Thermoelectric power in between two plateaus in quantum Hall effect

Details Thermoelectric power in between two plateaus in quantum Hall effect Thermoelectric power in between two plateaus in quantum Hall effect

2003-05-16

arxiv.org/abs/cond-mat/0305379v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages TeX

Scientific paper

We have considered the response at two energies corresponding to two plateaus in the quantum Hall effect. Since the thermoelectric power involves the derivative of conductivity with respect to energy, we introduce the concept of a line width and hence an activation energy. We then use the Hall conductivity to define the thermoelectric power at the centre of two plateaus, which is found to vary monotonically as T^2 at low temperatures with fixed magnetic field. At elivated temperatures, the thermoelectric power varies as T(exp-\Delta/k_BT).

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