Quantum Thermal Conductance of a One-Dimensional Wire

Add to your list(s) Download to your calendar using vCal

• Dr. James Nicholls (Dept. of Physics, Royal Holloway, University of London)
• Monday 19 March 2007, 14:15-15:15
• Mott Seminar Room, Cavendish Laboratory, Department of Physics.

If you have a question about this talk, please contact K DAS GUPTA.

It has been theoretically shown that in 1D the quantization of the thermal conductance is universal for thermal carriers that obey boson, fermion, or anyon statistics. Careful low temperature measurements on suspended dielectric wires by the Caltech group have demonstrated this universality for phonon (bosons). In this talk I will describe how calibrated thermal conductance measurements can be performed on electrons, where heat flows less than 10 fW have been measured. Comparing the electrical to the thermal conductance, a breakdown of the Wiedemann-Franz rule is found below the last quantised plateau.

This talk is part of the Semiconductor Physics series.

This talk is included in these lists:

• All Cavendish Laboratory Seminars
• All Talks (aka the CURE list)
• Centre for Health Leadership and Enterprise
• Featured lists
• ME Seminar
• Mott Seminar Room, Cavendish Laboratory, Department of Physics
• Neurons, Fake News, DNA and your iPhone: The Mathematics of Information
• School of Physical Sciences
• Semiconductor Physics
• Thin Film Magnetic Talks

Note that ex-directory lists are not shown.