# Nonadiabatic Generation of a Pure Spin Current in a One-Dimensional Quantum Ring with Spin-Orbit Interaction

@article{Ni2010NonadiabaticGO, title={Nonadiabatic Generation of a Pure Spin Current in a One-Dimensional Quantum Ring with Spin-Orbit Interaction}, author={Marian Niţă and Dan C. Marinescu and Andrei Manolescu and Vidar Gudmundsson}, journal={Physical Review B}, year={2010}, volume={83}, pages={155427} }

We demonstrate the theoretical possibility of obtaining a pure spin current in a 1D ring with spin-orbit interaction by irradiation with a non-adiabatic, two-component terahertz laser pulse, whose spatial asymmetry is reflected by an internal dephasing angle $\phi$. The stationary solutions of the equation of motion for the density operator are obtained for a spin-orbit coupling linear in the electron momentum (Rashba) and used to calculate the time-dependent charge and spin currents. We find…

## 15 Citations

### Nonadiabatic generation of spin currents in a quantum ring with Rashba and Dresselhaus spin-orbit interactions

- Physics
- 2012

When subjected to a linearly polarized terahertz pulse, a mesoscopic ring endowed with spin-orbit interaction (SOI) of the Rashba-Dresselhaus type exhibits non-uniform azimuthal charge and spin…

### Spin-polarized currents in a two-terminal quantum ring with spin–orbit interaction

- Physics
- 2016

Photoinduced spin current is calculated in a system consisting of a 1D quantum ring with conductors connected to it. It is shown that in the presence of Rashba’s spin–orbit interaction, a current is…

### Spin current in a two-terminal quantum ring

- PhysicsJournal of Surface Investigation: X-ray, Synchrotron and Neutron Techniques
- 2017

The photo-induced direct current in a system consisting of a one-dimensional Rashba ring with conductors connected to it is calculated. The current is produced under the action of circularly…

### Effects of geometry and linearly polarized cavity photons on charge and spin currents in a quantum ring with spin-orbit interactions

- Physics
- 2014

We calculate the persistent charge and spin polarization current inside a finite-width quantum ring of realistic geometry as a function of the strength of the Rashba or Dresselhaus spin-orbit…

### Transient magnetic hybridization of spin and orbital degrees of freedom in two-dimensional quantum rings

- PhysicsPhysica E: Low-dimensional Systems and Nanostructures
- 2018

### Oscillating spin–orbit interaction as a source of spin-polarized wavepackets in two-terminal nanoscale devices

- PhysicsJournal of physics. Condensed matter : an Institute of Physics journal
- 2014

This work has shown that spin polarization has space and time dependence even in regions without SOI, and obtained Floquet quasi-energies that appear in the energy spectrum of both the transmitted and the reflected waves.

### Quantum rings in magnetic fields and spin current generation

- PhysicsJournal of physics. Condensed matter : an Institute of Physics journal
- 2014

We propose three different mechanisms for pumping spin-polarized currents in a ballistic circuit using a time-dependent magnetic field acting on an asymmetrically connected quantum ring at half…

### Excitation spectra of a quantum ring embedded in a photon cavity

- Physics
- 2014

We explore the response of a quantum ring system coupled to a photon cavity with a single mode when excited by a classical dipole field. We find that the energy oscillates between the electronic and…

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