|
|
|
|
|
|
|
|
|
1. |
Record Nr. |
UNINA9910250049503321 |
|
|
Autore |
Morfonios Christian V |
|
|
Titolo |
Control of Magnetotransport in Quantum Billiards : Theory, Computation and Applications / / by Christian V. Morfonios, Peter Schmelcher |
|
|
|
|
|
|
|
Pubbl/distr/stampa |
|
|
Cham : , : Springer International Publishing : , : Imprint : Springer, , 2017 |
|
|
|
|
|
|
|
|
|
ISBN |
|
|
|
|
|
|
Edizione |
[1st ed. 2017.] |
|
|
|
|
|
Descrizione fisica |
|
1 online resource (X, 252 p. 49 illus., 48 illus. in color.) |
|
|
|
|
|
|
Collana |
|
Lecture Notes in Physics, , 0075-8450 ; ; 927 |
|
|
|
|
|
|
Disciplina |
|
|
|
|
|
|
Soggetti |
|
Semiconductors |
Optical materials |
Electronic materials |
Nanotechnology |
Magnetism |
Magnetic materials |
Nanoscale science |
Nanoscience |
Nanostructures |
Optical and Electronic Materials |
Nanotechnology and Microengineering |
Magnetism, Magnetic Materials |
Nanoscale Science and Technology |
|
|
|
|
|
|
|
|
Lingua di pubblicazione |
|
|
|
|
|
|
Formato |
Materiale a stampa |
|
|
|
|
|
Livello bibliografico |
Monografia |
|
|
|
|
|
Nota di contenuto |
|
Introduction -- Electrons in mesoscopic low-dimensional systems -- Coherent electronic transport: Landauer-Büttiker formalism -- Stationary scattering in planar confining geometries -- Computational quantum transport in multiterminal and multiply connected structures -- Magnetoconductance switching by phase modulation in arrays of oval quantum billiards -- Current control in soft-wall electron billiards: energy-persistent scattering in the deep quantum regime -- Directional transport in multiterminal focusing quantum billiards -- |
|
|
|
|
|
|
|
|
|
|
|
Summary, conclusions, and perspectives. |
|
|
|
|
|
|
Sommario/riassunto |
|
In this book the coherent quantum transport of electrons through two-dimensional mesoscopic structures is explored in dependence of the interplay between the confining geometry and the impact of applied magnetic fields, aiming at conductance controllability. After a top-down, insightful presentation of the elements of mesoscopic devices and transport theory, a computational technique which treats multiterminal structures of arbitrary geometry and topology is developed. The method relies on the modular assembly of the electronic propagators of subsystems which are inter- or intra-connected providing large flexibility in system setups combined with high computational efficiency. Conductance control is first demonstrated for elongated quantum billiards and arrays thereof where a weak magnetic field tunes the current by phase modulation of interfering lead-coupled states geometrically separated from confined states. Soft-wall potentials are then employed for efficient and robust conductance switching by isolating energy persistent, collimated or magnetically deflected electron paths from Fano resonances. In a multiterminal configuration, the guiding and focusing property of curved boundary sections enables magnetically controlled directional transport with input electron waves flowing exclusively to selected outputs. Together with a comprehensive analysis of characteristic transport features and spatial distributions of scattering states, the results demonstrate the geometrically assisted design of magnetoconductance control elements in the linear response regime. |
|
|
|
|
|
|
|
| |