Starting in 1996, Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to the Wayback Machine after an embargo period.
The Wayback Machine - https://web.archive.org/web/20031008065728/http://www.sp.phy.cam.ac.uk:80/
University of Cambridge, Cavendish Laboratory
Semiconductor Physics Group
The Semiconductor Physics group investigates fundamental electronic
phenomena using advanced, often unique, semiconductor structures.
High-quality GaAs-AlGaAs wafers can be grown in our Molecular Beam
Epitaxy (MBE) machines, and the surface, or buried layers, patterned
using optical, electron beam, or ion beam lithography. The structures
made may consist, for example, of gates above a two-dimensional
electron gas (2DEG). When a negative voltage is applied to the gates,
the 2DEG is depleted, leaving electrons only in regions not covered by
the gates. Thus electrons may be confined to narrow channels or boxes
of whatever shape is required. This allows us to investigate one or
zero-dimensional effects. The devices can be made small enough that
electrons suffer no collisions there, provided low enough temperatures
(4K or even 100mK) are used.
The SP Group is actively developing new processing and patterning
techniques, and looking at the fascinating physics that these
techniques make accessible.
Semiconductor Physics Group
