Electron spin redistribution in a Kondo quantum dot in the low-magnetic-field regime
| Autor: | S. De Franceschi, Michael Stopa, W. G. van der Wiel, Seigo Tarucha, Leo P. Kouwenhoven |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Physics
Electron density Spin polarization Condensed matter physics Zero field splitting Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Atomic and Molecular Physics and Optics Electron localization function Electronic Optical and Magnetic Materials Magnetic field Quantum dot Spinplasmonics Condensed Matter::Strongly Correlated Electrons Kondo effect |
| Zdroj: | Physica E: Low-dimensional Systems and Nanostructures. 22:538-541 |
| ISSN: | 1386-9477 |
| DOI: | 10.1016/j.physe.2003.12.064 |
| Popis: | We observe an alternation of high and low valley conductance regions as a function of magnetic field for constant electron number in a Kondo quantum dot. The valley conductance also alternates between high and low as a function of electron number at constant magnetic field. Full 3D spin density functional calculations of our device quantitatively explain this behaviour in terms of a spatial redistribution of the electron spins in the dot. The spin density functional calculations provide a connection between the many-body state of the Kondo effect on the one hand, and the detailed electronic structure of our nanoscale device on the other hand. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect