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Electronic analog of the electro‐optic modulator
Supriyo Datta,Biswajit Das +1 more
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TLDR
In this article, an electron wave analog of the electro-optic light modulator is proposed, where magnetized contacts are used to preferentially inject and detect specific spin orientations.Abstract:
We propose an electron wave analog of the electro‐optic light modulator. The current modulation in the proposed structure arises from spin precession due to the spin‐orbit coupling in narrow‐gap semiconductors, while magnetized contacts are used to preferentially inject and detect specific spin orientations. This structure may exhibit significant current modulation despite multiple modes, elevated temperatures, or a large applied bias.read more
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All-electrical quantum computation with mobile spin qubits
A. E. Popescu,Radu Ionicioiu +1 more
TL;DR: In this article, the authors describe and discuss a solid state proposal for quantum computation with mobile spin qubits in one-dimensional systems, based on recent advances in spintronics, and assess the suitability of various materials currently used in nanotechnology for an actual implementation of their model.
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Time-resolved Dynamics of the Spin Hall Effect
TL;DR: In this paper, the authors demonstrate time-resolved measurement of the dynamics of spin accumulation generated by the extrinsic spin Hall effect in a doped GaAs semiconductor channel.
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Drift–diffusion approach to spin-polarized transport
TL;DR: In this paper, a drift-diffusion equation was developed to describe electron spin polarization density in two-dimensional electron systems, where the Dresselhaus and Rashba spin-orbit coupling mechanisms were taken into consideration, as well as an applied electric field.
Journal ArticleDOI
An array of quantum dots as a spin filter device by using Dicke and Fano effects
TL;DR: A new design of a spin-dependent polarizer based on a quantum dot array coupled to leads is proposed by lifting the spin degeneracy of the carriers in the quantum dots by means of a magnetic field to generate spin-polarized currents.
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Self‐Location and Other‐Location
TL;DR: This article proposed to use multi-centered worlds, which one can think of as a way a group of individuals might be, to characterize the contents of self-locating attitudes like imagining, dreaming, and wishing.
References
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Journal ArticleDOI
Oscillatory effects and the magnetic susceptibility of carriers in inversion layers
TL;DR: In this paper, the spin-orbit interaction Hamiltonian HSO = alpha ( sigma *k) was used to change the usual patterns of B-1-periodic oscillations; some oscillations are strongly suppressed due to the diminishing of the gaps between adjacent levels and new oscillations appear due to intersections of levels.
Journal ArticleDOI
Coupling of electronic charge and spin at a ferromagnetic-paramagnetic metal interface.
Mark Johnson,Robert H. Silsbee +1 more
TL;DR: A new technique to measure conduction electron relaxation times is described, using nonequilibrium magnetization present in a paramagnetic metal can be detected as an open circuit voltage across an interface between the paramagnet and a ferromagnet.
Journal ArticleDOI
Spin splitting in semiconductor heterostructures for B-->0.
TL;DR: This work shows for AlGaAs/GaAs heterostructures how this finite spin splitting at B=0 evolves from the Zeeman splitting for B\ensuremath{
e}0 and predicts a vanishingspin splitting at a finite -magnetic- field \char22{}, which depends on the electron concentration in the inversion layer.
Journal ArticleDOI
On the possibility of transistor action based on quantum interference phenomena
TL;DR: In this article, a theoretical study of quantum interference phenomena in a T-shaped semiconductor structure is presented, and the results resemble the well-known solutions for the electromagnetic field in waveguides with the main difference that penetration of the wave function of the electrons can be controlled by external voltages.
Journal ArticleDOI
Evidence for spin splitting in In x Ga 1-x As/In 0.52 Al 0.48 As heterostructures as B-->0
Biswajit Das,D. C. Miller,Supriyo Datta,Ronald G. Reifenberger,W. P. Hong,P. K. Bhattacharya,Jasprit Singh,M. Jaffe +7 more
TL;DR: In this paper, the splitting in zero magnetic field between the up-and down-spin electrons in a two-dimensional electron gas is obtained for a series of three different modulation-doped heterostructures with high electron densities.