Quantum Hall Effect Transport (10 results)

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Taschenbuch. Condition: Neu. Druck auf Anfrage Neuware - Printed after ordering - High magnetic fields have, for a long time, been animportant tool in the investigation of the electronicstructure of semiconductors. In recent yearsstudies ofheterostructures and superlattices have predominated, andthis emphasis is reflected in these proceedings. Thecontributions concentrate on experiments using transport andoptical methods, but recent theoretical developments arealso covered. Special attention is paid to the quantum Halleffect, including the problem of edge currents, theinfluence of contacts, and Wigner condensation in thefractional quantum Hall effect regime.The 27 invited contributions by renowned expertsprovide anexcellent survey of the field that is complemented bynumerous contributed papers. …

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Taschenbuch. Condition: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - At low temperature, the transverse transport ofparticles subjected to an external magnetic field is quantized. Thisquantum Hall effect is elegantly described at the single-particle levelin terms of topological invariants called the Chern numbers. In this work, one presents several methods that allowthe numerical and analytical computation of these Chern numbers fora huge variety of physical systems. In particular, one applies these methods to ultracoldatoms trapped in optical lattices and subjected to external Abelianand non-Abelian gaugefields. Then one investigates thespectral properties of quantum graphs and establishes thequantization of the Hall conductivity for these systems.Finally, one explores the Mott quantum phasetransition in optical lattices subjected to external gauge fields.Furthermore, one shows that vortices are created in the vicinity of the Mottregime. This work presents powerful tools for the study ofquantum transport properties in both condensed matter andcold atomssystems, and should therefore be useful to modern theoreticalphysicists.…