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Excitons
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Book Synopsis Excitons in Low-Dimensional Semiconductors by : Stephan Glutsch
Download or read book Excitons in Low-Dimensional Semiconductors written by Stephan Glutsch and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: The author develops the effective-mass theory of excitons in low-dimensional semiconductors and describes numerical methods for calculating the optical absorption including Coulomb interaction, geometry, and external fields. The theory is applied to Fano resonances in low-dimensional semiconductors and the Zener breakdown in superlattices. Comparing theoretical results with experiments, the book is essentially self-contained; it is a hands-on approach with detailed derivations, worked examples, illustrative figures, and computer programs. The book is clearly structured and will be valuable as an advanced-level self-study or course book for graduate students, lecturers, and researchers.
Book Synopsis Self-Trapped Excitons by : K.S. Song
Download or read book Self-Trapped Excitons written by K.S. Song and published by Springer Science & Business Media. This book was released on 2013-03-08 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt: Self-Trapped Excitons discusses the structure and evolution of the self-trapped exciton (STE) in a wide range of materials. It includes a comprehensive review of experiments and extensive tables of data. Emphasis is given throughout to the unity of the basic physics underlying various manifestations of self-trapping, with the theory being developed from a localized, atomistic perspective. The topics treated in detail in relation to STE relaxation include spontaneous symmetry breaking, lattice defect formation, radiation damage, and electronic sputtering.
Book Synopsis Theory of Molecular Excitons by : A. Davydov
Download or read book Theory of Molecular Excitons written by A. Davydov and published by Springer. This book was released on 2013-11-11 with total page 319 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Svi︠a︡toslav Anatolʹevich Moskalenko Publisher :Cambridge University Press ISBN 13 :9780521580991 Total Pages :434 pages Book Rating :4.5/5 (89 download)
Book Synopsis Bose-Einstein Condensation of Excitons and Biexcitons by : Svi︠a︡toslav Anatolʹevich Moskalenko
Download or read book Bose-Einstein Condensation of Excitons and Biexcitons written by Svi︠a︡toslav Anatolʹevich Moskalenko and published by Cambridge University Press. This book was released on 2000-02-28 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bose-Einstein condensation of excitons is a unique effect in which the electronic states of a solid can self-organize to acquire quantum phase coherence. The phenomenon is closely linked to Bose-Einstein condensation in other systems such as liquid helium and laser-cooled atomic gases. This is the first book to provide a comprehensive survey of this field, covering theoretical aspects as well as recent experimental work. After setting out the relevant basic physics of excitons, the authors discuss exciton-phonon interactions as well as the behaviour of biexcitons. They cover exciton phase transitions and give particular attention to nonlinear optical effects including the optical Stark effect and chaos in excitonic systems. The thermodynamics of equilibrium, quasi-equilibrium, and nonequilibrium systems are examined in detail. The authors interweave theoretical and experimental results throughout the book, and it will be of great interest to graduate students and researchers in semiconductor and superconductor physics, quantum optics, and atomic physics.
Book Synopsis Excitons and Cooper Pairs by : Monique Combescot
Download or read book Excitons and Cooper Pairs written by Monique Combescot and published by Oxford University Press. This book was released on 2016 with total page 559 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book bridges a gap between two major communities of Condensed Matter Physics, Semiconductors and Superconductors, that have thrived independently. Using an original perspective that the key particles of these materials, excitons and Cooper pairs, are composite bosons, the authors raise fundamental questions of current interest: how does the Pauli exclusion principle wield its power on the fermionic components of bosonic particles at a microscopic level and how this affects their macroscopic physics? What can we learn from Wannier and Frenkel excitons and from Cooper pairs that helps us understand "bosonic condensation" of composite bosons and its difference from Bose-Einstein condensation of elementary bosons? The authors begin with a solid mathematical and physical foundation to derive excitons and Cooper pairs. They further introduce Shiva diagrams as a graphic support to grasp the many-body physics induced by fermion exchange in the absence of fermion-fermion interaction - a novel mechanism not visualized by standard Feynman diagrams. Advanced undergraduate or graduate students in physics with no specific background will benefit from this book. The developed concepts and formalism should also be useful for current research on ultracold atomic gases and exciton-polaritons, and quantum information.
