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SUMMARY:Electron confinement in graphene quantum dots - Prof Peter Maksym 
 (Department of Physics and Astronomy\, University of Leicester
DTSTART:20100517T131500Z
DTEND:20100517T141500Z
UID:TALK24774@talks.cam.ac.uk
CONTACT:afw24
DESCRIPTION:Graphene is different from any other semiconductor because its
  charge carriers are massless.\nThey move at a constant speed c and are un
 able to stop. But in contrast to natural massless particles\,\nthey can ex
 perience forces. This leads to some very unusual motion which is investiga
 ted both\nwith quantum mechanics and classical mechanics. For example\, th
 e well-known Klein paradox\nis that massless charge carriers approaching a
  one-dimensional potential barrier experience 100%\ntransmission. This mea
 ns one-dimensional confinement is impossible but in contrast\, graphene\nc
 harge carriers moving in two dimensions can be confined by a combination o
 f electric and\nmagnetic fields. The talk will be focused on quantum state
 s and particle trajectories in this\nsituation. After an introduction to t
 he physics of graphene\, the physics of single electron\nconfinement in gr
 aphene dots will be detailed and the prospects for experimental studies of
  this\nsystem will be discussed. Possible links to other areas of physics 
 such as overcritical nuclei and\nHawking radiation will be mentioned brief
 ly.
LOCATION:Mott Seminar Room
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