Hybrid Phonons in Nanostructures
Hybrid Phonons in Nanostructures

Author: Brian K. Ridley

Publisher: Oxford University Press

Published: 2017-03-09

Total Pages: 160

ISBN-13: 0191092584

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The book provides a technical account of the basic physics of nanostructures, which are the foundation of the hardware found in all manner of computers. It will be of interest to semiconductor physicists and electronic engineers and advanced research students. Crystalline nanostructures have special properties associated with electrons and lattice vibrations and their interaction. The result of spatial confinement of electrons is indicated in the nomenclature of nanostructures: quantum wells, quantum wires, quantum dots. Confinement also has a profound effect on lattice vibrations. The documentation of the confinement of acoustic modes goes back to Lord Rayleigh's work in the late nineteenth century, but no such documentation exists for optical modes. It is only comparatively recently that any theory of the elastic properties of optical modes exists, and a comprehensive account is given in this book. A model of the lattice dynamics of the diamond lattice is given that reveals the quantitative distinction between acoustic and optical modes and the difference of connection rules that must apply at an interface. The presence of interfaces in nanostructures forces the hybridization of longitudinally and transversely polarized modes, along with, in polar material, electromagnetic modes. Hybrid acoustic and optical modes are described, with an emphasis on polar-optical phonons and their interaction with electrons. Scattering rates in single heterostructures, quantum wells and quantum wires are described and the anharmonic interaction in quantum dots discussed. A description is given of the effects of dynamic screening of hybrid polar modes and the production of hot phonons.

Hybrid Phonons in Nanostructures
Hybrid Phonons in Nanostructures

Author: B. K. Ridley

Publisher: Oxford University Press

Published: 2017

Total Pages: 205

ISBN-13: 0198788363

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The book provides a technical account of the basic physics of nanostructures, which are the foundation of the hardware found in all manner of computers. It will be of interest to semiconductor physicists and electronic engineers and advanced research students. Crystalline nanostructures have special properties associated with electrons and lattice vibrations and their interaction. The result of spatial confinement of electrons is indicated in the nomenclature of nanostructures: quantum wells, quantum wires, quantum dots. Confinement also has a profound effect on lattice vibrations. The documentation of the confinement of acoustic modes goes back to Lord Rayleigh's work in the late nineteenth century, but no such documentation exists for optical modes. It is only comparatively recently that any theory of the elastic properties of optical modes exists, and a comprehensive account is given in this book. A model of the lattice dynamics of the diamond lattice is given that reveals the quantitative distinction between acoustic and optical modes and the difference of connection rules that must apply at an interface. The presence of interfaces in nanostructures forces the hybridization of longitudinally and transversely polarized modes, along with, in polar material, electromagnetic modes. Hybrid acoustic and optical modes are described, with an emphasis on polar-optical phonons and their interaction with electrons. Scattering rates in single heterostructures, quantum wells and quantum wires are described and the anharmonic interaction in quantum dots discussed. A description is given of the effects of dynamic screening of hybrid polar modes and the production of hot phonons.

Phonons in Semiconductor Nanostructures
Phonons in Semiconductor Nanostructures

Author: J.P. Leburton

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 490

ISBN-13: 9401116830

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In the last ten years, the physics and technology of low dimensional structures has experienced a tremendous development. Quantum structures with vertical and lateral confinements are now routinely fabricated with feature sizes below 100 run. While quantization of the electron states in mesoscopic systems has been the subject of intense investigation, the effect of confinement on lattice vibrations and its influence on the electron-phonon interaction and energy dissipation in nanostructures received atten tion only recently. This NATO Advanced Research Workshop on Phonons in Sem iconductor Nanostructures was a forum for discussion on the latest developments in the physics of phonons and their impact on the electronic properties of low-dimensional structures. Our goal was to bring together specialists in lattice dynamics and nanos tructure physics to assess the increasing importance of phonon effects on the physical properties of one-(lD) and zero-dimensional (OD) structures. The Workshop addressed various issues related to phonon physics in III-V, II-VI and IV semiconductor nanostructures. The following topics were successively covered: Models for confined phonons in semiconductor nanostructures, latest experimental observations of confined phonons and electron-phonon interaction in two-dimensional systems, elementary excitations in nanostructures, phonons and optical processes in reduced dimensionality systems, phonon limited transport phenomena, hot electron effects in quasi - ID structures, carrier relaxation and phonon bottleneck in quantum dots.

