Optically induced transport properties of freely suspended semiconductor submicron channels
classification
❄️ cond-mat.mes-hall
cond-mat.other
keywords
channelsdevicesfreelyinducedopticallysubmicronsuspendedtransport
read the original abstract
We report on optically induced transport phenomena in freely suspended channels containing a two-dimensional electron gas (2DEG). The submicron devices are fabricated in AlGaAs/GaAs heterostructures by etching techniques. The photoresponse of the devices can be understood in terms of the combination of photogating and a photodoping effect. The hereby enhanced electronic conductance exhibits a time constant in the range of one to ten milliseconds.
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