Related Experiment Video
Updated: Jun 25, 2026

Advanced Experimental Methods for Low-temperature Magnetotransport Measurement of Novel Materials
Published on: January 21, 2016
Observation of chiral heat transport in the quantum Hall regime
G Granger1, J P Eisenstein, J L Reno
1Condensed Matter Physics, California Institute of Technology, Pasadena, California 91125, USA.
Abstract:
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 nu=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.
Related Concept Videos
The Hall Effect
Quantifying Heat
Mechanism of heat transfer
Mechanisms of Heat Transfer II
Le Chatelier's Principle: Changing Temperature
To understand this phenomenon, consider the elementary reaction:
Mechanisms of Heat Transfer I

