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Measurement of the electronic dephasing time via the weak localization effect in a narrow channel |
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| Institution: | 1. College of Science, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;2. Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China;3. National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China;4. Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China |
| Abstract: | We have utilized the the weak localization effect in a narrow channel to measure the phase coherence time (τφ) at temperatures between 0.42 K and 4.25 K for electrons in a two-dimensional electron gas formed in a GaAs/AlxGa1-xAs heterostructure. The measured values agree well with electron-electron scattering theory in a one-dimensional channel including both single particle and collective contributions. |
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