Book Synopsis Resonance Effects of Excitons and Electrons by : Ion Geru
Download or read book Resonance Effects of Excitons and Electrons written by Ion Geru and published by Springer. This book was released on 2013-06-01 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the various types of resonance effects on excitons, biexcitons and the local electronic centers (LEC) in solids, such as paramagnetic and paraelectric resonances on excitons, exciton acoustic resonance at intra- and interband transitions, radio-optical double resonance on excitons, hole-nuclear double resonance on localized biexcitons, ENDOR and acoustic ENDOR on LEC. The criteria for the generation of coherent photons, phonons and magnons by excitons are explained. The interactions of excitons and biexcitons with paramagnetic centers and nuclear spins, the indirect interaction between the PC through a field of excitons as well as the quasienergy spectrum of excitons and spin systems are discussed. It is proved that the interaction of paramagnetic centers with excitons increases the spin relaxation rate of paramagnetic centers in comparison with the case of their interaction with free carriers. The giant magneto-optical effects in semi-magnetic semiconductors are theoretically interpreted. In recent years, a new perspective has been added to these systems and their interactions: They can be used for storing and processing information in the form of quantum bits (qubits), the building blocks of quantum computers. The basics of this emerging technology are explained and examples of demonstration-type quantum computers based on localized spins in solids are discussed.
Book Synopsis Excitons at High Density by : H. Haken
Download or read book Excitons at High Density written by H. Haken and published by Springer. This book was released on 2006-04-11 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bose Einstein Condensation of Excitons and Polaritons by : Sunipa Som
Download or read book Bose Einstein Condensation of Excitons and Polaritons written by Sunipa Som and published by Bentham Science Publishers. This book was released on 2024-02-22 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference book explains the fundamentals of Bose Einstein Condensation (BEC) in excitons and polaritons. It presents five chapters exploring fundamental concepts and recent developments on the subject. Starting with a historical overview of BEC, the book progresses into the origins and behaviors of excitons and polaritons. Chapters also cover the unique thermalization and relaxation kinetics of excitons, and the distinctive features of polaritons, such as lasing, superfluidity, and quantized vortices. The chapters dedicated to BEC in excitons and polaritons detail experimental techniques, theoretical modeling, recent advancements, and practical applications in a simplified way for beginners. This book serves as a resource for researchers, physicists, and students interested in the phenomena of BEC, providing insights into both the theoretical foundations and the practical implications of excitons and polaritons.
Book Synopsis Dynamics of Molecular Excitons by : Seogjoo J. Jang
Download or read book Dynamics of Molecular Excitons written by Seogjoo J. Jang and published by Elsevier. This book was released on 2020-04-25 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dynamics of Molecular Excitons provides a comprehensive, but concise description of major theories on the dynamics of molecular excitons, intended to serve as a self-contained resource on the topic. Designed to help those new to this area gain proficiency in this field, experts will also find the book useful in developing a deeper understanding of the subject. The starting point of the book is the standard microscopic definition of molecular Hamiltonians presented in commonly accepted modern quantum mechanical notations. Major assumptions and approximations involved in constructing Frenkel-type exciton Hamiltonians, which are well established, but are often hidden under arcane notations and approximations of old publications, are presented in detail. This will help quantum chemists understand the major assumptions involved in the definition of commonly used exciton models. Rate theories of exciton dynamics, such as Förster and Dexter theories and their modern generalizations, are presented in a unified and detailed manner. In addition, important aspects that are often neglected, such as local field effect and the role of fluctuating environments, are discussed. Various quantum dynamics methods allowing coherent dynamics of excitons are presented in a systematic manner in the context of quantum master equations or path integral formalisms. The author also provides a detailed theoretical explanation for the major spectroscopic techniques probing exciton dynamics, including modern two-dimensional electronic spectroscopy, with a critical assessment of the implications of these spectroscopic measurements. Finally, the book includes a brief overview of major applications including an explanation of organic photovoltaic materials and natural light harvesting complexes. Covers major theories of exciton dynamics in a consciously concise and easily readable way Bridges the gap between quantum dynamics working with phenomenological exciton Hamiltonian and quantum chemistry construct reliable models amenable for dynamics calculations from ab initio calculations Explores modern nonlinear electronic spectroscopy techniques to probe exciton dynamics, showing how it is applied
