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SUMMARY:A brief introduction to AlAs quantum wells - Dr. Christine Nicoll 
 (Semiconductor Physics Group\, Cavendish Laboratory)
DTSTART:20060522T131500Z
DTEND:20060522T141500Z
UID:TALK5042@talks.cam.ac.uk
CONTACT:K DAS GUPTA
DESCRIPTION:I aim to present a basic introduction to AlAs/AlGaAs quantum w
 ells\, in which\nelectrons can be confined to the indirect-band-gap materi
 al AlAs. In this\nway\, without departing from the familiar and lattice-ma
 tched system of\nGaAs/AlGaAs/AlAs\, we can produce a 2DEG in which the ele
 ctrons have\ndifferent parameters from those in the conventional GaAs/AlGa
 As 2DEG. Within\nthe group\, we have developed the capability to grow AlAs
  quantum wells with\nelectron mobilities that approach the best reported t
 o date. I will show\nsome of the results of electrical characterization of
  our wells\, and address\nsome of the technological issues related to thei
 r growth\, fabrication\, and\nmeasurement.\n
LOCATION:Mott Seminar Room\, Cavendish Laboratory\, Department of Physics
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