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VERSION:2.0
CALSCALE:GREGORIAN
PRODID:UW-Madison-Physics-Events
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SEQUENCE:0
UID:UW-Physics-Event-1609
DTSTART:20091112T160000Z
DURATION:PT1H0M0S
DTSTAMP:20260414T082136Z
LAST-MODIFIED:20091027T160757Z
LOCATION:5310 Chamberlin
SUMMARY:Oxide Nanoelectronics\, R. G. Herb Condensed Matter Seminar\, 
 Jeremy Levy\, University of Pittsburgh
DESCRIPTION:Electronic confinement at nanoscale dimensions remains a c
 entral means of science and technology.  In this talk\, I will describ
 e a new method for producing extreme nanoscale electronic confinement 
 at the interface between two separately insulating oxides\, LaAlO3 and
  SrTiO3. Using an approach reminiscent of the popular toy "Etch-a-Sket
 ch"\, we scan an electrically biased probe on the surface of this hete
 rostructure to create nanoscale conducting islands\, nanowires\, tunne
 l junctions and field-effect transistors at the interface.  The smalle
 st feature size approaches one nanometer.  These structures are create
 d in ambient conditions at room temperature\, and can be erased and re
 written repeatedly.  At low temperatures\, a variety of quantum phases
  have been observed\, including integer and fractional quantum Hall st
 ates and superconductivity.  This new\, on-demand nanoelectronics plat
 form has the potential for widespread scientific and technological exp
 loitation.<br>
\n <br>
\nThis work is supported by the National Scienc
 e Foundation\, Defense Advanced Research Projects Agency\, Army Resear
 ch Office and Air Force Office of Scientific Research.
URL:https://www.physics.wisc.edu/events/?id=1609
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