Abstract
Intense terahertz electric fields, available from the UCSB free-electron lasers, open new channels for resonant tunneling in semiconductor multi quantum well superlattices. Analogous to well established features of quasi-particle tunneling in superconducting-insulator-superconducting junctions, the low voltage conductance is shown to oscillate with the terahertz field strength and new steps appear in the current-voltage characteristic, that are indicative of resonant tunneling into photon side bands. The photon assisted channels are strong enough to overcome electric field domains but photon stimulated emission channels are remarkably silent.KeywordsCurrent Voltage CharacteristicBond WireResonant TunnelingHigh Frequency FieldHigh Frequency Electric FieldThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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