6533b828fe1ef96bd1287bc8

RESEARCH PRODUCT

Acoustic manipulation of electron-hole pairs in GaAs at room temperature

J. A. H. StotzM. M. De LimaPaulo V. SantosRudolf Hey

subject

Electron mobilityMaterials sciencePhysics and Astronomy (miscellaneous)Ambipolar diffusionbusiness.industryCarrier generation and recombinationAcoustic waveElectronEnginyeria acústicaCiència dels materialsOptical microcavitylaw.inventionGallium arsenidechemistry.chemical_compoundchemistrylawOptoelectronicsbusinessQuantum well

description

We demonstrate the optically detected long-range (>100 μm) ambipolar transport of photogenerated electrons and holes at room temperature by surface acoustic waves (SAWs) in (In,Ga)As-based quantum well structures coupled to an optical microcavity. We also show the control of the propagation direction of the carriers by a switch composed of orthogonal SAW beams, which can be used as a basic control gate for information processing based on ambipolar transport.

yearjournalcountryeditionlanguage
2004-04-05
10.1063/1.1695636http://hdl.handle.net/10550/31449