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RESEARCH PRODUCT

Finite Size Effects on the Optical Transitions in Quantum Rings under a Magnetic Field

Tatyana V. BandosAlberto García-cristóbalAndrés Cantarero

subject

PhysicsRing (mathematics)Condensed Matter - Materials ScienceCondensed matter physicsCondensed Matter - Mesoscale and Nanoscale Physicsbusiness.industryMaterials Science (cond-mat.mtrl-sci)FOS: Physical sciencesCondensed Matter PhysicsUncorrelatedElectronic Optical and Magnetic MaterialsMagnetic fieldSingle electronSemiconductorQuantum dotEnergy spectrumMesoscale and Nanoscale Physics (cond-mat.mes-hall)businessQuantum

description

We present a theoretical study of the energy spectrum of single electron and hole states in quantum dots of annular geometry under a high magnetic field along the ring axis in the frame of uncorrelated electron-hole theory. We predict the periodic disappearance of the optical emission of the electron-hole pair as the magnetic field increases, as a consequence of the finite height of the barriers. The model has been applied to semiconductor rings of various internal and external radii, giving as limiting cases the disk and antidot.

yearjournalcountryeditionlanguage
2006-09-01
10.1140/epjb/e2006-00351-2http://arxiv.org/abs/cond-mat/0604393