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10 papers · 2 filters
Generation of spin current and polarization under dynamic gate control of spin-orbit interaction in low-dimensional semiconductor systems
C. S. Tang, A. G. Mal'shukov, K. A. Chao
Based on the Keldysh formalism, the Boltzmann kinetic equation and the drift diffusion equation have been derived for studying spin polarization flow and spin accumulation under ef…
Non-collinear magnetoconductance of a quantum dot
Jonas N. Pedersen, Jesper Q. Thomassen, Karsten Flensberg
We study theoretically the linear conductance of a quantum dot connected to ferromagnetic leads. The dot level is split due to a non-collinear magnetic field or intrinsic magnetiza…
Electron-hole duality and vortex rings in quantum dots
M. Manninen, S. M. Reimann, M. Koskinen +2
In a quantum-mechanical system, particle-hole duality implies that instead of studying particles, we can get equivalent information by studying the missing particles, the so-called…
Spin-Hall conductivity of a disordered 2D electron gas with Dresselhaus spin-orbit interaction
A. G. Mal'shukov, K. A. Chao
The spin-Hall conductivity of a disordered 2D electron gas has been calculated for an arbitrary spin-orbit interaction. We have found that in the diffusive regime of electron trans…
Stability of vortex structures in quantum dots
H. Saarikoski, S. M. Reimann, E. Rasanen +2
We study the stability and structure of vortices emerging in two-dimensional quantum dots in high magnetic fields. Our results obtained with exact diagonalization and density-funct…
Spin relaxation dynamics of quasiclassical electrons in ballistic quantum dots with strong spin-orbit coupling
Cheng-Hung Chang, A. G. Mal'shukov, K. A. Chao
We performed path integral simulations of spin evolution controlled by the Rashba spin-orbit interaction in the semiclassical regime for chaotic and regular quantum dots. The spin…