منابع مشابه
Mapping of AlxGa12xAs band edges by ballistic electron emission spectroscopy
We have employed ballistic electron emission microscopy ~BEEM! to study the energy positions in the conduction band of AlxGa12xAs. Epilayers of undoped AlxGa12xAs were grown by molecular beam epitaxy on conductive GaAs substrates. The Al composition x took on values of 0, 0.11, 0.19, 0.25, 0.50, 0.80 and 1 so that the material was examined in both the direct and indirect band gap regime. The Al...
متن کاملBallistic Electron Emission Microscopy/Spectroscopy on Au/Titanylphthalocyanine/GaAs Heterostructures
In this article Au/titanylphthalocyanine/GaAs diodes incorporating ultra smooth thin films of the archetypal organic semiconductor titanylphthalocyanine (TiOPc) were investigated by Ballistic Electron Emission Microscopy/Spectroscopy (BEEM/S). Analyzing the BEEM spectra, we find that the TiOPc increases the BEEM threshold voltage compared to reference Au/GaAs diodes. From BEEM images taken we c...
متن کاملEffect of Electron Scattering on Second Derivative Ballistic Electron Emission Spectroscopy in AuyGaAsyAlGaAs Heterostructures
We present a quantitative study of the second voltage derivative (SD) of ballistic electron emission spectra of AuyGaAsyAlGaAs heterostructures to probe the effect of electron scattering on these spectra. Our analysis of the SD spectra shows that strong electron scattering occurs at the nonepitaxial AuyGaAs interface, leading to an experimentally observed redistribution of current among the ele...
متن کاملBallistic electron waveguide adder
We analyze a quantum network, constructed with ballistic electron waveguides, which can add one-bit binary numbers. We consider two different adder networks, one constructed with Hadamard gates and the other constructed with ÎNOT gates. Reflection of electron probability at the gates causes a loss in fidelity of the overall calculation. A fidelity requirement for the implementation of individua...
متن کاملBallistic Single-Electron Quputer
We propose a new solid state implementation of a quantum computer (quputer) using ballistic single electrons as flying qubits in 1D nanowires. We use a single electron pump (SEP) to prepare the initial state and a single electron transistor (SET) to measure the final state. Single qubit gates are implemented using quantum dots as phase shifters and electron waveguide couplers as beam splitters....
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ژورنال
عنوان ژورنال: Applied Physics Letters
سال: 2006
ISSN: 0003-6951,1077-3118
DOI: 10.1063/1.2393168