Thermohydrodynamics in Quantum Hall Systems(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
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概要
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A theory of thermohydrodynamics in two-dimensional electron systems in quantizing magnetic fields is developed including a nonlinear transport regime. Spatio-temporal variations of the electron temperature and the chemical potential in the local equilibrium are described by the equations of conservation with the number and thermal-energy flux densities. A model of these flux densities due to hopping and drift processes is introduced for a random potential varying slowly compared to both the magnetic length and the phase coherence length. The flux measured in the standard transport experiment is derived and is used to define a transport component of the flux density. The equations of conservation can be written in terms of the transport component only. As an illustration, the theory is applied to the Ettingshausen effect, in which a one-dimensional spatial variation of the electron temperature is produced perpendicular to the current.
- 社団法人日本物理学会の論文
- 2005-03-15
著者
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Suzuura Hidekatsu
Department Of Physics Tokyo Institute Of Technology
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AKERA Hiroshi
Department of Physics,Faculty of Science,University of Tokyo
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