Two-Electron Quantum Dot Molecule: Composite Particles and the Spin Phase Diagram

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorHarju, A.
dc.contributor.authorSiljamäki, S.
dc.contributor.authorNieminen, Risto M.
dc.contributor.departmentTeknillisen fysiikan laitosfi
dc.contributor.departmentDepartment of Applied Physicsen
dc.contributor.schoolPerustieteiden korkeakoulufi
dc.contributor.schoolSchool of Scienceen
dc.date.accessioned2015-09-02T09:01:51Z
dc.date.available2015-09-02T09:01:51Z
dc.date.issued2002
dc.description.abstractWe study a two-electron quantum dot molecule in a magnetic field by the direct diagonalization of the Hamiltonian matrix. The ground states of the molecule with the total spin S=0 and S=1 provide a possible realization for a qubit of a quantum computer. Switching between the states is best achieved by changing the magnetic field. Based on an analysis of the wave function, we show that the system consists of composite particles formed by an electron and flux quanta attached to it. This picture can also be used to explain the spin phase diagram.en
dc.description.versionPeer revieweden
dc.format.extent226804/1-4
dc.format.mimetypeapplication/pdfen
dc.identifier.citationHarju, A. & Siljamäki, S. & Nieminen, Risto M. 2002. Two-Electron Quantum Dot Molecule: Composite Particles and the Spin Phase Diagram. Physical Review Letters. Volume 88, Issue 22. 226804/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.88.226804.en
dc.identifier.doi10.1103/physrevlett.88.226804
dc.identifier.issn0031-9007 (printed)
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/17558
dc.identifier.urnURN:NBN:fi:aalto-201509024177
dc.language.isoenen
dc.publisherAmerican Physical Society (APS)en
dc.relation.ispartofseriesPhysical Review Lettersen
dc.relation.ispartofseriesVolume 88, Issue 22
dc.rights© 2002 American Physical Society (APS). This is the accepted version of the following article: Harju, A. & Siljamäki, S. & Nieminen, Risto M. 2002. Two-Electron Quantum Dot Molecule: Composite Particles and the Spin Phase Diagram. Physical Review Letters. Volume 88, Issue 22. 226804/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.88.226804, which has been published in final form at http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.88.226804.en
dc.rights.holderAmerican Physical Society (APS)
dc.subject.keywordquantum dotsen
dc.subject.keywordmoleculesen
dc.subject.keywordmagnetic fieldsen
dc.subject.otherPhysicsen
dc.titleTwo-Electron Quantum Dot Molecule: Composite Particles and the Spin Phase Diagramen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.dcmitypetexten
dc.type.versionFinal published versionen

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