Spin-orbit coupling, antilocalization, and parallel magnetic fields in quantum dots.

@article{Zumbhl2002SpinorbitCA,
  title={Spin-orbit coupling, antilocalization, and parallel magnetic fields in quantum dots.},
  author={Dominik M. Zumb{\"u}hl and J. B. Miller and Charles M. Marcus and Kenneth Lee Campman and Arthur C. Gossard},
  journal={Physical review letters},
  year={2002},
  volume={89 27},
  pages={
          276803
        }
}
We investigate antilocalization due to spin-orbit coupling in ballistic GaAs quantum dots. Antilocalization that is prominent in large dots is suppressed in small dots, as anticipated theoretically. Parallel magnetic fields suppress both antilocalization and also, at larger fields, weak localization, consistent with random matrix theory results once orbital coupling of the parallel field is included. In situ control of spin-orbit coupling in dots is demonstrated as a gate-controlled crossover… 

Figures, Tables, and Topics from this paper

Crossover from weak localization to antilocalization in quantum dots with spin–orbit coupling
Abstract We investigate magneto-transport properties of disordered quantum dots with spin–orbit (SO) coupling in parallel magnetic fields by the use of the transfer matrix method. We present
Gate-controlled spin-orbit quantum interference effects in lateral transport.
In situ control of spin-orbit coupling in coherent transport using a clean GaAs/AlGaAs two-dimensional electron gas is realized, leading to a gate-tunable crossover from weak localization to
Spin relaxation and anticrossing in quantum dots : Rashba versus Dresselhaus spin-orbit coupling
The spin-orbit splitting of the electron levels in a two-dimensional quantum dot in a perpendicular magnetic field is studied. It is shown that at the point of an accidental degeneracy of the two
Spin Polarized Current Generation from Quantum Dots without Magnetic Fields
An unpolarized charge current passing through a chaotic quantum dot with spin-orbit coupling can produce a spin-polarized exit current without magnetic fields or ferromagnets. We use random matrix
Fluctuations of spin transport through chaotic quantum dots with spin-orbit coupling
As devices to control spin currents using the spin-orbit interaction are proposed and implemented, it is important to understand the fluctuations that spin-orbit coupling can impose on transmission
Controlling hole spins in quantum dots and wells
We review recent theoretical results for hole spins influenced by spin-orbit coupling and Coulomb interaction in two-dimensional quantum wells as well as the decoherence of single hole spins in
Theory of Edge States in Systems with Rashba Spin-Orbit Coupling
We study the edge states in a two dimensional electron gas with a transverse magnetic field and Rashba spin-orbit coupling. In the bulk, the interplay between the external field perpendicular to the
Coherence and Spin in GaAs Quantum Dots
This thesis describes a number of experiments performed in quantum dots as well as 2D systems fabricated in GaAs/AlGaAs 2D electron gases. The focus of the studies is set on spin, coherence and
Weak localization and conductance fluctuations in a quantum dot with parallel magnetic field and spin-orbit scattering
In the presence of both spin-orbit scattering and a magnetic field the conductance of a chaotic GaAs quantum dot displays quite a rich behavior. Using a Hamiltonian derived by Aleiner and Fal’ko
Stroboscopic model of transport through a quantum dot with spin-orbit scattering
We present an open version of the symplectic kicked rotator as a stroboscopic model of electrical conduction through an open ballistic quantum dot with spin-orbit scattering. We demonstrate
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 29 REFERENCES
Spin-orbit coupling effects on quantum transport in lateral semiconductor dots.
TLDR
The effects of interplay between spin-orbit coupling and Zeeman splitting on weak localization and universal conductance fluctuations in lateral semiconductor quantum dots are analyzed and crossovers between them achievable by sweeping magnetic field and changing the dot parameters are described.
APPL
Statistical packages have been used for decades to analyze large datasets or to perform mathematically intractable statistical methods. These packages are not capable of working with random variables
Phys. Rev. B Phys. Rev. Lett
  • Phys. Rev. B Phys. Rev. Lett
  • 2002
Physica (Amsterdam)
  • Physica (Amsterdam)
  • 2002
Phys
  • Rev. B 61, 12639 (2000); A. V. Khaetskii and Y. V. Nazarov, Phys. Rev. B 64, 125316
  • 2001
Phys. Rev. Lett
  • Phys. Rev. Lett
  • 2001
Phys. Rev. Lett
  • Phys. Rev. Lett
  • 2001
Phys. Rev. Lett
  • Phys. Rev. Lett
  • 2001
Phys. Rev. B
  • Phys. Rev. B
  • 2000
Phys. Rev. Lett. Appl. Phys. Lett. Phys. Rev. Lett
  • Phys. Rev. Lett. Appl. Phys. Lett. Phys. Rev. Lett
  • 1999
...
1
2
3
...