Book Synopsis Photosynthetic Excitons by : Leonas Valkunas
Download or read book Photosynthetic Excitons written by Leonas Valkunas and published by World Scientific. This book was released on 2000-06-12 with total page 606 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excitons are considered as the basic concept used by describing the spectral properties of photosynthetic pigment-protein complexes and excitation dynamics in photosynthetic light-harvesting antenna and reaction centers. Following the recently obtained structures of a variety of photosynthetic pigment-protein complexes from plants and bacteria our interest in understanding the relation between structure, function and spectroscopy has strongly increased. These data demonstrate a short interpigment distance (of the order of 1 nm or even smaller) and/or a highly symmetric (ring-like) arrangement of pigment molecules in peripheral light-harvesting complexes of photosynthetic bacteria. Books which were devoted to the exciton problem so far mainly considered the spectral properties of molecular crystals. However, the small size of these pigment aggregates in the pigment-protein complexes as well as the role of the protein, which is responsible for the structural arrangement of the complex, clearly will have a dramatic influence on the pigment spectra and exciton dynamics. All these aspects of the problem are considered in this book. Exciton theory is mainly considered for small molecular aggregates (dimers, ring-like structures etc.). Together with the theoretical description of the classical conceptual approach, which mainly deals with polarization properties of the absorption and fluorescence spectra, the nonlinear femtosecond spectroscopy which is widely used for investigations now is also discussed. A large part of the book demonstrates the excitonic effects in a multitude of photosynthetic pigment-protein complexes and how we can understand these properties on the basis of the exciton concept.
Book Synopsis Quantum Confined Excitons in 2-Dimensional Materials by : Carmen Palacios-Berraquero
Download or read book Quantum Confined Excitons in 2-Dimensional Materials written by Carmen Palacios-Berraquero and published by Springer. This book was released on 2018-11-02 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the first established experimental results of an emergent field: 2-dimensional materials as platforms for quantum technologies, specifically through the optics of quantum-confined excitons. It also provides an extensive review of the literature from a number of disciplines that informed the research, and introduces the materials of focus – 2d Transition Metal Dichalcogenides (2d-TMDs) – in detail, discussing electronic and chemical structure, excitonic behaviour and response to strain. This is followed by a brief overview of quantum information technologies, including concepts such as single-photon sources and quantum networks. The methods chapter addresses quantum optics techniques and 2d-material processing, while the results section shows the development of a method to deterministically create quantum dots (QDs) in the 2d-TMDs, which can trap single-excitons; the fabrication of atomically thin quantum light-emitting diodes to induce all-electrical single-photon emission from the QDs, and lastly, the use of devices to controllably trap single-spins in the QDs –the first step towards their use as optically-addressable matter qubits.
Book Synopsis Time-Resolved Light Scattering from Excitons by : Heinrich Stolz
Download or read book Time-Resolved Light Scattering from Excitons written by Heinrich Stolz and published by Springer. This book was released on 2006-04-11 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt: Time-Resolved Light-Scattering from Excitons investigates exciton states in semiconductors and their relaxation processes by time-resolved light-scattering. The reader will gain both a clear understanding of the theoretical aspects of this method and profound knowledge of the experimental state-of-the-art. The development of quantum-beat spectroscopy for excitons is also discussed.
