Spin transport in graphene nanostructures

Spin Transport in Nanostructures

Spin Transport and Spin Precession in Graphene

Spin degree of freedom of electrons is one of the alternative state variables under consideration for processing information, beyond the charge based CMOS technology. The potential of spintronics based research lies in the possibilities for a new generation of computers that can be non-volatile, faster, smaller, and capable of simultaneous data storage and processing all with reduced energy con...

Spin Dependent Transport in Magnetic Nanostructures

Recent progress in physics on spin dependent transport in magnetic nanostructures is reviewed. Special attention is paid on the spin accumulation and spin current caused by spin injection into non-magnetic metals and semiconductors and superconductors. A variety of phenomena induced in nano-superconductor/ferromagnet devices are proposed, examining the spin-charge separation in superconductors.

Quantum transport and spin effects in lateral semiconductor nanostructures and graphene

This thesis studies electron spin phenomena in lateral semi-conductor quantum dots/anti-dots and electron conductance in graphene nanoribbons by numerical modelling. In paper I we have investigated spin-dependent transport through open quantum dots, i.e., dots strongly coupled to their leads, within the Hubbard model. Results in this model were found consistent with experimental data and sugges...

Correlated Spin Transport in Nanostructures : Entanglement Creation and Spin Filtering

The ability to have nonlocal and pairwise entangled qubits is important for many quantum computing and quantum communication tasks. I review our proposals towards the realization of a solid state electron spin entangler, a device that creates a charge current carried by spin-entangled electrons which are nonlocal (EPR-pair) in space. An s-wave superconductor (SC) serves as the source of spin-en...