Antilevitation of Landau levels in vanishing magnetic fields
| Autor: | Kirk Baldwin, Loren Pfeiffer, D. C. Tsui, Ken W. West, Wei Pan |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Physics
Electron density Condensed matter physics Magnetoresistance Quantum oscillations 02 engineering and technology Electron Landau quantization Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology 01 natural sciences Landau theory Shubnikov–de Haas effect Magnetic field Quantum mechanics 0103 physical sciences 010306 general physics 0210 nano-technology |
| Zdroj: | Physical Review B. 94 |
| ISSN: | 2469-9969 2469-9950 |
| DOI: | 10.1103/physrevb.94.161303 |
| Popis: | We report in this Rapid Communication an antilevitation behavior of Landau levels in vanishing magnetic fields in a high quality heterojunction insulated-gated field-effect transistor. We found, in the Landau fan diagram of electron density versus magnetic field, the positions of the magnetoresistance minima at Landau-level fillings $\ensuremath{\nu}=4\ensuremath{-}6$ move below the ``traditional'' Landau-level line to lower electron densities. Moreover, the even and odd filling factors show quantitatively different behaviors in antilevitation, suggesting that the exchange interactions may be important. |
| Databáze: | OpenAIRE |
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