Granger, G. and Eisenstein, J. P. and Reno, J. L. (2009) Observation of chiral heat transport in the quantum Hall regime. Physical Review Letters, 102 (8). 086803. ISSN 0031-9007 http://resolver.caltech.edu/CaltechAUTHORS:20090528-075110597
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Heat transport in the quantum Hall regime is investigated using micron-scale heaters and thermometers positioned along the edge of a millimeter-scale two dimensional electron system (2DES). The heaters rely on localized current injection into the 2DES, while the thermometers are based on the thermoelectric effect. In the v=1 integer quantized Hall state, a thermoelectric signal appears at an edge thermometer only when it is “downstream,” in the sense of electronic edge transport, from the heater. When the distance between the heater and the thermometer is increased, the thermoelectric signal is reduced, showing that the electrons cool as they propagate along the edge.
|Additional Information:||© 2009 The American Physical Society. Received 17 October 2008; published 23 February 2009. We thank G. Fiete, M. P. A. Fisher, S.M. Girvin, C. L. Kane, A. Kitaev, A. H. MacDonald, G. Refael, and A. Stern for discussions, and B. Chickering, V. Cvicek, and D. Nichols for technical help. This work was supported via Microsoft Project Q and DOE Grant No. DE-FG03- 99ER45766.|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||13 Aug 2009 19:55|
|Last Modified:||26 Dec 2012 11:01|
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