Matches in SemOpenAlex for { <https://semopenalex.org/work/W2081279239> ?p ?o ?g. }
- W2081279239 abstract "The fine structure of excitons is studied by magnetophotoluminescence spectroscopy of single self-assembled In(Ga)As/(Al)GaAs quantum dots. Both strength and orientation of the magnetic field are varied. In a combination with a detailed theoretical analysis, these studies allow us to develop a comprehensive picture of the exciton fine structure. Symmetry of the dot structures as well as its breaking cause characteristic features in the optical spectra, which are determined by the electron-hole exchange and the Zeeman interaction of the carriers. The symmetry breaking is either inherent to the dot due to geometry asymmetries, or it can be obtained by applying a magnetic field with an orientation different from the dot symmetry axis. From data on spin splitting and on polarization of the emission we can identify neutral as well as charged exciton complexes. For dots with weakly broken symmetry, the angular momentum of the neutral exciton is no longer a good quantum number and the exchange interaction lifts degeneracies within the fine-structure manifold. The symmetry can be restored by a magnetic field due to the comparatively strong Zeeman interactions of electron and hole. For dots with a strongly broken symmetry, bright and dark excitons undergo a strong hybridization, as evidenced by pronounced anticrossings when states within the manifold are brought into resonance. The fine structure can no longer be described within the frame developed for structures of higher dimensionality. In particular, the hybridization cannot be broken magnetically. For charged excitons, the exchange interaction vanishes, demonstrating that the exchange splitting of a neutral exciton can be switched off by injecting an additional carrier." @default.
- W2081279239 created "2016-06-24" @default.
- W2081279239 creator A5010791138 @default.
- W2081279239 creator A5016262821 @default.
- W2081279239 creator A5022904668 @default.
- W2081279239 creator A5035572181 @default.
- W2081279239 creator A5035674736 @default.
- W2081279239 creator A5038306679 @default.
- W2081279239 creator A5051703755 @default.
- W2081279239 creator A5052237740 @default.
- W2081279239 creator A5062449944 @default.
- W2081279239 creator A5063142901 @default.
- W2081279239 creator A5065333253 @default.
- W2081279239 creator A5078328408 @default.
- W2081279239 creator A5078764514 @default.
- W2081279239 creator A5088384404 @default.
- W2081279239 date "2002-05-07" @default.
- W2081279239 modified "2023-10-10" @default.
- W2081279239 title "Fine structure of neutral and charged excitons in self-assembled In(Ga)As/(Al)GaAs quantum dots" @default.
- W2081279239 cites W1496390586 @default.
- W2081279239 cites W1574801731 @default.
- W2081279239 cites W1575982846 @default.
- W2081279239 cites W172725298 @default.
- W2081279239 cites W1964095248 @default.
- W2081279239 cites W1964496760 @default.
- W2081279239 cites W1964582743 @default.
- W2081279239 cites W1964672935 @default.
- W2081279239 cites W1965271793 @default.
- W2081279239 cites W1965310174 @default.
- W2081279239 cites W1965359552 @default.
- W2081279239 cites W1965412742 @default.
- W2081279239 cites W1966830747 @default.
- W2081279239 cites W1970427083 @default.
- W2081279239 cites W1971662449 @default.
- W2081279239 cites W1974157071 @default.
- W2081279239 cites W1979695848 @default.
- W2081279239 cites W1982564571 @default.
- W2081279239 cites W1984355488 @default.
- W2081279239 cites W1985323402 @default.
- W2081279239 cites W1986442312 @default.
- W2081279239 cites W1987136772 @default.
- W2081279239 cites W1988535294 @default.
- W2081279239 cites W1990143860 @default.
- W2081279239 cites W1990796785 @default.
- W2081279239 cites W1996506684 @default.
- W2081279239 cites W1998666653 @default.
- W2081279239 cites W1998863569 @default.
- W2081279239 cites W2000652143 @default.
- W2081279239 cites W2001454862 @default.
- W2081279239 cites W2002060775 @default.
- W2081279239 cites W2003026650 @default.
- W2081279239 cites W2005355840 @default.
- W2081279239 cites W2005736536 @default.
- W2081279239 cites W2005828416 @default.
- W2081279239 cites W2006616502 @default.
- W2081279239 cites W2009094792 @default.
- W2081279239 cites W2011926773 @default.
- W2081279239 cites W2013397084 @default.
- W2081279239 cites W2013601195 @default.
- W2081279239 cites W2014158686 @default.
- W2081279239 cites W2016399131 @default.
- W2081279239 cites W2019173859 @default.
- W2081279239 cites W2019309333 @default.
- W2081279239 cites W2020323765 @default.
- W2081279239 cites W2020342204 @default.
- W2081279239 cites W2020513742 @default.
- W2081279239 cites W2021179200 @default.
- W2081279239 cites W2021989657 @default.
- W2081279239 cites W2023604698 @default.
- W2081279239 cites W2023741248 @default.
- W2081279239 cites W2025591591 @default.
- W2081279239 cites W2025862116 @default.
- W2081279239 cites W2026272742 @default.
- W2081279239 cites W2026607056 @default.
- W2081279239 cites W2027723414 @default.
- W2081279239 cites W2028292086 @default.
- W2081279239 cites W2028539913 @default.
- W2081279239 cites W2032804400 @default.
- W2081279239 cites W2037444819 @default.
- W2081279239 cites W2041405915 @default.
- W2081279239 cites W2041684212 @default.
- W2081279239 cites W2042030144 @default.
- W2081279239 cites W2044533315 @default.
- W2081279239 cites W2044876986 @default.
- W2081279239 cites W2047682853 @default.
- W2081279239 cites W2047790655 @default.
- W2081279239 cites W2051332189 @default.
- W2081279239 cites W2051482714 @default.
- W2081279239 cites W2052017393 @default.
- W2081279239 cites W2055139071 @default.
- W2081279239 cites W2055679884 @default.
- W2081279239 cites W2055773423 @default.
- W2081279239 cites W2057424240 @default.
- W2081279239 cites W2062069768 @default.
- W2081279239 cites W2066790741 @default.
- W2081279239 cites W2068116351 @default.
- W2081279239 cites W2068579979 @default.
- W2081279239 cites W2069110537 @default.
- W2081279239 cites W2070667128 @default.
- W2081279239 cites W2070900166 @default.