Exchange interaction and stability diagram of coupled quantum dots in magnetic fields
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چکیده
منابع مشابه
Energy states and exchange energy of coupled double quantum dot in a magnetic field
The ground state energies of two interacting electrons confined in a coupled double quantum dot (DQD) presented in a magnetic field has been calculated by solving the relative Hamiltonian using variational and exact diagonalization methods. The singlet-triplet transitions in the angular momentum and spin of the quantum dot ground state had been shown .We have studied the magnetic field versus c...
متن کاملEnergy states and exchange energy of coupled double quantum dot in a magnetic field
The ground state energies of two interacting electrons confined in a coupled double quantum dot (DQD) presented in a magnetic field has been calculated by solving the relative Hamiltonian using variational and exact diagonalization methods. The singlet-triplet transitions in the angular momentum and spin of the quantum dot ground state had been shown .We have studied the magnetic field versus c...
متن کاملRectangular quantum dots in high magnetic fields
Rights: © 2004 American Physical Society (APS). This is the accepted version of the following article: Räsänen, E. & Harju, A. & Puska, M. J. & Nieminen, Risto M. 2004. Rectangular quantum dots in high magnetic fields. Physical Review B. Volume 69, Issue 16. 165309/1-5. ISSN 1550-235X (electronic). DOI: 10.1103/physrevb.69.165309, which has been published in final form at http://journals.aps.or...
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Several prominent proposals have suggested that spins of localized electrons could serve as quantum computer qubits. The exchange interaction has been invoked as a means of implementing two qubit gates. In this paper, we analyze the strength and form of the exchange interaction under relevant conditions. We find that, when several spins are engaged in mutual interactions, the quantitative stren...
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In artificial nanostructures the control of localized, single spin is of great technological importance for nanospintronic applications. In that respect quantum dots (QD), as the building blocks of nanodevices, seem to be most perspective. Quantum dots are electronic systems which confine a well-defined number of electrons. The total spin of a dot can be integer or half-integer (the latter stan...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2006
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.74.205306