Effect of hyperfine-induced spin mixing on the defect-enabled spin blockade and spin filtering in GaNAs

Effect of hyperfine-induced spin mixing on the defect-enabled spin blockade and spin filtering in GaNAs

Room temperature spin filtering effect in GaNAs: Role of hydrogen

Spin correlations in spin blockade

We investigate spin currents and spin-current correlations for double quantum dots in the spin blockade regime. By analysing the time evolution of the density matrix, we obtain the spin resolved currents and derive from a generating function an expression for the fluctuations and correlations. Both the charge current and the spin current turn out to be generally super-Poissonian. Moreover, we s...

Electron spin filtering by thin GaNAs/GaAs multiquantum wells

Thermal effect and role of entanglement and coherence on excitation transfer in a spin chain

We analyze the role of bath temperature, coherence and entanglement on excitation transfer in a spin chain induced by the environment. In Markovian regime, we show that coherence and entanglement are very sensitive to bath temperature and vanish in time in contrary to the case of having zero-temperature bath. That is while, finding the last qubit of the chain in excited state increases by incre...