Photovoltaic effect in bent quantum wires

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We propose a scheme for the generation of photocurrent in bent quantum wires. We calculate the current using a generalized Landauer-Buttiker approach that takes into account the electromagnetic radiation. For circularly polarized light, we find that the curvature in the bent wire induces an asymmetry in the scattering coefficients for left and right moving electrons. This asymmetry results in a current at zero bias voltage. The effect is due to the geometry of the wire which transforms the photon angular momentum into translational motion for the electrons.

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Mesoscale and Nanoscale Physics, Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/97189

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0507698
 http://arxiv.org/abs/cond-mat/0507698
 Phys. Rev. B 72, 195340 (2005)
 doi:10.1103/PhysRevB.72.195340

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arXiv