Chiral control of electron transmission through molecules
Date
2008Source
Physical Review LettersVolume
101Issue
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Electron transmission through chiral molecules induced by circularly polarized light can be very different for mirror-image structures, a peculiar fact given that the electronic energy spectra of the systems are identical. We propose that this asymmetry-as large as 10% for resonant transport-arises from different dynamical responses of the mirrored structures to coherent excitation. This behavior is described in the context of a general novel phenomenon of current transfer (transfer of charge with its momentum information) and accounts for the observed asymmetry and its dependence on structure. © 2008 The American Physical Society.