Tunable spin-dependent transport in the dot–ring nanostructure
- Resource Type
- Authors
- Maciej M. Maśka; B. Kȩdzierska; Anna Gorczyca-Goraj; Elżbieta Zipper
- Source
- International Journal of Modern Physics B. 32:1840029
- Subject
- Materials science
Nanostructure
Condensed Matter - Mesoscale and Nanoscale Physics
Condensed matter physics
FOS: Physical sciences
Statistical and Nonlinear Physics
02 engineering and technology
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
021001 nanoscience & nanotechnology
Condensed Matter Physics
Ring (chemistry)
01 natural sciences
Quantum dot
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
0103 physical sciences
Electrode
010306 general physics
0210 nano-technology
Quantum
Computer Science::Databases
Negative differential conductance
Nanoring
Spin-½
- Language
- ISSN
- 1793-6578
0217-9792
We study spin-dependent transport through a quantum nanostructure composed of a quantum dot (QD) surrounded by a quantum nanoring. The nanostructure is side-attached to source and drain electrodes and we assume that the confining potential that forms the nanostructure can be controlled by electrical gating. We demonstrate that depending on the model parameters the system can exhibit positive as well as negative differential conductance (NDC). What is more interesting, these properties can be easily controlled by tuning the applied gate voltage.
12 pages, 10 figures