Diluted Magnetic Semimagnetic Semiconductors
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Semimagnetic Semiconductors And Diluted Magnetic Semiconductors
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Author : M. Averous
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Semimagnetic Semiconductors And Diluted Magnetic Semiconductors written by M. Averous and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
Semimagnetic semiconductors (SMSC) and diluted magnetic semiconductors (DMS) have in the past decade attracted considerable attention because they confer many new physical properties on both bulk materials and heterostructures. These new effects are due either to exchange interactions between magnetic moments on magnetic ions, or to exchange interactions between magnetic moments and the spin of the charge carrier. These effects vary with the transition metal (Mn, Fe, Co) or rare earth (Eu, Gd, etc) used and thus provide a range of different situations. The field is very large (zero gap, small gap, wide gap), and the magnetic properties also are very rich (paramagnetic spin glass, antiferromagnetism). These materials are very convenient for studying the magnetism (the magnetism is diluted) or the superlattices (SL) with a continuous change from type II SL to type III SL. This Course attempted to provide a complete overview of the topic. The participants of this summer school held in Erice came from ten countries and were from various backgrounds and included theoreticians, experimentalists, physicists, and chemists. Consequently, an attempt was made to make the Course as thorough as possible, but at the same time attention was devoted to basic principles. The lecturers, drawn from all the groups in the world involved in the field, were asked to be very didactic in their presentation. After two introductory lectures, Dr.
Diluted Magnetic Semimagnetic Semiconductors Materials Research Society Smposia Proceedings
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Author :
language : en
Publisher:
Release Date : 1987
Diluted Magnetic Semimagnetic Semiconductors Materials Research Society Smposia Proceedings written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with categories.
A three-day symposium on "Diluted Magnetic (Semimagnetic) Semiconductors" was held as part of the Fall Meeting of the Materials Research Society in Boston, MA, December 1-3, 1986. Two of the six sessions of this symposium were held jointly with the symposium on Materials for Infrared Detectors and Sources. This was the first symposium on semimagnetic semiconductors held in the United States, indicating the growing interest in this field among U.S. scientists. The symposium included participants from Austria, Canada, Finland, France, Germany, The Netherlands, Poland, and the United States. Approximately 50 papers were presented, with two-thirds given by U.S. scientists. Topics included: optical properties and spin-spin exchange interactions; magnetic properties of Mn-alloyed II-VI compounds; theory, structure, and transport; lead salts, Fe alloys, new DMS materials; frontiers of materials science in IR/DMS materials; and lR/DMS materials for IR detectors and sources. jg p.14.
Diluted Magnetic Semimagnetic Semiconductors
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Author : Roshan Lal Aggarwal
language : en
Publisher:
Release Date : 1987
Diluted Magnetic Semimagnetic Semiconductors written by Roshan Lal Aggarwal and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Technology & Engineering categories.
Diluted Magnetic Semiconductors
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Author : Mukesh Kumar Jain
language : en
Publisher: World Scientific
Release Date : 1991
Diluted Magnetic Semiconductors written by Mukesh Kumar Jain and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Technology & Engineering categories.
This review volume presents both basic and applied aspects of diluted magnetic semiconductors (DMS). The term DMS applies generally to semiconductors in which a fraction of its constituent ions are replaced by magnetic ions. This book is only the second to review DMS materials. It presents a detailed treatment of the current state of knowledge of the established properties of DMS in the form of single crystals, quantum wells and superlattices. It also brings together recent work on new DMS materials and presents discussions on a wide range of possible DMS applications.
Diluted Magnetic Semiconductors
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Author : Mukesh Jain
language : en
Publisher: World Scientific
Release Date : 1991-10-31
Diluted Magnetic Semiconductors written by Mukesh Jain and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991-10-31 with Science categories.
This review volume presents both basic and applied aspects of diluted magnetic semiconductors (DMS). The term DMS applies generally to semiconductors in which a fraction of its constituent ions are replaced by magnetic ions. This book is only the second to review DMS materials. It presents a detailed treatment of the current state of knowledge of the established properties of DMS in the form of single crystals, quantum wells and superlattices. It also brings together recent work on new DMS materials and presents discussions on a wide range of possible DMS applications.
