Thermalization of nonequilibrium electrons in quantum wires |
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Authors: | Micklitz Tobias Levchenko Alex |
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Affiliation: | Dahlem Center for Complex Quantum Systems and Institut für Theoretische Physik, Freie Universit?t Berlin, 14195 Berlin, Germany. |
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Abstract: | We study the problem of energy relaxation in a one-dimensional electron system. The leading thermalization mechanism is due to three-particle collisions. We show that for the case of spinless electrons in a single channel quantum wire the corresponding collision integral can be transformed into an exactly solvable problem. The latter is known as the Schr?dinger equation for a quantum particle moving in a P?schl-Teller potential. The spectrum for the resulting eigenvalue problem allows for bound-state solutions, which can be identified with the zero modes of the collision integral, and a continuum of propagating modes, which are separated by a gap from the bound states. The inverse gap gives the time scale at which counterpropagating electrons thermalize. |
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