| Conţinutul numărului revistei |
| Articolul precedent |
| Articolul urmator |
 152 0 |
 SM ISO690:2012KLIMIN, Serghei, FOMIN, Vladimir, BROSENS, Fons, DEVREESE, Josef T.. Ground state and optical conductivity of interacting polarons in a quantum dot. In: Physical Review B - Condensed Matter and Materials Physics, 2004, vol. 69, p. 0. ISSN 1098-0121. DOI: https://doi.org/10.1103/PhysRevB.69.235324 |
| EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
 Physical Review B - Condensed Matter and Materials Physics |
||||||
| Volumul 69 / 2004 / ISSN 1098-0121 /ISSNe 1550-235X | ||||||
|
||||||
| DOI:https://doi.org/10.1103/PhysRevB.69.235324 | ||||||
| Pag. 0-0 | ||||||
|
||||||
| Rezumat | ||||||
The ground-state energy, addition energies, and optical absorption spectra are derived for interacting polarons in parabolic quantum dots in three and two dimensions. A path integral formalism for identical particles is used in order to take into account the fermion statistics. The approach is applied to both closed-shell and open-shell systems of interacting polarons. Using a generalization of the Jensen-Feynman variational principle, the ground-state energy of a confined N-polaron system is analyzed as a function of N and of the electron-phonon coupling constant α. In contrast to few-electron systems without the electron-phonon interaction, three types of spin polarization are possible for the ground state of the few-polaron systems: (i) a spin-polarized state, (ii) a state where the spin is determined by Hund's rule, and (iii) a state with the minimal possible spin. A transition from a state fulfilling Hund's rule to a spin-polarized state occurs when the electron density is decreased. In the strong-coupling limit, the system of interacting polarons turns into a state with the minimal possible spin. These transitions should be experimentally observable in the optical absorption spectra of quantum dots. |
||||||
| Cuvinte-cheie absorption spectrophotometry, acceleration, article, Electric conductivity, energy, molecular interaction, optics, particle size, phonon, polarization, quantum mechanics, Spectrometry, statistical analysis, Vibration |
||||||
|
Dublin Core Export
<?xml version='1.0' encoding='utf-8'?> <oai_dc:dc xmlns:dc='http://purl.org/dc/elements/1.1/' xmlns:oai_dc='http://www.openarchives.org/OAI/2.0/oai_dc/' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd'> <dc:creator>Klimin, S.N.</dc:creator> <dc:creator>Fomin, V.M.</dc:creator> <dc:creator>Brosens, F.</dc:creator> <dc:creator>Devreese, J.</dc:creator> <dc:date>2004-06-28</dc:date> <dc:description xml:lang='en'><p>The ground-state energy, addition energies, and optical absorption spectra are derived for interacting polarons in parabolic quantum dots in three and two dimensions. A path integral formalism for identical particles is used in order to take into account the fermion statistics. The approach is applied to both closed-shell and open-shell systems of interacting polarons. Using a generalization of the Jensen-Feynman variational principle, the ground-state energy of a confined N-polaron system is analyzed as a function of N and of the electron-phonon coupling constant α. In contrast to few-electron systems without the electron-phonon interaction, three types of spin polarization are possible for the ground state of the few-polaron systems: (i) a spin-polarized state, (ii) a state where the spin is determined by Hund's rule, and (iii) a state with the minimal possible spin. A transition from a state fulfilling Hund's rule to a spin-polarized state occurs when the electron density is decreased. In the strong-coupling limit, the system of interacting polarons turns into a state with the minimal possible spin. These transitions should be experimentally observable in the optical absorption spectra of quantum dots.</p></dc:description> <dc:identifier>10.1103/PhysRevB.69.235324</dc:identifier> <dc:source>Physical Review B - Condensed Matter and Materials Physics () 0-0</dc:source> <dc:subject>absorption spectrophotometry</dc:subject> <dc:subject>acceleration</dc:subject> <dc:subject>article</dc:subject> <dc:subject>Electric conductivity</dc:subject> <dc:subject>energy</dc:subject> <dc:subject>molecular interaction</dc:subject> <dc:subject>optics</dc:subject> <dc:subject>particle size</dc:subject> <dc:subject>phonon</dc:subject> <dc:subject>polarization</dc:subject> <dc:subject>quantum mechanics</dc:subject> <dc:subject>Spectrometry</dc:subject> <dc:subject>statistical analysis</dc:subject> <dc:subject>Vibration</dc:subject> <dc:title>Ground state and optical conductivity of interacting polarons in a quantum dot</dc:title> <dc:type>info:eu-repo/semantics/article</dc:type> </oai_dc:dc>
|
|
|
