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 for details or contact A/Prof. Alex Hamilton, Dr. Adam Micolich .




postgraduate research