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Quantum Tunnelling in Condensed Media

Quantum Tunnelling in Condensed Media
Author: Yu. Kagan
Publisher: Elsevier
Total Pages: 516
Release: 2012-12-02
Genre: Science
ISBN: 0444600477

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The essays in this book deal with of the problem of quantum tunnelling and related behavior of a microscopic or macroscopic system, which interacts strongly with an "environment" - this being some form of condensed matter. The "system" in question need not be physically distinct from its environment, but could, for example, be one particular degree of freedom on which attention is focussed, as in the case of the Josephson junction studied in several of the papers. This general problem has been studied in many hundreds, if not thousands, of articles in the literature, in contexts as diverse as biophysics and quantum cosmology. The editors have grouped together papers which are representative of the main trends in this area in the last fifteen years or so and sufficiently related in general spirit and terminology that common themes can be discerned. The contributions are primarily theoretical, but the comparison with experiment is discussed wherever possible.


Quantum Tunneling in Complex Systems

Quantum Tunneling in Complex Systems
Author: Joachim Ankerhold
Publisher: Springer
Total Pages: 220
Release: 2007-04-20
Genre: Science
ISBN: 3540680764

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In the last two decades remarkable progress has been made in understanding and describing tunneling processes in complex systems in terms of classical trajectories. This book introduces recent concepts and achievements. There is particular emphasis on a dynamical formulation and relations to specific systems in mesoscopic, molecular, atomic and nuclear physics.


Quantum Tunneling And Field Electron Emission Theories

Quantum Tunneling And Field Electron Emission Theories
Author: Shi-dong Liang
Publisher: World Scientific
Total Pages: 408
Release: 2013-11-29
Genre: Science
ISBN: 981444023X

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Quantum tunneling is an essential issue in quantum physics. Especially, the rapid development of nanotechnology in recent years promises a lot of applications in condensed matter physics, surface science and nanodevices, which are growing interests in fundamental issues, computational techniques and potential applications of quantum tunneling.The book involves two relevant topics. One is quantum tunneling theory in condensed matter physics, including the basic concepts and methods, especially for recent developments in mesoscopic physics and computational formulation. The second part is the field electron emission theory, which covers the basic field emission concepts, the Fowler-Nordheim theory, and recent developments of the field emission theory especially in some fundamental concepts and computational formulation, such as quantum confinement effects, Dirac fermion, Luttinger liquid, carbon nanotubes, coherent emission current, quantum tunneling time problem, spin polarized field electron emission and non-equilibrium Green's function method for field electron emission.This book presents in both academic and pedagogical styles, and is as possible as self-complete to make it suitable for researchers and graduate students in condensed matter physics and vacuum nanoelectronics.


Quantum Tunneling of Josephson Vortices in High-Impedance Long Junctions

Quantum Tunneling of Josephson Vortices in High-Impedance Long Junctions
Author: Wildermuth, Matthias Micha
Publisher: KIT Scientific Publishing
Total Pages: 160
Release: 2023-09-11
Genre:
ISBN: 373151303X

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In the last decades, superconducting devices have emerged as a promising platform for quantum technologies, including quantum sensing and quantum computing. Their key elements are Josephson junctions, which allow for coherent supercurrent tunneling between two weakly linked superconductors. If such a junction is extended in one direction to a long junction, the superconducting phase difference can vary in space and time and may allow for quantized phase windings that drive supercurrent vortices.


Macroscopic Quantum Tunneling of the Magnetic Moment

Macroscopic Quantum Tunneling of the Magnetic Moment
Author: Eugene M. Chudnovsky
Publisher: Cambridge University Press
Total Pages: 189
Release: 1998-08-28
Genre: Science
ISBN: 0521474043

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This is the first book presenting a coherent theoretical and experimental treatment of the rapidly developing field of macroscopic quantum tunneling of the magnetic moment. The theory is based on the concept of the magnetic instanton and its renormalization by the dissipative environment. The book includes discussions of the tunneling of magnetic moment in small ferromagnetic grains, tunneling of the Ne'el vector in antiferromagnetic grains, quantum nucleation of magnetic domains, and quantum depinning of domain walls. The experimental part collects the majority of recent data that are, or may be, relevant to spin tunneling. Among the topics described are low temperature magnetic relaxation and its interpretation in various systems, experiments on single particles and mesoscopic wires, and resonant spin tunneling in molecular magnets. This study of an important new field in condensed matter physics by two leading contributors to the subject will be of interest to theorists and experimentalists alike.


