POSTGRADUATE RESEARCH

Condensed Matter Physics

Quantum Electronic Devices (colour brochure)

The Quantum Electronic Devices Group studies the fundamental electronic and magnetic properties of advanced nanostructure devices. Research students use state-of-the-art semiconductor clean-room processing equipment to fabricate these devices, and ultra-low temperatures and sensitive electronics to study them. Students regularly make international trips to conferences and to visit collaborators - the group has active links with leading laboratories in the USA, UK (Cambridge), Japan (NTT), Denmark (Niels-Bohr Institute) and Italy.

Semiconductor Nanostructures: We are world leaders in fabricating p-type quantum wires, which show outstanding electrical properties and possibilities for spintronics applications. High-resolution electron beam lithography is used to fabricate nanoscale devices from custom grown ultra-low disorder GaAs-AlGaAs heterostructures. The project will also develop devices with both electrons and holes, where the attractive Coulomb interaction may allow the formation of a bosonic superfluid.

High speed quantum devices: Most quantum devices are studied at low speeds (<1kHz). Higher speeds(~1GHz) provide new tools for probing many body quantum states (c.f. the 1998 Nobel prize in Physics). This project will study high-frequency properties of quantum wires, and the change in ‘noise’ when an excitonic superfluid forms.

Organic electronics and new nanofabrication techniques: Projects are available to use soft-lithography to develop new devices based on organic molecules and carbon nanotubes. This has the potential to allow the electrical properties to be tailored with suitable chemical preparation.

See www.phys.unsw.edu.au/QED for details or contact A/Prof. Alex Hamilton, Dr. Adam Micolich .

 

 


 


postgraduate research