Author :Vladimir M. Agranovich Publisher :Springer Science & Business Media ISBN 13 :3662024063 Total Pages :454 pages Book Rating :4.6/5 (62 download)
Book Synopsis Crystal Optics with Spatial Dispersion, and Excitons by : Vladimir M. Agranovich
Download or read book Crystal Optics with Spatial Dispersion, and Excitons written by Vladimir M. Agranovich and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spatial dispersion, namely, the dependence of the dielectric-constant tensor on the wave vector (i.e., on the wavelength) at a fixed frequency, is receiving increased attention in electrodynamics and condensed-matter optics, partic ularly in crystal optics. In contrast to frequency dispersion, namely, the frequency dependence of the dielectric constant, spatial dispersion is of interest in optics mainly when it leads to qualitatively new phenomena. One such phenomenon has been weH known for many years; it is the natural optical activity (gyrotropy). But there are other interesting effects due to spatial dispersion, namely, new normal waves near absorption lines, optical anisotropy of cubic crystals, and many others. Crystal optics that takes spatial dispersion into account includes classical crystal optics with frequency dispersion only, as a special case. In our opinion, this fact alone justifies efforts to develop crystal optics with spatial dispersion taken into account, although admittedly its influence is smaH in some cases and it is observable only under rather special conditions. Furthermore, spatial dispersion in crystal optics deserves attention from another point as well, namely, the investigation of excitons that can be excited by light. We contend that crystal optics with spatial dispersion and the theory of excitons are fields that overlap to a great extent, and that it is sometimes quite impossible to separate them. It is our aim to show the true interplay be tween these interrelations and to combine the macroscopic and microscopic approaches to crystal optics with spatial dispersion and exciton theory.
Book Synopsis Optics of Excitons in Confined Systems, Proceedings of the INT Meeting, Italy, 24-27 September 1991 by : Andrea D'Andrea
Download or read book Optics of Excitons in Confined Systems, Proceedings of the INT Meeting, Italy, 24-27 September 1991 written by Andrea D'Andrea and published by CRC Press. This book was released on 1992-03-26 with total page 380 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optics of Excitons in Confined Systems provides an overview of research in semiconductors that exhibit resonance enhanced optical nonlinearities in the frequency range close to the valence-conduction band gap. The book is divided into the following sections: quantum wells, wires, and dots; superlattices; nonlinear optical properties of confined systems; and effects of external fields on confined systems. Topics range from fundamental theory to more applied aspects of excitons in confined sytems.
Download or read book Excitons written by K. Cho and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Cho, K.: Introduction. - Cho, K.: Internal Structure of Excitons. - Dean, P. J. /A¬01Herbert, D. C.A¬02: Bound Excitons in A¬Semiconductors. - Fischer, B. /Lagois, J.: Surface Exciton Polaritons. - Yu, P. Y.: Study of Excitons and Exciton-Phonon Interactions by Resonant Raman and Brillouin Spectroscopies.
Book Synopsis Excitons, Magnons and Phonons in Molecular Crystals by : A. B. Zahlan
Download or read book Excitons, Magnons and Phonons in Molecular Crystals written by A. B. Zahlan and published by CUP Archive. This book was released on 1968-11-02 with total page 250 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Excitons written by Donald C. Reynolds and published by Elsevier. This book was released on 2012-12-02 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excitons: Their Properties and Uses presents the fundamental properties of excitons and emphasizes the extensive use of excitons as a tool in understanding the properties of materials. This book explores the basic and technological importance of the physical parameters of materials. Organized into eight chapters, this text starts with a discussion on the theoretical aspects of excitons, and then explores the high-density exciton systems in which the interaction between the constituents is important. Other chapters discuss the experimental observations of exciton phenomena with proper theoretical interpretation of the data. The reader is then introduced to the interactions of excitons with other systems. The final chapter examines the experimental techniques used in the study of excitons and the importance of excitons in materials technology. This book is a valuable resource for scientists and researchers working with semiconductors and other areas of materials technology. Second-year graduate students of solid-state physics will find this book extremely useful.
