6533b86cfe1ef96bd12c7efa
RESEARCH PRODUCT
Low-energy spectrum and finite temperature properties of quantum rings
M. KoskinenPekka KoskinenM. Manninensubject
PhysicsCondensed matter physicsRotational transitionCondensed Matter PhysicsQuantum numberSpin quantum numberMolecular physicsElectronic Optical and Magnetic MaterialsAzimuthal quantum numbersymbols.namesakePauli exclusion principleTotal angular momentum quantum numberPrincipal quantum numberAngular momentum couplingsymbolsdescription
Recently it was demonstrated that the rotational and vibrational spectra of quantum rings containing few electrons can be described quantitatively by an effective spin-Hamiltonian combined with rigid center-of-mass rotation and internal vibrations of localized electrons. We use this model Hamiltonian to study the quantum rings at finite temperatures and in presence of a nonzero magnetic field. Total spin, angular momentum and pair correlation show similar phase diagram which can be understood with help of the rotational spectrum of the ring.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2002-08-01 | The European Physical Journal B |