Phonons in Nanostructures
Phonons in Nanostructures

Author: Michael A. Stroscio

Publisher: Cambridge University Press

Published: 2001-08-23

Total Pages: 290

ISBN-13: 1139430327

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This book focuses on the theory of phonon interactions in nanoscale structures with particular emphasis on modern electronic and optoelectronic devices. The continuing progress in the fabrication of semiconductor nanostructures with lower dimensional features has led to devices with enhanced functionality and even novel devices with new operating principles. The critical role of phonon effects in such semiconductor devices is well known. There is therefore a great need for a greater awareness and understanding of confined phonon effects. A key goal of this book is to describe tractable models of confined phonons and how these are applied to calculations of basic properties and phenomena of semiconductor heterostructures. The level of presentation is appropriate for undergraduate and graduate students in physics and engineering with some background in quantum mechanics and solid state physics or devices. A basic understanding of electromagnetism and classical acoustics is assumed.

Microcavities
Microcavities

Author: Alexey Kavokin

Publisher: Oxford University Press

Published: 2017

Total Pages: 623

ISBN-13: 0198782993

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Both rich fundamental physics of microcavities and their intriguing potential applications are addressed in this work, oriented to undergraduate and postgraduate students as well as to physicists and engineers

Spin Current
Spin Current

Author: Sadamichi Maekawa

Publisher: Oxford University Press

Published: 2017

Total Pages: 541

ISBN-13: 0198787073

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In a new branch of physics and technology, called spin-electronics or spintronics, the flow of electrical charge (usual current) as well as the flow of electron spin, the so-called "spin current", are manipulated and controlled together. This book is intended to provide an introduction and guide to the new physics and applications of spin current.

Negative Differential Resistance and Instabilities in 2-D Semiconductors
Negative Differential Resistance and Instabilities in 2-D Semiconductors

Author: N. Balkan

Publisher: Springer Science & Business Media

Published: 1993

Total Pages: 458

ISBN-13: 9780306444906

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Proceedings of a workshop held in Il Ciocco, Lucca, Italy, September 1992. Papers cover the fundamental properties of hot carrier transport and the associated instabilities and light emission in 2-dimensional semiconductors dealing with both theory and experiment. Material is organized into the foll

Hybrid Nanofillers for Polymer Reinforcement
Hybrid Nanofillers for Polymer Reinforcement

Author: Sabu Thomas

Publisher: Elsevier

Published: 2024-08-12

Total Pages: 609

ISBN-13: 0323991408

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Hybrid Nanofillers for Polymer Reinforcement: Synthesis, Assembly, Characterization, and Applications provides a targeted approach to hybrid nanostructures, enabling the development of these advanced nanomaterials for specific applications. The book begins by reviewing the status of hybrid nanostructures, their current applications, and future opportunities. This is followed by chapters examining synthesis and characterization techniques, as well as interactions within nanohybrid systems. The second part of the book provides detailed chapters each highlighting a particular application area and discussing the preparation of various hybrid nano systems that can potentially be utilized in that area. The last chapters turn towards notable state-of-the-art hybrid nanomaterials and their properties and applications. This book is a valuable resource for researchers and advanced students across polymer science, nanotechnology, rubber technology, chemistry, sustainable materials, and materials engineering, as well as scientists, engineers, and R&D professionals with an interest in hybrid nanostructures or advanced nanomaterials for a industrial application. - Provides synthesis methods, characterization techniques, and structure-property analysis for hybrid nanostructures - Offers in-depth coverage that focuses on specific applications across energy storage, environment, automotive, aerospace, construction and biomedicine - Includes the latest novel areas, such as elastomeric hybrid nano systems, hybrid ceramic polymer nanocomposites, and self-assembled structures