Multiphoton-assisted tunneling, dynamic localization and absolute negative conductance
| Autor: | Uddalak Bhattacharya, B. J. Keay, Mark J. W. Rodwell, Arthur C. Gossard, S. J. Allen, K. D. Maranowski |
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| Rok vydání: | 1996 |
| Předmět: |
Photon
Condensed matter physics Terahertz radiation Chemistry Conductance Field strength Surfaces and Interfaces Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Surfaces Coatings and Films Electric field Materials Chemistry Stimulated emission Atomic physics Quantum tunnelling Quantum well |
| Zdroj: | Surface Science. :176-180 |
| ISSN: | 0039-6028 |
| DOI: | 10.1016/0039-6028(96)00370-6 |
| Popis: | We report the observation of Absolute Negative Conductance (ANC), multiphoton stimulated emission and dynamical localization in sequential resonant tunneling semiconductor superlattices driven by intense terahertz electric fields. With increasing terahertz field strength the conductance near zero dc bias decreases towards zero and then becomes negative. This is accompanied by new steps and plateaus that are attributed to multiphoton-assisted resonant tunneling between ground states of neighboring quantum wells accompanied by the stimulated emission of a photon. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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