Spectroscopy, Interactions, and Level Splittings in Au Nanoparticles
| Autor: | Michael Tinkham, Dragomir Davidovic |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Physics
Zeeman effect Condensed Matter - Mesoscale and Nanoscale Physics FOS: Physical sciences General Physics and Astronomy Nanoparticle Spectral line Magnetic field symbols.namesake Mesoscale and Nanoscale Physics (cond-mat.mes-hall) symbols Atomic physics Electronic energy Spectroscopy Merge (version control) Quantum tunnelling |
| Zdroj: | Physical Review Letters. 83:1644-1647 |
| ISSN: | 1079-7114 0031-9007 |
| Popis: | We have measured the electronic energy spectra of nm-scale Au particles using a new tunneling spectroscopy configuration. The particle diameters ranged from 5nm to 9nm, and at low energies the spectrum is discrete, as expected by the electron-in-a-box model. The density of tunneling resonances increases rapidly with energy, and at higher energies the resonances overlap forming broad resonances. Near the Thouless energy, the broad resonances merge into a continuum. The tunneling resonances display Zeeman splitting in a magnetic field. Surprisingly, the g-factors (~0.3) of energy levels in Au nano-particles are much smaller than the g-factor (2.1) in bulk gold. |
| Databáze: | OpenAIRE |
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