2007/12/03 by JI Climente, J I Climente, J Planelles
Chemistry · Engineering · Physics and Astronomy · #Advanced Physical and Chemical Molecular Interactions #Angular momentum #Electron #Ground state #Magnetic field #Magnetic flux #Molecular Junctions and Nanostructures #Principal quantum number #Quantum #Quantum and electron transport phenomena #Quantum state #Quantum tunnelling #cond-mat.mes-hall
paper · pdf · doi:10.1088/0953-8984/20/03/035212
published as J. Phys.: Condens. Matter 20 (2008) 035212 · 16 pages (iopart format), 10 figures, accepted in J.Phys.Cond.Matt
arxiv created 2007/12/03 · openalex publication_date 2007/12/17 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The molecular states of conduction electrons in laterally coupled quantum rings are investigated theoretically. The states are shown to have a distinct magnetic field dependence, which gives rise to periodic fluctuations of the tunnel splitting and ring angular momentum in the vicinity of the ground state crossings. The origin of these effects can be traced back to the Aharonov-Bohm oscillations of the energy levels, along with the quantum mechanical tunneling between the rings. We propose a setup using double quantum rings which shows that Aharonov-Bohm effects can be observed even if the net magnetic flux trapped by the carriers is zero.