Nonmagnetic semiconductor spin transistor

Spin-orbit-induced longitudinal spin-polarized currents in nonmagnetic solids

For certain nonmagnetic solids with low symmetry the occurrence of spin-polarized longitudinal currents is predicted. These arise due to an interplay of spin-orbit interaction and the particular crystal symmetry. This result is derived using a group-theoretical scheme that allows investigating the symmetry properties of any linear response tensor relevant to the field of spintronics. For the sp...

Spin dependent transport of "nonmagnetic metal/zigzag nanotube encapsulating magnetic atoms/nonmagnetic metal" junctions

Towards a novel magnetoresistance (MR) device with a carbon nanotube, we propose “nonmagnetic metal/zigzag nanotube encapsulating magnetic atoms/nonmagnetic metal” junctions. We theoretically investigate how spinpolarized edges of the nanotube and the encapsulated magnetic atoms influence on transport. When the on-site Coulomb energy divided by the magnitude of transfer integral, U/|t|, is larg...

Modeling of spin metal-oxide-semiconductor field-effect transistor: A nonequilibrium Green’s function approach with spin relaxation

A spin metal-oxide-semiconductor field-effect transistor spin MOSFET , which combines a Schottky-barrier MOSFET with ferromagnetic source and drain contacts, is a promising device for spintronic logic. Previous simulation studies predict that this device should display a very high magnetoresistance MR ratio between the cases of parallel and antiparallel magnetizations for the case of half-metal...

Modeling of spin metal-oxide-semiconductor field-effect transistor: A nonequilibrium Greenâ•Žs function approach with spin relaxation

Metal-Oxide-Semiconductor Field Effect Transistor (MOSFET)

The IGFET or MOSFET is a voltage controlled field effect transistor that differs from a JFET in that it has a “Metal Oxide” Gate electrode which is electrically insulated from the main semiconductor n-channel or p-channel by a very thin layer of insulating material usually silicon dioxide, commonly known as glass. This ultra thin insulated metal gate electrode can be thought of as one plate of ...