Stability of spintronic devices based on quantum ring networks

  title={Stability of spintronic devices based on quantum ring networks},
  author={P'eter Foldi and Orsolya K{\'a}lm{\'a}n and François M. Peeters},
  journal={Physical Review B},
Transport properties in mesoscopic networks are investigated, where the strength of the (Rashba-type) spin-orbit coupling is assumed to be tuned with external gate voltages. We analyze in detail to what extent the ideal behavior and functionality of some promising network-based devices are modified by random (spin-dependent) scattering events and by thermal fluctuations. It is found that although the functionality of these devices is obviously based on the quantum coherence of the transmitted… Expand
Nanojunctions as logic operators for the spintronics
AbstractWe propose two all-electrical nanodevices where the spin properties of an incoming electron are modified by the spin-orbit interaction (SOI), resulting in a transformation of the qubit stateExpand
Fano antiresonance and perfect spin-filtering in a diamondlike quantum network device: Nonequilibrium Green’s function approach
Electronic transport through a diamondlike quantum network device composed of multiple quantum dots (QDs) is theoretically studied by means of the nonequilibrium Green’s function approach. In thisExpand
Quantum nanojunctions as spintronic logic operators: Gate response in a two input ballistic interferometer
We discuss the electron transport for a spin polarized current through a ballistic quantum nanojunction formed by two quantum dots (QDs) and a semiconducting quantum wire. We explore theExpand
Logical spin-filtering in a triangular network of quantum nanorings with a Rashba spin-orbit interaction
Abstract The spin-resolved electron transport through a triangular network of quantum nanorings is studied in the presence of Rashba spin-orbit interaction (RSOI) and a magnetic flux using quantumExpand
Quantum Confinement of Chiral Charge Carriers in Ring Conductors
We theoretically study the quantum confinement effects and transport properties of quantum ring (QR) systems. In particular, we investigate QRs made out of the following materials: single-layerExpand
Electronic structure and Landé g-factor of a quantum ring in the presence of spin-orbit coupling: Temperature and Zeeman effect
Abstract A wide variety of semiconductor nanostructures have been fabricated experimentally and both theoretical and experimental investigations of their features imply the great role they have inExpand
Radius effect on the spintronic properties of a triangular network of quantum nanorings in the presence of Rashba spin-orbit interaction
Abstract The effect of radius on conductance and spin transport through a triangular array of quantum nanorings (QR) in the presence of Rashba spin-orbit interaction (RSOI) is studied. By usingExpand
Selective spin transmission through a driven quantum system: A new prescription
Several proposals are available to get selective spin transmission through different nano-junctions and in all the cases the regulation is done either by applying a magnetic field or by tuningExpand
Spin transport through a quantum network: Effects of Rashba spin-orbit interaction and Aharonov–Bohm flux
We address spin dependent transport through an array of diamonds in the presence of Rashba spin-orbit (SO) interaction where each diamond plaquette is penetrated by an Aharonov–Bohm (AB) flux ϕ. TheExpand
Cylindric quantum wires in a threading magnetic field: A proposal of characterization based on zero bias electron transport
We study the quantum transport properties of cylindrical shaped wires, with submicrometric diameters and large aspect ratio. The zero bias conductance as a function of temperature, magnetic field andExpand


Electronic transport in mesoscopic systems
1. Preliminary concepts 2. Conductance from transmission 3. Transmission function, S-matrix and Green's functions 4. Quantum Hall effect 5. Localisation and fluctuations 6. Double-barrier tunnellingExpand
Numerical recipes in C++: the art of scientific computing, 2nd Edition (C++ ed., print. is corrected to software version 2.10)
F uther repruction, or ny coying of m acineredable fles (inluding his one) to ny srver om pter, is sictly proibited. Expand