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Book synopsis

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.

Book details

Book category Books in English Technology, engineering, agriculture Industrial chemistry & manufacturing technologies Other manufacturing technologies

• Full title: Control of Magnetotransport in Quantum Billiards
• Subtitle: Theory, Computation and Applications
• Author: Christian Morfonios, Peter Schmelcher
• Language: English
• Binding: Paperback
• Number of pages: 252
• EAN: 9783319398310
• ISBN: 9783319398310
• ID: 10929017
• Publisher: Springer International Publishing AG
• Weight: 4044 g
• Dimensions: 235 × 155 × 16 mm
• Date of publishing: 17. November 2016

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