Ultrafast creation and annihilation of space-charge domains in a semiconductor superlattice observed by use of terahertz fields

DOI zum Zitieren dieses Dokuments:: 10.5283/epub.1681

Klappenberger, Florian ; Alekseev, K. ; Renk, Karl Friedrich ; Scheuerer, R. ; Schomburg, Ekkehard ; Allen, S. ; Ramian, G. ; Scott, J. ; Kovsh, A. ; Ustinov, V. ; Zhukov, A.

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Veröffentlichungsdatum dieses Volltextes: 05 Aug 2009 13:31

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We report an experimental study indicating ultrafast creation and annihilation of space-charge domains in a semiconductor superlattice under the action of a THz field. Our experiment was performed for an InGaAs/InAlAs superlattice with the conduction electrons undergoing miniband transport. We applied to a superlattice a dc bias that was slightly smaller than a critical bias necessary for the ...