Spectral function of few electrons in quantum wires and carbon nanotubes as a signature of Wigner localization
| Autor: | Secchi, Andrea, Rontani, Massimo |
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| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | Physical Review B 85, 121410(R) (2012) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevB.85.121410 |
| Popis: | We demonstrate that the profile of the space-resolved spectral function at finite temperature provides a signature of Wigner localization for electrons in quantum wires and semiconducting carbon nanotubes. Our numerical evidence is based on the exact diagonalization of the microscopic Hamiltonian of few particles interacting in gate-defined quantum dots. The minimal temperature required to suppress residual exchange effects in the spectral function image of (nanotubes) quantum wires lies in the (sub-) Kelvin range. Comment: RevTeX 4.1, 5 pages, 5 color postscript figures. This is a major revison, with new added figures, discussions, references. To appear in Physical Review B Rapid Communications (2012) |
| Databáze: | arXiv |
| Externí odkaz: |
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