Matches in SemOpenAlex for { <https://semopenalex.org/work/W2070496590> ?p ?o ?g. }
Showing items 1 to 88 of
88
with 100 items per page.
- W2070496590 abstract "The properties of an exciton in a type-II quantum dot are studied under the influence of a perpendicular applied magnetic field. The dot is modeled by a quantum disk with radius R, thickness d and the electron is confined in the disk, whereas the hole is located in the barrier. The exciton energy and wave functions are calculated applying a self-consistent mean-field theory in the Hartree approximation using a finite difference mesh method. We distinguish two different regimes, namely, $densuremath{ll}2R$ (the hole is located above and below the disk) and $densuremath{gg}2R$ (the hole is located at the radial boundary of the disk), for which angular momentum (l) transitions are predicted with increasing magnetic field. We also considered a system of two vertically coupled dots where now an extra parameter is introduced, namely, the interdot distance ${d}_{z}.$ For a sufficient large magnetic field, each ${l}_{h}$ state becomes spontaneous symmetry broken with the electron and the hole moving towards one of the dots. This transition is induced by the Coulomb interaction and leads to a magnetic-field-induced dipole moment. No such symmetry-broken ground states are found for a single dot (and for three vertically coupled symmetric quantum disks). For a system of two vertically coupled truncated cones, which is asymmetric from the start, we still find angular momentum transitions. For a symmetric system of three vertically coupled quantum disks, the system resembles for small ${d}_{z}$ the pillarlike regime of a single dot, where the hole tends to stay at the radial boundary, which induces angular momentum transitions with increasing magnetic field. For larger ${d}_{z}$ the hole can sit between the disks and the ${l}_{h}=0$ state remains the ground state for the whole B region." @default.
- W2070496590 created "2016-06-24" @default.
- W2070496590 creator A5027810084 @default.
- W2070496590 creator A5047355375 @default.
- W2070496590 creator A5077601154 @default.
- W2070496590 date "2002-08-06" @default.
- W2070496590 modified "2023-09-26" @default.
- W2070496590 title "Single and vertically coupled type-II quantum dots in a perpendicular magnetic field: Exciton ground-state properties" @default.
- W2070496590 cites W1542955343 @default.
- W2070496590 cites W1968634213 @default.
- W2070496590 cites W1983758764 @default.
- W2070496590 cites W1984307067 @default.
- W2070496590 cites W1991764529 @default.
- W2070496590 cites W1996445338 @default.
- W2070496590 cites W1998284683 @default.
- W2070496590 cites W1999157706 @default.
- W2070496590 cites W2001879556 @default.
- W2070496590 cites W2002310052 @default.
- W2070496590 cites W2020378235 @default.
- W2070496590 cites W2032491949 @default.
- W2070496590 cites W2036675847 @default.
- W2070496590 cites W2038910288 @default.
- W2070496590 cites W2047682853 @default.
- W2070496590 cites W2048213456 @default.
- W2070496590 cites W2054625634 @default.
- W2070496590 cites W2064297728 @default.
- W2070496590 cites W2074279575 @default.
- W2070496590 cites W2092954433 @default.
- W2070496590 cites W2111402888 @default.
- W2070496590 cites W2128507795 @default.
- W2070496590 cites W2132721599 @default.
- W2070496590 cites W2163447420 @default.
- W2070496590 doi "https://doi.org/10.1103/physrevb.66.075314" @default.
- W2070496590 hasPublicationYear "2002" @default.
- W2070496590 type Work @default.
- W2070496590 sameAs 2070496590 @default.
- W2070496590 citedByCount "36" @default.
- W2070496590 countsByYear W20704965902012 @default.
- W2070496590 countsByYear W20704965902013 @default.
- W2070496590 countsByYear W20704965902014 @default.
- W2070496590 countsByYear W20704965902015 @default.
- W2070496590 countsByYear W20704965902017 @default.
- W2070496590 countsByYear W20704965902021 @default.
- W2070496590 crossrefType "journal-article" @default.
- W2070496590 hasAuthorship W2070496590A5027810084 @default.
- W2070496590 hasAuthorship W2070496590A5047355375 @default.
- W2070496590 hasAuthorship W2070496590A5077601154 @default.
- W2070496590 hasBestOaLocation W20704965902 @default.
- W2070496590 hasConcept C115260700 @default.
- W2070496590 hasConcept C121332964 @default.
- W2070496590 hasConcept C124657808 @default.
- W2070496590 hasConcept C147120987 @default.
- W2070496590 hasConcept C155675718 @default.
- W2070496590 hasConcept C17729963 @default.
- W2070496590 hasConcept C26873012 @default.
- W2070496590 hasConcept C45193367 @default.
- W2070496590 hasConcept C62520636 @default.
- W2070496590 hasConcept C69523127 @default.
- W2070496590 hasConceptScore W2070496590C115260700 @default.
- W2070496590 hasConceptScore W2070496590C121332964 @default.
- W2070496590 hasConceptScore W2070496590C124657808 @default.
- W2070496590 hasConceptScore W2070496590C147120987 @default.
- W2070496590 hasConceptScore W2070496590C155675718 @default.
- W2070496590 hasConceptScore W2070496590C17729963 @default.
- W2070496590 hasConceptScore W2070496590C26873012 @default.
- W2070496590 hasConceptScore W2070496590C45193367 @default.
- W2070496590 hasConceptScore W2070496590C62520636 @default.
- W2070496590 hasConceptScore W2070496590C69523127 @default.
- W2070496590 hasIssue "7" @default.
- W2070496590 hasLocation W20704965901 @default.
- W2070496590 hasLocation W20704965902 @default.
- W2070496590 hasOpenAccess W2070496590 @default.
- W2070496590 hasPrimaryLocation W20704965901 @default.
- W2070496590 hasRelatedWork W1471475116 @default.
- W2070496590 hasRelatedWork W1505210262 @default.
- W2070496590 hasRelatedWork W1972005558 @default.
- W2070496590 hasRelatedWork W2020323765 @default.
- W2070496590 hasRelatedWork W2080532737 @default.
- W2070496590 hasRelatedWork W2089709660 @default.
- W2070496590 hasRelatedWork W2393032026 @default.
- W2070496590 hasRelatedWork W2526893805 @default.
- W2070496590 hasRelatedWork W2776110889 @default.
- W2070496590 hasRelatedWork W2796568834 @default.
- W2070496590 hasVolume "66" @default.
- W2070496590 isParatext "false" @default.
- W2070496590 isRetracted "false" @default.
- W2070496590 magId "2070496590" @default.
- W2070496590 workType "article" @default.