Spin Effects in Quantum Dots
Author | : Pasquale Onorato |
Publisher | : |
Total Pages | : 0 |
Release | : 2002 |
Genre | : |
ISBN | : |
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Author | : Pasquale Onorato |
Publisher | : |
Total Pages | : 0 |
Release | : 2002 |
Genre | : |
ISBN | : |
Author | : Oliver Gywat |
Publisher | : John Wiley & Sons |
Total Pages | : 219 |
Release | : 2009-11-13 |
Genre | : Technology & Engineering |
ISBN | : 3527628991 |
Filling a gap in the literature, this up-to-date introduction to the field provides an overview of current experimental techniques, basic theoretical concepts, and sample fabrication methods. Following an introduction, this monograph deals with optically active quantum dots and their integration into electro-optical devices, before looking at the theory of quantum confined states and quantum dots interacting with the radiation field. Final chapters cover spin-spin interaction in quantum dots as well as spin and charge states, showing how to use single spins for break-through quantum computation. A conclusion and outlook round off the volume. The result is a primer providing the essential basic knowledge necessary for young researchers entering the field, as well as semiconductor and theoretical physicists, PhD students in physics and material sciences, electrical engineers and materials scientists.
Author | : Lucjan Jacak |
Publisher | : Springer Science & Business Media |
Total Pages | : 176 |
Release | : 2013-06-29 |
Genre | : Technology & Engineering |
ISBN | : 3642720021 |
We present an overview of the theoretical background and experimental re sults in the rapidly developing field of semiconductor quantum dots - systems 8 6 of dimensions as small as 10- -10- m (quasi-zero-dimensional) that contain a small and controllable number (1-1000) of electrons. The electronic structure of quantum dots, including the energy quan tization of the single-particle states (due to spatial confinement) and the evolution of these (Fock-Darwin) states in an increasing external magnetic field, is described. The properties of many-electron systems confined in a dot are also studied. This includes the separation of the center-of-mass mo tion for the parabolic confining potential (and hence the insensitivity of the transitions under far infrared radiation to the Coulomb interactions and the number of particles - the generalized Kohn theorem) and the effects due to Coulomb interactions (formation of the incompressible magic states at high magnetic fields and their relation to composite jermions), and finally the spin-orbit interactions. In addition, the excitonic properties of quantum dots are discussed, including the energy levels and the spectral function of a single exciton, the relaxation of confined carriers, the metastable states and their effect on the photoluminescence spectrum, the interaction of an exciton with carriers, and exciton condensation. The theoretical part of this work, which is based largely on original re sults obtained by the authors, has been supplemented with descriptions of various methods of creating quantum-dot structures.
Author | : Alessandro Braggio |
Publisher | : |
Total Pages | : 96 |
Release | : 2003 |
Genre | : |
ISBN | : |
Author | : Florian Klotz |
Publisher | : |
Total Pages | : 198 |
Release | : 2012 |
Genre | : |
ISBN | : 9783941650480 |
Author | : Putz, Mihai V. |
Publisher | : IGI Global |
Total Pages | : 794 |
Release | : 2016-08-01 |
Genre | : Technology & Engineering |
ISBN | : 1522504931 |
Global economic demands and population surges have led to dwindling resources and problematic environmental issues. As the climate and its natural resources continue to struggle, it has become necessary to research and employ new forms of sustainable technology to help meet the growing demand. Sustainable Nanosystems Development, Properties, and Applications features emergent research and theoretical concepts in the areas of nanotechnology, photovoltaics, electrochemistry, and materials science, as well as within the physical and environmental sciences. Highlighting progressive approaches and utilization techniques, this publication is a critical reference source for researchers, engineers, students, scientists, and academicians interested in the application of sustainable nanotechnology.
Author | : F. Meier |
Publisher | : Elsevier |
Total Pages | : 536 |
Release | : 2012-12-02 |
Genre | : Science |
ISBN | : 0444599916 |
This book comprises the first systematic exposition of various physical aspects of the orientation of electron and nuclear spins in semiconductors by optical means.
Author | : Swati Ramanathan |
Publisher | : |
Total Pages | : |
Release | : 2012 |
Genre | : Exciton theory |
ISBN | : |
Author | : Pascal Stadler |
Publisher | : |
Total Pages | : |
Release | : 2016 |
Genre | : |
ISBN | : |
Author | : Ladislaus B nyai |
Publisher | : World Scientific |
Total Pages | : 264 |
Release | : 1993 |
Genre | : Technology & Engineering |
ISBN | : 9789810213909 |
Semiconductor Quantum Dots presents an overview of the background and recent developments in the rapidly growing field of ultrasmall semiconductor microcrystallites, in which the carrier confinement is sufficiently strong to allow only quantized states of the electrons and holes. The main emphasis of this book is the theoretical analysis of the confinement induced modifications of the optical and electronic properties of quantum dots in comparison with extended materials. The book develops the theoretical background material for the analysis of carrier quantum-confinement effects, introduces the different confinement regimes for relative or center-of-mass motion quantization of the electron-hole-pairs, and gives an overview of the best approximation schemes for each regime. A detailed discussion of the carrier states in quantum dots is presented and surface polarization instabilities are analyzed, leading to the self-trapping of carriers near the surface of the dots. The influence of spin-orbit coupling on the quantum-confined carrier states is discussed. The linear and nonlinear optical properties of small and large quantum dots are studied in detail and the influence of the quantum-dot size distribution in many realistic samples is outlined. Phonons in quantum dots as well as the influence of external electric or magnetic fields are also discussed. Last but not least the recent developments dealing with regular systems of quantum dots are also reviewed. All things included, this is an important piece of work on semiconductor quantum dots not to be dismissed by serious researchers and physicists.