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Effective spin model for interband transport in a Wannier-Stark lattice system
Effective spin model interband transport Wannier-Stark lattice system
2010/10/29
We show that the interband dynamics in a tilted two-band Bose-Hubbard model can be reduced to an analytically accessible spin model in the case of resonant interband oscillations. This allows us to pr...
A research and development (R&D) project related to the extension of the Geant4 toolkit has been recently launched to address fundamental methods in radiation transport simulation. The project focuses...
Efficiency of LH+EC Current Drive in Tokamaks Featuring an Internal Transport Barrier
LH+EC Current Drive Tokamaks an Internal Transport Barrier
2010/10/14
In the present paper we study the effects due to the occurrence of radial transport of particles in a tokamak on the efficiency of current drive due to combined action of lower hybrid waves and electr...
The concept of ExB flow velocity shear suppression is utterly fundamental in modern fusion research. It is asserted that there are models enabling to understand the physics involved in LH transitions....
Magnetic Nanostructures for Lateral Spin-Transport Devices
Magnetic Nanostructures Lateral Spin-Transport Devices
2010/10/21
We review our investigations on nanostructured ferromagnets fabricated on semiconductor heterostructures. We show that ballistic electrons in the semiconductor are in particular sensitive to local str...
Electron Transport Mechanism in GaN/AlGaN HEMT Structures
GaN Momentum Relaxation LO Phonon Scattering
2010/4/13
The electron transport mechanism in GaN/AlGaN HEMT (High Electron Mobility Transistors) structures grown with MBE on sapphire substrate was investigated by using the temperature dependence of the Hall...
Micro-Crystallographic, Optical and Transport Studies of Cd0.7 Zn0.3 Se : Sb Thin Films
trivalent antimony Micro-Crystallographic Transport Studies
2010/4/13
Cd1-xZnxSe thin film structures doped with various concentrations of trivalent antimony were chemically deposited onto glass-substrates. These structures were then characterised through the XRD, SEM, ...