov

We investigated the effect of spin polarization on the structural properties and gradient of electric field (EFG) on Sn, In, and Cd impurity in RSn$_3$ (R=Sm, Eu, Gd) and RIn$_3$ (R=Tm, Yb, Lu) compounds. The calculations were performed…

Strongly Correlated Electrons · Physics 2009-11-13 S. Jalali Asadabadi , H. Akbarzadeh

A vital goal in spintronics is the efficient electrical generation of spin currents, a pursuit that has recently focused on using antiferromagnets (AFMs) as spin current sources. It has been demonstrated that antiferromagnets with broken PT…

Materials Science · Physics 2025-10-07 Meng Zhu , Jianting Dong , Xinlu Li , Jiahao Shentu , Yizhuo Song , Evgeny Y. Tsymbal , Jia Zhang

We report on the spin-polarized electron injection through an Fe(100)/InAs(100) junction. The circularly polarized electroluminescence of injected electrons from epitaxially grown Fe thin film into InAs(100) in an external magnetic field is…