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- W1495287300 abstract "Quantum wires with strong lateral confinement fabricated by high resolution electron beam lithography and wet chemical etching show conductance quantization up to a length comparable to the mean free path of the electrons associated with respective 2DEGs. By the temperature dependence of the quantized conductance an energy-spacing, /spl Delta/E/sub 1D/=12.5/spl plusmn/0.5 meV, between the two lowest lying 1D subbands for 135 nm wide wires was found-about 5 times larger than in commonly used split-gate devices. The breakdown of conductance quantization with increasing wire length is studied for quantum wires fabricated from wafers with different mobilities between 0.05/spl times/10/sup 6/ and 2/spl times/10/sup 6/ cm/sup 2/Ns. Our results support the suggestion by Koester et al. (1996), that backscattering is suppressed in strongly confined quantum wires, where the 1D subband energy spacing is much larger than the random potential fluctuations in the sample." @default.
- W1495287300 created "2016-06-24" @default.
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- W1495287300 date "2003-01-20" @default.
- W1495287300 modified "2023-09-26" @default.
- W1495287300 title "Length dependence of quantized conductance in etched GaAs/AlGaAs quantum wires" @default.
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- W1495287300 doi "https://doi.org/10.1109/iciprm.1999.773749" @default.
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