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- W2276403804 abstract "Presented here is an experimental study on a novelelectron device utilizing ballistic electron transport. Thisdevice is a three-terminal structure comprised of lithographicallydefined Y-shaped two-dimensional electron gas (2DEG) in a compoundsemiconductor heterostructure. Ballistic electron transport causesa nonlinear input-output transfer curve, which can be exploitedfor signal rectification, frequency multiplication, and logic gatefunction. Device fabrication technique using electron beamlithography and a carbon-hard-mask was developed, in order toreliably fabricate ∼100-nm-wide 2DEG wires. Direct currentmeasurements while changing the device length and operatingtemperature revealed the role of ballistic transport in thenonlinear behavior and elucidated that the intervalley transfermechanism took over the nonlinear behavior under the high electricfield. Electrical response at terahertz frequencies was studied byultrafast time-domain analysis based on an electro-optic samplingand sub-picosecond pulse generation using a photoconductiveswitch. The terahertz measurement validated the superiorhigh-speed performance of this device as a consequence of smallinternal capacitance. This research opens up a way to realizevarious ballistic devices with room-temperature operation andterahertz-bandwidth performance." @default.
- W2276403804 created "2016-06-24" @default.
- W2276403804 creator A5001771112 @default.
- W2276403804 date "2010-01-01" @default.
- W2276403804 modified "2023-09-23" @default.
- W2276403804 title "Ballistic electron transport in nanoscale three-branch junctions" @default.
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