Quantum Mechanical Tunnelling And Its Applications

Download or read book Quantum Mechanical Tunnelling and Its Applications written by D Roy and published by World Scientific. This book was released on 1986-12-01 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a new approach to quantum mechanical tunnelling and its applications to various fields of physics. The conventional concepts of this phenomenon, which are based on a time-dependent or time-independent approach, are inadequate in providing explanations for 1) the limit of resolution of field-emission microscope, 2) the Esaki-Integral representation the tunnelling I-V characteristics of tunnel diodes, 3) the Josephson effect, 4) the tunnelling time, etc. The new theory presented here not only provides adequate explanation for all the above-mentioned effects but also gives an accurate expression for tunnelling current density which predicts results closer to the experimentally observed values. The new presentation also provides a more comprehensive description of the results obtained using older treatment. Contents:Quantum Mechanical Tunnelling:Conventional Formulations of the Tunnelling ProblemInadequacies of Conventional Tunnelling FormulationsA Recent Application of TunnellingThe New Tunnelling Theory:The Barrier Hamiltonian and the Wave FunctionThe Tunnelling Probability and Tunnelling TimeThe Tunnelling Current DensityThe Theory of Indirect TunnellingTunnelling in Rectangular Barrier Systems:Metal-Insulator-Metal (MIM) JunctionMetal-Insulator-Semiconductor (MIS) JunctionMetal-Insulator-Semiconductor Switch (MISS)Normal Metal-Insulator-Superconductor (NIS) JunctionSuperconductor-Insulator-Superconductor (S1-I-S2) JunctionJosephson EffectThe Semiconductor HeterostructuresTunnelling in Triangular Barrier Systems:Metal-Vacuum BoundaryMetal-Semiconductor Contact (Schottky Barrier)Semiconductor pn JunctionsSemiconductor HeterojunctionsSuper Schottky Junction Readership: Solid state physicists and device engineers. Keywords:Esaki-Integral Representation;Josephson Effect;Quantum Mechanical Tunnelling;Tunnelling Theory;Rectangular Barrier Systems;Triangular Barrier SystemsReview: “This text will become an eyeopener to most of the teachers, mainly to those in universities, in understanding the essential contribution of the new tunnel effect and in explaining it so as to be clearly appreciated by the average student.” B S V Gopalam Indian Journal of Pure & Applied Physics, 1987