New Method for High-Accuracy Determination of the Fine-Structure Constant Based on Quantized Hall Resistance
TLDR
In this article, the Hall voltage of a two-dimensional electron gas, realized with a silicon metal-oxide-semiconductor field effect transistor, was measured and it was shown that the Hall resistance at particular, experimentally well-defined surface carrier concentrations has fixed values which depend only on the fine-structure constant and speed of light, and is insensitive to the geometry of the device.Abstract:
Measurements of the Hall voltage of a two-dimensional electron gas, realized with a silicon metal-oxide-semiconductor field-effect transistor, show that the Hall resistance at particular, experimentally well-defined surface carrier concentrations has fixed values which depend only on the fine-structure constant and speed of light, and is insensitive to the geometry of the device. Preliminary data are reported.read more
Citations
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Topological insulators and superconductors
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Berry phase effects on electronic properties
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References
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Solution of the Field Problem of the Germanium Gyrator
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TL;DR: In this article, the capacitance of a cylindrical system was investigated and it was shown that capacitance depends on one length only to the first order, provided the asymmetry was not too great, a standard capacitor could be constructed which required only one length measurement for the computation of its capacitance.
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Theory of Quantum Transport in a Two-Dimensional Electron System under Magnetic Fields. III. Many-Site Approximation
TL;DR: In this article, the effects of simultaneous scattering from many scatterers on the level broadening of each Landau level are investigated by assuming short-ranged scatterrs, and the double-site approximation does not give physically reasonable solution of the self-consistency equation which determines the Green's function.
Journal ArticleDOI
Improved Method for Measuring Hall Coefficients
TL;DR: In this article, the influence of the current electrodes on measurements of the Hall coefficient is examined, and the conditions for maximum sensitivity are given, and experiments verifying these results are described.