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RESEARCH PRODUCT
Carrier Transport in GaAs Nanowires Using Surface Acoustic Waves
Alberto Hernández-mínguezCarsten PfüllerHenning RiechertOliver BrandtM. M. De LimaSteffen BreuerM. MöllerAndrés CantareroPaulo V. SantosAlberto García-cristóbalLutz Geelhaarsubject
CrystalMaterials scienceField (physics)business.industrySurface acoustic waveNanowireOptoelectronicsAcoustic waveElectronbusinessPiezoelectricityElectrical contactsdescription
ABSTRACTThe oscillating piezoelectric field of a surface acoustic wave (SAW) is employed to transport photoexcited electrons and holes in GaAs nanowires (NWs) transferred to a SAW beam line on a LiNbO3 crystal. We show that carriers generated in the NW by a focused light spot can be acoustically transported to a second location, where they recombine emitting short light pulses. The results presented here demonstrate the high-frequency manipulation of carriers in NWs without the use of electrical contacts, which opens new perspectives for applications in opto-electronic devices operating at GHz frequencies.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-01-01 | MRS Proceedings |