Optical time resolved spin dynamics in III-V semiconductor quantum wells

Optical time resolved spin dynamics in III-V semiconductor quantum wells PDF Author: Matthew Anthony Brand
Publisher:
ISBN:
Category :
Languages : en
Pages : 148

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Book Description

Optical time resolved spin dynamics in III-V semiconductor quantum wells

Optical time resolved spin dynamics in III-V semiconductor quantum wells PDF Author: Matthew Anthony Brand
Publisher:
ISBN:
Category :
Languages : en
Pages : 148

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Book Description


Spin Physics in Semiconductors

Spin Physics in Semiconductors PDF Author: Mikhail I. Dyakonov
Publisher: Springer Science & Business Media
ISBN: 3540788204
Category : Science
Languages : en
Pages : 451

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Book Description
The purpose of this collective book is to present a non-exhaustive survey of sp- related phenomena in semiconductors with a focus on recent research. In some sense it may be regarded as an updated version of theOpticalOrientation book, which was entirely devoted to spin physics in bulk semiconductors. During the 24 years that have elapsed, we have witnessed, on the one hand, an extraordinary development in the wonderful semiconductor physics in two dim- sions with the accompanying revolutionary applications. On the other hand, during the last maybe 15 years there was a strong revival in the interest in spin phen- ena, in particular in low-dimensional semiconductor structures. While in the 1970s and 1980s the entire world population of researchers in the ?eld never exceeded 20 persons, now it can be counted by the hundreds and the number of publications by the thousands. This explosive growth is stimulated, to a large extent, by the hopes that the electron and/or nuclear spins in a semiconductor will help to accomplish the dream of factorizing large numbers by quantum computing and eventually to develop a new spin-based electronics, or “spintronics”. Whether any of this will happen or not, still remains to be seen. Anyway, these ideas have resulted in a large body of interesting and exciting research, which is a good thing by itself. The ?eld of spin physics in semiconductors is extremely rich and interesting with many spectacular effects in optics and transport.

Ultrafast Dynamics of Quantum Systems

Ultrafast Dynamics of Quantum Systems PDF Author: Baldassare di Bartolo
Publisher: Springer Science & Business Media
ISBN: 0306470802
Category : Science
Languages : en
Pages : 721

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Book Description
Based on a NATO Advanced Summer Institute, this volume discusses physical models, mathematical formalisms, experimental techniques, and applications for ultrafast dynamics of quantum systems. These systems are used in laser optics, spectroscopy, and utilize monochromaticity, spectral brightness, coherence, power density, and tunability of laser sources.

Non-Equilibrium Dynamics of Semiconductors and Nanostructures

Non-Equilibrium Dynamics of Semiconductors and Nanostructures PDF Author: Kong-Thon Tsen
Publisher: CRC Press
ISBN: 1351836927
Category : Technology & Engineering
Languages : en
Pages : 241

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Book Description
The advent of the femto-second laser has enabled us to observe phenomena at the atomic timescale. One area to reap enormous benefits from this ability is ultrafast dynamics. Collecting the works of leading experts from around the globe, Non-Equilibrium Dynamics of Semiconductors and Nanostructures surveys recent developments in a variety of areas in ultrafast dynamics. In eight authoritative chapters illustrated by more than 150 figures, this book spans a broad range of new techniques and advances. It begins with a review of spin dynamics in a high-mobility two-dimensional electron gas, followed by the generation, propagation, and nonlinear properties of high-amplitude, ultrashort strain solitons in solids. The discussion then turns to nonlinear optical properties of nanoscale artificial dielectrics, optical properties of GaN self-assembled quantum dots, and optical studies of carrier dynamics and non-equilibrium optical phonons in nitride-based semiconductors. Rounding out the presentation, the book examines ultrafast non-equilibrium electron dynamics in metal nanoparticles, monochromatic acoustic phonons in GaAs, and electromagnetically induced transparency in semiconductor quantum wells. With its pedagogical approach and practical, up-to-date coverage, Non-Equilibrium Dynamics of Semiconductors and Nanostructures allows you to easily put the material into practice, whether you are a seasoned researcher or new to the field.

Time-resolved Studies of Electron and Hole Spin Dynamics in Modulation-doped GaAs/AlGaAs Quantum Wells

Time-resolved Studies of Electron and Hole Spin Dynamics in Modulation-doped GaAs/AlGaAs Quantum Wells PDF Author: Tobias Korn
Publisher:
ISBN:
Category :
Languages : en
Pages : 30

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Book Description


Spin Electronics

Spin Electronics PDF Author: David D. Awschalom
Publisher: Springer Science & Business Media
ISBN: 9401705321
Category : Science
Languages : en
Pages : 216

