Magnetoconductivity of Dirac electrons in bismuth
| Autor: | Mitsuaki Owada, Yuki Fuseya |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Physics
History Condensed matter physics Magnetoresistance Isotropy Dirac (software) Semiclassical physics chemistry.chemical_element Inverse Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter::Disordered Systems and Neural Networks Computer Science Applications Education Magnetic field Bismuth Condensed Matter::Materials Science chemistry Kubo formula Quantum electrodynamics Condensed Matter::Strongly Correlated Electrons |
| Zdroj: | Journal of Physics: Conference Series. 603:012023 |
| ISSN: | 1742-6596 1742-6588 |
| DOI: | 10.1088/1742-6596/603/1/012023 |
| Popis: | The magnetoconductivity of bismuth is theoretically investigated on the basis of the Kubo formula to interpret the longstanding mystery of linear magnetoresistance in bismuth. First, the magnetoconductivity for the isotropic Dirac model is studied. It is found that the inverse magnetoconductivity increases quadratically at low magnetic fields and is saturated at high fields. This high field property is in contrast to that obtained by the semiclassical theory, where the inverse magnetoconductivity keeps quadratic increase. Next, the magnetoconductivity for the extended Dirac model, which is a realistic model for bismuth, is studied. The inverse magnetoconductivity so obtained is not saturated, but is reduced at high fields. Implications of present results to the linear magnetoresistivity of bismuth are discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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