Quantum Mechanical Tunneling in Chemical Physics

Quantum Mechanical Tunneling in Chemical Physics
Author: Hiroki Nakamura
Publisher: CRC Press
Total Pages: 225
Release: 2016-04-19
Genre: Science
ISBN: 1466507322

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Quantum mechanical tunneling plays important roles in a wide range of natural sciences, from nuclear and solid-state physics to proton transfer and chemical reactions in chemistry and biology. Responding to the need for further understanding of multidimensional tunneling, the authors have recently developed practical methods that can be applied to


Macroscopic Quantum Tunneling

Macroscopic Quantum Tunneling
Author: Shin Takagi
Publisher: Cambridge University Press
Total Pages: 232
Release: 2002-08-15
Genre: Science
ISBN: 9780521800020

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A coherent and self-contained account of macroscopic quantum phenomena for graduate students and researchers.


Tunneling Phenomena in Solids

Tunneling Phenomena in Solids
Author: Elias Burstein
Publisher: Springer Science & Business Media
Total Pages: 574
Release: 2012-12-06
Genre: Science
ISBN: 1468417525

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The aim of this volume is to provide advanced predoctoral students and young postdoctoral physicists with an opportunity to study the concepts of tunneling phenomena in solids and the theoretical and experimental techniques for their investigation. The contributions are primarily tutorial in nature, covering theoretical and experimental aspects of electron tunnel ing in semiconductors, metals, and superconductors, and atomic tunneling in solids. The work is based upon the lectures delivered at the Advanced Study Institute on "Tunneling Phenomena in Solids," held at the Danish A. E. C. Research Establishment, Riso, Denmark, June 19-30, 1967. Sponsored by the Danish Atomic Energy Commission, the Nordic Institute for Theoretical Physics (NORDITA), and the Science Affairs Division of NATO, with the cooperation of the University of Copenhagen, the Technical University of Denmark, Chalmers Institute of Technology, and the University of Penn sylvania, the lectures were presented by a distinguished panel of scientists who have made major contributions in the field. The relatively large number of lecturers was, in part, made possible by the close coordination of the Advanced Study Institute with the Second International Conference on Electron Tunneling in Solids, which was held at Riso on June 29, 30 and July 1, 1967, under the sponsorship of the U. S. Army Research Office Durham. We are indebted to I. Giaever, E. O. Kane, J. Rowell, and J. R. Schrieffer for advice and assistance in planning the lecture program of the Institute.


An Introduction to Macroscopic Quantum Phenomena and Quantum Dissipation

An Introduction to Macroscopic Quantum Phenomena and Quantum Dissipation
Author: A. O. Caldeira
Publisher: Cambridge University Press
Total Pages: 299
Release: 2014-03-20
Genre: Science
ISBN: 1139867024

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Reviewing macroscopic quantum phenomena and quantum dissipation, from the phenomenology of magnetism and superconductivity to the presentation of alternative models for quantum dissipation, this book develops the basic material necessary to understand the quantum dynamics of macroscopic variables. Macroscopic quantum phenomena are presented through several examples in magnetism and superconductivity, developed from general phenomenological approaches to each area. Dissipation naturally plays an important role in these phenomena, and therefore semi-empirical models for quantum dissipation are introduced and applied to the study of a few important quantum mechanical effects. The book also discusses the relevance of macroscopic quantum phenomena to the control of meso- or nanoscopic devices, particularly those with potential applications in quantum computation or quantum information. It is ideal for graduate students and researchers.


Quantum Mechanical Tunnelling and Its Applications

Quantum Mechanical Tunnelling and Its Applications
Author: D. K. Roy
Publisher: World Scientific Publishing Company Incorporated
Total Pages: 372
Release: 1986
Genre: Science
ISBN: 9789971500245

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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.