Browsing by Author "Moldoveanu, V."
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Analysis of the phase lapse problem in closed interferometers
Tolea, M.; Moldoveanu, V.; Dinu, I. V.; Tanatar, Bilal (Elsevier B.V., 2012)We investigate the connection between the asymmetry of the Fano resonances in a mesoscopic interferometer with an embedded quantum dot and the π lapses in the phase of the bare dot transmittance. Consecutive Fano resonances ... 
Coherent and incoherent transport through Tshaped double quantum dots
Moldoveanu, V.; Ţolea, M.; Tanatar, Bilal (Elsevier B.V., 2008)We investigate the measurement induced dephasing of the Fano effect in the electronic transport through a double quantum dot mesoscopic interferometer coupled to a charge detector. The current and the differential conductance ... 
Controlled dephasing in singledot AharonovBohm interferometers
Moldoveanu, V.; Ţolea, M.; Tanatar, Bilal (2007)We study the Fano effect and the visibility of the AharonovBohm oscillations for a mesoscopic interferometer with an embedded quantum dot in the presence of a nearby second dot. When the electronelectron interaction ... 
Coulomb drag effect in parallel quantum dots
Tanatar, Bilal; Moldoveanu, V. (American Institute of Physics, 2009)We study theoretically the electronic transport in parallel fewlevel quantum dots in the presence of both intradot and interdot longrange Coulomb interaction. Each dot is connected to two leads and the steadystate ... 
Coulomb effects in open quantum dots within the randomphase approximation
Moldoveanu, V.; Tanatar, Bilal (The American Physical Society, 2008)The effect of electronelectron interactions on coherent transport in quantum dot systems is theoretically investigated by adapting the wellknown randomphase approximation (RPA) to the nonequilibrium GreenKeldysh formalism ... 
Dynamic correlation effects on the plasmon dispersion in a twodimensional electron gas
Yurtsever, A.; Moldoveanu, V.; Tanatar, Bilal (The American Physical Society, 2003)The chargedensity oscillations (plasmons) of a lowdensity twodimensional uniform electron gas are studied within the framework of finite temperature and frequency dependent (dynamic) version of Singwi, Tosi, Land, and ... 
Fano effect in a double Tshaped interferometer
Moldoveanu, V.; Dinu, I. V.; Tanatar, Bilal (Springer, 2009)We study the coherent transport in a onedimensional lead with two sidecoupled quantum dots using the Keldysh's Green function formalism.The effect of the interdot Coulomb interaction is taken into account by computing ... 
Inelastic transitions and counterflow tunneling in doubledot quantum ratchets
Moldoveanu, V.; Tanatar, Bilal (The American Physical Society, 2010)The ratchet regime of unbiased double quantum dots driven out of equilibrium by an independently biased nearby detector has been theoretically studied using the nonequilibrium Keldysh formalism and the randomphase ... 
Interaction and size effects in open nanoelectromechanical systems
Tanatar, Bilal; Moldoveanu, V.; Dragomir, R.; Stanciu, S. (WILEYVCH Verlag GmbH & Co. KGaA, Weinheim, 2019)The time‐dependent transport of a 2D quantum wire (QW) connected to source/drain leads and electrostatically coupled to a singly‐clamped InAs cantilever is investigated. The latter is placed above the nanowire and acts as ... 
Lighthole exciton mixing and dynamics in Mndoped quantum dots
Moldoveanu, V.; Dinu, I. V.; Dragomir, R.; Tanatar, Bilal (American Physical Society, 2016)We investigate theoretically the spectral and dynamical effects of the shortrange exchange interaction between a single manganese (Mn) atom hosted by cylindrical CdTe quantum dots and its lighthole excitons or biexcitons. ... 
Manybody effects in the Coulomb drag between low density electron layers
Yurtsever, A.; Moldoveanu, V.; Tanatar, Bilal (Elsevier Science, 2003)Recent Coulomb drag experiments in lowdensity doublelayer electron systems have the power of distinguishing various manybody formulations of the effective interactions. In this work we theoretically study the correlation ... 
Measurementinduced decoherence in electronic interferometry at nanoscale
Moldoveanu, V.; Tanatar, Bilal; Ţolea, M. (Elsevier B.V., 2008)We introduce a theoretical formalism describing a wide class of 'Which Path' experiments in mesoscopic/nanoscopic transport. The physical system involves a mesoscopic interferometer (e.g. an AharonovBohm ring with embedded ... 
Mesoscopic Fano effect in a spin splitter with a sidecoupled quantum dot
Moldoveanu, V.; Tolea, M.; Tanatar, Bilal (Elsevier B.V., 2012)We investigate the interplay between the spin interference and the Fano effect in a threelead mesoscopic ring with a sidecoupled quantum dot (QD). A uniform Rashba spinorbit coupling and a perpendicular magnetic field ... 
Mesoscopic fano effect in AharonovBohm rings with an embedded double dot
Tanatar, Bilal; Moldoveanu, V.; Tolea, M.; Aldea, A. (American Institute of Physics, 2006)We investigate theoretically in a tightbinding model the transport properties of the AharonovBohm interferometer (ABI) with one dot embedded in each of its arms. For weak interdot coupling the model Hamiltonian describes ... 
Mesoscopic Fano effect in an AharonovBohm interferometer Coulombcoupled to a nearby quantum dot
Tolea, M.; Moldoveanu, V.; Tanatar, Bilal (Wiley, 2007)Motivated by the pionieering experiments of Buks et al. [Nature 391, 871 (1998)] we investigate the visibility of the Fano effect in a singledot AharonovBohm interferometer which is Coulombcoupled to a nearby quantum ... 
Nonequilibrium transport and spin dynamics insinglemolecule magnets.
Moldoveanu, V.; Dinu, I. V.; Tanatar, Bilal (Academic Press, 2015)The timedependent transport through singlemolecule magnets (SMM) coupled to magnetic or nonmagnetic electrodes is studied in the framework of the generalized Masterequation (GME) method. We calculate the transient ... 
Orbital magnetization of single and double quantum dots in a tightbinding model
Aldea, A.; Moldoveanu, V.; Niţǎ, M.; Manolescu, A.; Gudmundsson, V.; Tanatar, Bilal (American Physical Society, 2003)We calculate the orbital magnetization of single and double quantum dots coupled both by Coulomb interaction and by electron tunneling. The electronic states of the quantum dots are calculated in a tightbinding model, and ... 
Quantum turnstile operation of singlemolecule magnets
Moldoveanu, V.; Dinu, I. V.; Tanatar, Bilal; Moca, C. P. (Institute of Physics Publishing, 2015)The timedependent transport through singlemolecule magnets coupled to magnetic or nonmagnetic electrodes is studied in the framework of the generalized master equation method. We investigate the transient regime induced ... 
Quantum turnstile regime of nanoelectromechanical systems
Dragomir, R.; Moldoveanu, V.; Stanciu, S.; Tanatar, Bilal (American Physical Society, 2020)The effects of a turnstile operation on the currentinduced vibron dynamics in nanoelectromechanical systems (NEMS) are analyzed in the framework of the generalized master equation. In our simulations each turnstile cycle ... 
Resonant and coherent transport through AharonovBohm interferometers with coupled quantum dots
Moldoveanu, V.; Ţolea, M.; Aldea, A.; Tanatar, Bilal (The American Physical Society, 2005)A detailed description of the tunneling processes within AharonovBohm (AB) rings containing twodimensional quantum dots is presented. We show that the electronic propagation through the interferometer is controlled by ...