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Book Description
The history of scientific research and technological development is replete with examples of breakthroughs that have advanced the frontiers of knowledge, but seldom does it record events that constitute paradigm shifts in broad areas of intellectual pursuit. One notable exception, however, is that of spin electronics (also called spintronics, magnetoelectronics or magnetronics), wherein information is carried by electron spin in addition to, or in place of, electron charge. It is now well established in scientific and engineering communities that Moore's Law, having been an excellent predictor of integrated circuit density and computer performance since the 1970s, now faces great challenges as the scale of electronic devices has been reduced to the level where quantum effects become significant factors in device operation. Electron spin is one such effect that offers the opportunity to continue the gains predicted by Moore's Law, by taking advantage of the confluence of magnetics and semiconductor electronics in the newly emerging discipline of spin electronics. From a fundamental viewpoine, spin-polarization transport in a material occurs when there is an imbalance of spin populations at the Fermi energy. In ferromagnetic metals this imbalance results from a shift in the energy states available to spin-up and spin-down electrons. In practical applications, a ferromagnetic metal may be used as a source of spin-polarized electronics to be injected into a semiconductor, a superconductor or a normal metal, or to tunnel through an insulating barrier.

Spin Physics in Semiconductors

Spin Physics in Semiconductors PDF Author: Mikhail I. Dyakonov
Publisher: Springer
ISBN: 9783642097621
Category : Science
Languages : en
Pages : 0

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Book Description
The purpose of this collective book is to present a non-exhaustive survey of sp- related phenomena in semiconductors with a focus on recent research. In some sense it may be regarded as an updated version of theOpticalOrientation book, which was entirely devoted to spin physics in bulk semiconductors. During the 24 years that have elapsed, we have witnessed, on the one hand, an extraordinary development in the wonderful semiconductor physics in two dim- sions with the accompanying revolutionary applications. On the other hand, during the last maybe 15 years there was a strong revival in the interest in spin phen- ena, in particular in low-dimensional semiconductor structures. While in the 1970s and 1980s the entire world population of researchers in the ?eld never exceeded 20 persons, now it can be counted by the hundreds and the number of publications by the thousands. This explosive growth is stimulated, to a large extent, by the hopes that the electron and/or nuclear spins in a semiconductor will help to accomplish the dream of factorizing large numbers by quantum computing and eventually to develop a new spin-based electronics, or “spintronics”. Whether any of this will happen or not, still remains to be seen. Anyway, these ideas have resulted in a large body of interesting and exciting research, which is a good thing by itself. The ?eld of spin physics in semiconductors is extremely rich and interesting with many spectacular effects in optics and transport.

Spin Physics in Semiconductors

Spin Physics in Semiconductors PDF Author: Mikhail I. Dyakonov
Publisher: Springer
ISBN: 3319654365
Category : Technology & Engineering
Languages : en
Pages : 546

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Book Description
This book offers an extensive introduction to the extremely rich and intriguing field of spin-related phenomena in semiconductors. In this second edition, all chapters have been updated to include the latest experimental and theoretical research. Furthermore, it covers the entire field: bulk semiconductors, two-dimensional semiconductor structures, quantum dots, optical and electric effects, spin-related effects, electron-nuclei spin interactions, Spin Hall effect, spin torques, etc. Thanks to its self-contained style, the book is ideally suited for graduate students and researchers new to the field.

Electron and Nuclear Spin Dynamics in Semiconductor Nanostructures

Electron and Nuclear Spin Dynamics in Semiconductor Nanostructures PDF Author: M. M. Glazov
Publisher:
ISBN: 0198807309
Category : Science
Languages : en
Pages : 294

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Book Description
This book focuses on the main aspects of electron and nuclear spin dynamics in semiconductor nanostructures. It summarizes main results of theoretical and experimental studies of interactions in spin systems, effects of ultrafast spin manipulation by light, phenomena of spin losses, and the physics of the omnipresent spin noise.

Electrical Control of the Electron Spin Dynamics in [111]-oriented GaAs/AGaAs Quantum Wells

Electrical Control of the Electron Spin Dynamics in [111]-oriented GaAs/AGaAs Quantum Wells PDF Author: Quang ha Duong
Publisher:
ISBN:
Category :
Languages : en
Pages : 125

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Book Description
We have studied the electron spin dynamics in 111-oriented GaAs/AlGaAs quantum wells grown on 111-substrate by time-resolved photoluminescence spectroscopy. By applying an external electric field about 50 kV/cm along growth direction, we observed the spectacular increase of electron spin which can attain values greater than 30 ns. This phenomenon comes from the electrical control of spin-orbit interaction in conduction band that make the Rashba term compensate exactly with the Dresselhaus term. The cancellation effect of these two terms results in the suppression of electron spin relaxation induced by D'yakonov-Perelmechanism which is dominant in undoped quantum wells and at the temperatures greater than 50K. The measurement under an external transverse magnetic field (Voigt configuration) demonstrates that the spin relaxation times in three spatial directions are also controlled simultaneously by electric field. The "total" control of electron spin relaxation can only be observed in 111-oriented quantum wells. Finally, we also develop the model to interpret the experimental measurement of spin relaxation anisotropy depending on electric field in 111-oriented quantum wells.