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We show that Heisenberg exchange interactions between the neighboring spins comprising an ensemble spin qubit (E-qubit) can act as an intrinsic error mitigator, increasing gate fidelity even at high temperatures. As an example, the fidelity…

介观与纳米尺度物理 · 物理学 2025-03-18 Aniruddha Chakraborty , Md. Fahim F. Chowdhury , Mohamad Niknam , Louis S. Bouchard , Jayasimha Atulasimha

We compute correlation functions for one-dimensional electron systems which spin and charge degrees of freedom are coupled through spin-orbit coupling. Charge density waves, spin density waves, singlet- triplet- superconducting fluctuations…

强关联电子 · 物理学 2016-08-16 Aníbal Iucci

We present a theoretical study of the spectrum of electrons confined in triple concentric rings. An unusual ordering and rich variety of angular momentum transitions are found that depend on the coupling between the rings and the…

介观与纳米尺度物理 · 物理学 2012-04-17 Bin Li , F. M. Peeters

This article reviews spin-dependent transport of carriers in homogenous three-dimensional and two-dimensional semiconductors. We begin with a discussion of optical orientation of electron spins, which allows both the creation and detection…

介观与纳米尺度物理 · 物理学 2007-05-23 R. Winkler

Theory and recent experiments concerning exchange-driven magnetic excitation (EDME) are reviewed. This phenomenon employs the exchange field produced by a narrowly distributed spin-polarized electron current to excite Larmor precession in a…

凝聚态物理 · 物理学 2007-05-23 J. C. Slonczewski

In this paper we outline a physically motivated framework for describing spin-selective recombination processes in chiral systems, from which we derive spin-selective reaction operators for recombination reactions of donor-bridge-acceptor…

化学物理 · 物理学 2023-03-09 Thomas P. Fay , David T. Limmer

A remarkably long-lived spin plasmon may exist in two-dimensional electron liquids with imbalanced spin up and spin down population. Predictions for this interesting mode by Agarwal et al. [Phys. Rev. B 90, 155409 (2014)] are based on the…

介观与纳米尺度物理 · 物理学 2016-03-09 Dominik Kreil , Raphael Hobbiger , Jürgen T. Drachta , Helga M. Böhm

Spin correlations in the paramagnetic phase of lanthanum cuprate have been studied using polarized neutron scattering, with two important results. First, the temperature dependence of the characteristic energy scale of the fluctuations and…

强关联电子 · 物理学 2009-11-11 A. M. Toader , J. P. Goff , M. Roger , N. Shannon , J. R. Stewart , M. Enderle

Electron dynamics in quantum dots manifests itself in spin-flip spectra through electric dipole spin resonance (EDSR). Near a neutrality point separating two different singlet charged states of a double quantum dot, charge dynamics inside a…

介观与纳米尺度物理 · 物理学 2013-05-29 Emmanuel I. Rashba

We consider a one-dimensional chain consisting of an interacting area coupled to non-interacting leads. Within the area, interaction is mediated by a local on-site repulsion. Using real time evolution within the Density Matrix…

强关联电子 · 物理学 2015-05-13 Tobias Ulbricht , Peter Schmitteckert

The problem of spin-dependent transport of electrons through a finite array of quantum dots attached to 1D quantum wire (spin gun) for various semiconductor materials is studied. The Breit-Fermi term for spin-spin interaction in the…

介观与纳米尺度物理 · 物理学 2007-05-23 S. A. Avdonin , L. A. Dmitrieva , Yu. A. Kuperin , V. V. Sartan

Spin is a fundamental property of any many-electron system. The ability of density functional theory to accurately predict the physical properties of a system, while varying its spin, is crucial for describing magnetic materials and…

化学物理 · 物理学 2024-11-05 Alon Hayman , Eli Kraisler , Tamar Stein

We theoretically study the role of electron-electron interactions in one-dimensional magnetized helical states coupled to an s-wave superconductor. We consider a partially mixed helical (superhelical) regime, where the magnetic field…

强关联电子 · 物理学 2025-09-01 Zeinab Bakhshipour , Mir Vahid Hosseini

We present a theoretical study of diluted magnetic semiconductors that treats the local sp-d exchange interaction J between the itinerant carriers and the Mn d electrons within a realistic band structure and goes beyond previous mean-field…

材料科学 · 物理学 2007-05-23 Byounghak Lee , Xavier Cartoixa , Nandini Trivedi , Richard M. Martin

Spin can have significant effects on the electromagnetic transients accompanying binary neutron star mergers. The measurement of spin can provide important information about binary formation channels. In the absence of a strong neutron star…

高能天体物理现象 · 物理学 2019-12-18 William E. East , Vasileios Paschalidis , Frans Pretorius , Antonios Tsokaros

We investigate spin-dependent electron transfer in the presence of a Duschinskii rotation. In particular, we propagate dynamics for a two-level model system for which spin-orbit coupling introduces an interstate coupling of the form…

量子物理 · 物理学 2023-01-11 Suraj S. Chandran , Yanze Wu , Joseph E. Subotnik

The scattering of conduction electrons off neutral donors depends sensitively on the relative orientation of their spin states. We present a theory of spin-dependent scattering in the two dimensional electron gas (2DEG) of field effect…

介观与纳米尺度物理 · 物理学 2009-07-25 Rogerio de Sousa , Cheuk Chi Lo , Jeffrey Bokor

Using a combination of heat pulse and nuclear magnetic resonance techniques we demonstrate that the phase boundary separating the interlayer phase coherent quantum Hall effect at $\nu_T = 1$ in bilayer electron gases from the weakly coupled…

介观与纳米尺度物理 · 物理学 2009-11-10 I. B. Spielman , L. A. Tracy , J. P. Eisenstein , L. N. Pfeiffer , K. W. West

Manipulation of the spin-states of a quantum dot by purely electrical means is a highly desirable property of fundamental importance for the development of spintronic devices such as spin-filters, spin-transistors and single-spin memory as…

介观与纳米尺度物理 · 物理学 2008-10-20 J. R. Hauptmann , J. Paaske , P. E. Lindelof

The transmission through a magnetic layer of correlated electrons sandwiched between non-interacting normal-metal leads is studied within model calculations. We consider the linear regime in the framework of the Meir-Wingreen formalism,…

介观与纳米尺度物理 · 物理学 2022-05-25 Andreas Weh , Wilhelm H. Appelt , Andreas Östlin , Liviu Chioncel , Ulrich Eckern