Photovoltaic effect generated by spin-orbit interactions
arXiv:1911.01168 · doi:10.1103/PhysRevB.101.121303
Abstract
An AC electric field applied to a junction comprising two spin-orbit coupled weak links connecting a quantum dot to two electronic terminals is proposed to induce a DC current and to generate a voltage drop over the junction if it is a part of an open circuit. This photovoltaic effect requires a junction in which mirror reflection-symmetry is broken. Its origin lies in the different fashion inelastic processes modify the reflection of electrons from the junction back into the two terminals, which leads to uncompensated DC transport. The effect can be detected by measuring the voltage drop that is built up due to that DC current. This voltage is an even function of the frequency of the AC electric field and is {\em not} related to quantum pumping.
arXiv comment5 pages, 2 figures published version Phys Rev B 101, 121303(R) (2020)
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- Thermoelectric performance of nano junctions subjected to microwave driven spin-orbit coupling
- Photovoltaic transistor of atoms due to spin-orbit coupling in three optical traps