Effect of electron-electron interaction on the phonon-mediated spin relaxation in quantum dots (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Effect of electron-electron interaction on the phonon-mediated spin relaxation in quantum dots (Articolo in rivista) (literal)

Anno

• 2007-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1103/PhysRevB.76.085305 (literal)

Alternative label

• Climente, JI; Bertoni, A; Goldoni, G; Rontani, M; Molinari, E (2007)
  Effect of electron-electron interaction on the phonon-mediated spin relaxation in quantum dots
  in Physical review. B, Condensed matter and materials physics
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Climente, JI; Bertoni, A; Goldoni, G; Rontani, M; Molinari, E (literal)

Pagina inizio

• 085305 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://link.aps.org/doi/10.1103/PhysRevB.76.085305 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 76 (literal)

Rivista

• Physical review. B, Condensed matter and materials physics (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

• 11 (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Natl Ctr Nanostruct & Biosyst Surfaces S3, INFM, CNR, I-41100 Modena, Italy; Univ Modena & Reggio Emilia, Dipartimento Fis, I-41100 Modena, Italy (literal)

Titolo

• Effect of electron-electron interaction on the phonon-mediated spin relaxation in quantum dots (literal)

Abstract

• We estimate the spin relaxation rate due to spin-orbit coupling and acoustic phonon scattering in weakly confined quantum dots with up to five interacting electrons. The full configuration interaction approach is used to account for the interelectron repulsion, and Rashba and Dresselhaus spin-orbit couplings are exactly diagonalized. We show that electron-electron interaction strongly affects spin-orbit admixture in the sample. Consequently, relaxation rates strongly depend on the number of carriers confined in the dot. We identify the mechanisms which may lead to improved spin stability in few electron (> 2) quantum dots as compared to the usual one and two electron devices. Finally, we discuss recent experiments on triplet-singlet transitions in GaAs dots subject to external magnetic fields. Our simulations are in good agreement with the experimental findings, and support the interpretation of the observed spin relaxation as being due to spin-orbit coupling assisted by acoustic phonon emission. (literal)

Prodotto di

• Teoria e simulazione di materiali nanostrutturati (MD.P06.012.001) (Modulo)

Autore CNR

• GUIDO GOLDONI (Persona)
• ANDREA BERTONI (Persona)
• MASSIMO RONTANI (Unità di personale interno)
• ELISA MOLINARI (Unità di personale esterno)

Insieme di parole chiave

• Keywords of "Effect of electron-electron interaction on the phonon-mediated spin relaxation in quantum dots" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• MASSIMO RONTANI (Unità di personale interno)
• ANDREA BERTONI (Persona)
• ELISA MOLINARI (Unità di personale esterno)
• GUIDO GOLDONI (Persona)

Prodotto

• Teoria e simulazione di materiali nanostrutturati (MD.P06.012.001) (Modulo)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Physical review. B, Condensed matter and materials physics (Rivista)

Insieme di parole chiave di

• Keywords of "Effect of electron-electron interaction on the phonon-mediated spin relaxation in quantum dots" (Insieme di parole chiave)