Non-Equilibrium Magnetization in a Ballistic Quantum Dot

Details Non-Equilibrium Magnetization in a Ballistic Quantum Dot Non-Equilibrium Magnetization in a Ballistic Quantum Dot

1994-04-27

arxiv.org/abs/cond-mat/9404088v1

Physics

Condensed Matter

11 pages LaTeX v3.14 with RevTeX v3.0, 3 post script figures available on request, APR 93-X21

Scientific paper

10.1103/PhysRevLett.73.162

We show that Aharonov-Bohm (AB) oscillations in the magnetic moment of an integrable ballistic quantum dot can be destroyed by a time dependent magnetic flux. The effect is due to a nonequilibrium population of perfectly coherent electronic states. For real ballistic systems the equilibrization process, which involves a special type of inelastic electron backscattering, can be so ineffective, that AB oscillations are suppressed when the flux varies with frequency $\omega\sim$ 10$^7$-10$^8$ s$^{-1}$. The effect can be used to measure relaxation times for inelastic backscattering.

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