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SUMMARY:Quantum Thermal Conductance of a One-Dimensional Wire - Dr. James 
 Nicholls (Dept. of Physics\, Royal Holloway\, University of London)
DTSTART:20070319T141500Z
DTEND:20070319T151500Z
UID:TALK6888@talks.cam.ac.uk
CONTACT:K DAS GUPTA
DESCRIPTION:It has been theoretically shown that in 1D the quantization of
  the\nthermal\nconductance is universal for thermal carriers that obey\nbo
 son\, fermion\, or anyon statistics. Careful low\ntemperature measurements
  on suspended dielectric wires by the Caltech\ngroup\nhave demonstrated th
 is universality for phonon (bosons).\nIn this talk I will describe how cal
 ibrated thermal conductance\nmeasurements can be performed on electrons\,\
 nwhere heat flows less than 10 fW have been measured.\nComparing the elect
 rical to the thermal conductance\, a breakdown of the\nWiedemann-Franz rul
 e\nis found below the last quantised plateau.\n
LOCATION:Mott Seminar Room\, Cavendish Laboratory\, Department of Physics
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