Interaction-Driven Spin Precession in Quantum-Dot Spin Valves

Thermoelectric spin accumulation and long-time spin precession in a noncollinear quantum dot spin valve

We explore thermoelectric spin transport and spin dependent phenomena in a noncollinear quantum dot spin valve setup. Using this setup, we demonstrate the possibility of a thermoelectric excitation of single spin dynamics inside the quantum dot. Many-body exchange fields generated on the single spins in this setup manifest as effective magnetic fields acting on the net spin accumulation in the ...

Quantum-Dot Spin Qubit and Hyperfine Interaction

We review our investigation of the spin dynamics for two electrons confined to a double quantum dot under the influence of the hyperfine interaction between the electron spins and the surrounding nuclei. Further we propose a scheme to narrow the distribution of difference in polarization between the two dots in order to suppress hyperfine induced decoherence.

Giant enhancement of spin accumulation and long-distance spin precession in metallic lateral spin valves.

The non-local spin injection in lateral spin valves is strongly expected to be an effective method to generate a pure spin current for potential spintronic application. However, the spin-valve voltage, which determines the magnitude of the spin current flowing into an additional ferromagnetic wire, is typically of the order of 1 μV. Here we show that lateral spin valves with low-resistivity NiF...

Spin Precession and Quantum Vacuum

The effect of quantum vacuum on spin precession is investigated. The radiation reaction is obtained and the time of spin flip (up state to down state) or spontaneous decay, is calculated.

Spin-Based Quantum Dot Quantum Computing