Magnetotransport in a chaotic scattering cavity with tunable electron density
| Autor: | Mark W. Keller, Oded Millo, Daniel E. Prober, R. N. Sacks, Anurag Mittal |
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| Rok vydání: | 1994 |
| Předmět: |
Condensed matter physics
Magnetoresistance Field (physics) Chemistry Scattering Fermi level Fermi energy Surfaces and Interfaces Condensed Matter Physics Surfaces Coatings and Films Magnetic field Nonlinear Sciences::Chaotic Dynamics Weak localization symbols.namesake Chaotic scattering Materials Chemistry symbols |
| Zdroj: | Surface Science. 305:501-506 |
| ISSN: | 0039-6028 |
| Popis: | We have measured the resistance versus magnetic field and Fermi energy for two stadium-shaped cavities in which chaotic scattering is expected. We fit the power spectra of the magnetoresistance fluctuations to semiclassical chaotic scattering theory and find a characteristic field which scales with cavity dimensions as predicted by classical simulations. Measurements of conductance versus Fermi energy indicate a significant contribution from short, non-chaotic paths. We have also studied the energy-averaged conductance as a function of magnetic field. We observe a ballistic weak localization effect similar to that predicted by recent calculations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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