Charge ratchet from spin flip: space-time symmetry paradox (2009)
Smirnov, Sergey, Bercioux, Dario, Grifoni, Milena, Richter, Klaus
Traditionally the charge ratchet effect is considered as a consequence of either the spatial symmetry breaking engineered by asymmetric periodic potentials, or time asymmetry of the driving fields....
Charge ratchet from spin flip: space-time symmetry paradox (2009)
Smirnov, Sergey, Bercioux, Dario, Grifoni, Milena, Richter, Klaus
Traditionally the charge ratchet effect is considered as a consequence of either the spatial symmetry breaking engineered by asymmetric periodic potentials, or time asymmetry of the driving fields....
Extrinsic and intrinsic ratchet response of a quantum dissipative spin-orbit medium (2009)
Smirnov, Sergey, Bercioux, Dario, Grifoni, Milena, Richter, Klaus
Traditionally the charge ratchet effect is considered as a consequence of the extrinsic spatial asymmetry engineered by external asymmetric periodic potentials. Here we demonstrate that electrically...
Extrinsic and intrinsic ratchet response of a quantum dissipative spin-orbit medium (2009)
Smirnov, Sergey, Bercioux, Dario, Grifoni, Milena, Richter, Klaus
Traditionally the charge ratchet effect is considered as a consequence of the extrinsic spatial asymmetry engineered by external asymmetric periodic potentials. Here we demonstrate that electrically...
Quantum networks in the presence of the Rashba effect and a magnetic field (2008)
Dario Bercioux, Michele Governale, Vittorio Cataudella, Vincenzo Marigliano Ramaglia
We use a simple formalism to calculate the conductance of any quantum network consisting of single-channel one-dimensional quantum wires in the presence of Rashba spin-orbit coupling and a coupling...
Federico Ii, Facoltà Di Scienze Matematiche Fisiche, Dario Bercioux, Prof Arturo Tagliacozzo
Spin-dependent transport in nanostructures Candidato Coordinatore del ciclo XVII Ciclo di dottorato Dr. Dario Bercioux
Electron tunneling into a quantum wire in the Fabry-Perot regime (2008)
Pugnetti, Stefano, Dolcini, Fabrizio, Bercioux, Dario, Grabert, Hermann
We study a gated quantum wire contacted to source and drain electrodes in the Fabry-Perot regime. The wire is also coupled to a third terminal (tip), and we allow for an asymmetry of the tip...
Smirnov, Sergey, Bercioux, Dario, Grifoni, Milena, Richter, Klaus
We investigate the existence of the pure spin ratchet effect in a dissipative quasi-one-dimensional system with Rashba spin-orbit interaction. The system is additionally placed into a transverse...
Quantum dissipative Rashba spin ratchets (2008)
Smirnov, Sergey, Bercioux, Dario, Grifoni, Milena, Richter, Klaus
We predict the possibility to generate a finite stationary spin current by applying an unbiased ac driving to a quasi-one-dimensional asymmetric periodic structure with Rashba spin-orbit interaction...
Quantum dissipative Rashba spin ratchets (2008)
Smirnov, Sergey, Bercioux, Dario, Grifoni, Milena, Richter, Klaus
We predict the possibility to generate a finite stationary spin current by applying an unbiased ac driving to a quasi-one-dimensional asymmetric periodic structure with Rashba spin-orbit interaction...
Scheid, Matthias, Bercioux, Dario, Richter, Klaus
We consider the possibility to employ a quantum wire realized in a two-dimensional electron gas (2DEG) as a spin ratchet. We show that a net spin current without accompanying net charge transport can...
Zeeman ratchets for ballistic spin currents (2006)
Scheid, Matthias, Wimmer, Michael, Bercioux, Dario, Richter, Klaus
We investigate the possiblity of creating directed spin-polarized currents in a two-dimensional electron gas (2DEG) subject to an asymmetric magnetic field and an external adiabatic driving. We...
Scheid, Matthias, Pfund, Andreas, Bercioux, Dario, Richter, Klaus
We demonstrate that the combined effect of a spatially periodic potential, lateral confinement and spin-orbit interaction gives rise to a quantum ratchet mechanism for spin-polarized currents in...
Pfund, Andreas, Bercioux, Dario, Richter, Klaus, Scheid, Matthias
We demonstrate that the combined effect of a spatially periodic potential, lateral confinement and spin-orbit interaction gives rise to a quantum ratchet mechanism for spin-polarized currents in...
Zeeman ratchets for ballistic spin currents (2006)
Scheid, Matthias, Wimmer, Michael, Bercioux, Dario, Richter, Klaus
We investigate the possiblity of creating directed spin-polarized currents in a two-dimensional electron gas (2DEG) subject to an asymmetric magnetic field and an external adiabatic driving. We...
Rashba effect in quantum networks (2005)
Bercioux, Dario, Governale, Michele, Cataudella, Vittorio, Marigliano Ramaglia, Vincenzo
We present a formalism to study quantum networks made up by single-channel quantum wires in the presence of Rashba spin-orbit coupling and magnetic field. In particular, linear transport through...
Signatures of spin-related phases in transport through regular polygons (2005)
Bercioux, Dario, Frustaglia, Diego, Governale, Michele
We address the subject of transport in one-dimensional ballistic polygon loops subject to Rashba spin-orbit coupling. We identify the role played by the polygon vertices in the accumulation of...
Rashba effect in quantum networks (2005)
Bercioux, Dario, Governale, Michele, Cataudella, Vittorio, Ramaglia, Vincenzo Marigliano
We present a formalism to study quantum networks made up by single-channel quantum wires in the presence of Rashba spin-orbit coupling and magnetic field. In particular, linear transport through...
Spin-dependent transport in nanostructures (2005)
The Dissertation takes account of the effect of the spin-orbit coupling interactions in the properties of mesoscopic systems. The Manuscript is divided in three main part. In the first part (Chapter...
Signatures of spin-related phases in transport through regular polygons (2005)
Bercioux, Dario, Frustaglia, Diego, Governale, Michele
We address the subject of transport in one-dimensional ballistic polygon loops subject to Rashba spin-orbit coupling. We identify the role played by the polygon vertices in the accumulation of...
Rashba effect induced localization in quantum networks (2004)
Bercioux, Dario, Governale, Michele, Cataudella, Vittorio, Ramaglia, Vincenzo Marigliano
We study a quantum network extending in one-dimension (chain of square loops connected at one vertex) made up of quantum wires with Rashba spin-orbit coupling. We show that the Rashba effect may give...