Optical control of topological quantum transport in semiconductors.
نویسندگان
چکیده
Intense coherent laser radiation red-detuned from absorption edge can reactively activate sizable Hall-type charge and spin transport in n-doped paramagnetic semiconductors as a consequence of k-space Berry curvature transferred from the valence band to the photon-dressed conduction band. In the presence of disorder, the optically induced Hall conductance can change sign with laser intensity.
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عنوان ژورنال:
- Physical review letters
دوره 99 4 شماره
صفحات -
تاریخ انتشار 2007