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Electron energy relaxation in the presence of magnetic impurities | | A. Kaminski
; L.I. Glazman
; | | Date: |
25 Oct 2000 | | Journal: | Phys. Rev. Lett. 86, 2400 (2001) | | Subject: | Mesoscopic Systems and Quantum Hall Effect; Strongly Correlated Electrons | cond-mat.mes-hall cond-mat.str-el | | Abstract: | We study inelastic electron-electron scattering mediated by the exchange interaction of electrons with magnetic impurities, and find the kernel of the corresponding two-particle collision integral. In a wide region of parameters, the kernel K is proportional to the inverse square of the transferred energy, $Kpropto J^4/E^2$. The exchange constant J is renormalized due to the Kondo effect, yielding an additional weak dependence of K on the energies of the colliding electrons. At small energy transfers, the $1/E^2$ divergence is cut off; the cut-off energy is determined by the dynamics of the impurity spins. The obtained results may provide a quantitative explanation of the experiments of Pothier et al. [Phys. Rev. Lett. 79, 3490 (1997)] on anomalously strong energy relaxation in short metallic wires. | | Source: | arXiv, cond-mat/0010379 | | Services: | Forum | Review | PDF | Favorites | |
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