Ii Vi Compounds And Semimagnetic Semiconductors
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Author : H. Heinrich
language : en
Publisher: Trans Tech Publications Ltd
Release Date : 1995-02-09
Ii Vi Compounds And Semimagnetic Semiconductors written by H. Heinrich and has been published by Trans Tech Publications Ltd this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995-02-09 with Technology & Engineering categories.
The main emphasis of this volume is on the fundamental physics of the II-VI compounds focusing on the properties of epitaxial layers, heterostructures, multilayers and superlattices.
Magnetization Dynamics In Diluted Magnetic Semiconductor Heterostructures
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Author : Martin Kneip
language : en
Publisher: GRIN Verlag
Release Date : 2009-02-17
Magnetization Dynamics In Diluted Magnetic Semiconductor Heterostructures written by Martin Kneip and has been published by GRIN Verlag this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-02-17 with Science categories.
Doctoral Thesis / Dissertation from the year 2008 in the subject Physics - Theoretical Physics, grade: sehr gut (1,0), University of Dortmund, language: English, abstract: In this thesis spin dynamics in (Zn,Mn)Se/(Zn,Be)Se and (Cd,Mn)Te/(Cd,Mg)Te DMS quantum well heterostructures with a type-I band alignment are studied, where the carriers are quantum confined. Especially the important role of free carriers in heating of the Mn-system, by its interaction with photoexcited carriers with excess kinetic energy, and in the cooling of the Mn-system in the presence of cold background carriers, provided by modulation doping, is established. The studies are separated in three chapters. In the fourth chapter of this thesis, new results on energy and spin transfer between free carriers and Mn-ion system are presented. Contributions of direct heating of the Mn-system by photocarriers and indirect heating via nonequilibrium phonons are distinguished and their competition is discussed. In the fifth chapter dynamics of spin-lattice relaxation of magnetic Mn-ions in DMS QW heterostructures is investigated and new experimental studies on (Zn,Mn)Se/(Zn,Be)Se heterostructures are shown. Crucial for spintronic devices is the ability to tune the spin relaxation time precisely, as the spin relaxation time is important in double respects. On the one hand spin polarization must be conserved over long times and distances, if the spin shall be processed or stored in a region, which is spatial separated from the spin-injector. Especially for the possibility of utilizing spins as quantum bits for quantum information processing, long spin polarization is needed. On the other hand short spin relaxation time is needed for fast switching between different spin-states. For instance semiconductor lasers can be switched off extremely fast by reorientation of spin. This very relevant topic is devoted the sixth chapter, before the thesis is summarized in the last chapter. Especially for one of the biggest drawbacks for precise tuning, that the magnetization dynamics in DMS cannot be controlled separately from the static magnetization, solutions via electric field control of the magnetization dynamics or via the technological concept of “digital alloying” are presented.precise tuning, that the magnetization dynamics in DMS cannot be controlled separately from the static magnetization, solutions via electric field control of the magnetization dynamics or via the technological concept of “digital alloying” are presented.
Introduction To The Physics Of Diluted Magnetic Semiconductors
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Author : Jan A. Gaj
language : en
Publisher: Springer Science & Business Media
Release Date : 2011-01-12
Introduction To The Physics Of Diluted Magnetic Semiconductors written by Jan A. Gaj and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-01-12 with Science categories.
As materials whose semiconducting properties are influenced by magnetic ions, DMSs are central to the emerging field of spintronics. This volume focuses both on basic physical mechanisms (e.g. carrier-ion and ion-ion interactions), and resulting phenomena.
Origin Of Magnetism In Oxide Based Diluted Magnetic Semiconductors
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Author : Numan Akdogan
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2014-07-23
Origin Of Magnetism In Oxide Based Diluted Magnetic Semiconductors written by Numan Akdogan and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-07-23 with categories.
Spintronics, short notation for spin-based electronics, is a research area which seeks to exploit the spin of electrons in addition to their charge in semiconductors. The basic idea is to combine the characteristics of existing magnetic devices with semiconductor devices in order to realize a new generation of devices that are much smaller, more energy efficient, non-volatile, and much faster than presently available. The key requirement in the development of such devices is an efficient injection, transfer and detection of spin-polarized current from a ferromagnetic material into a semiconductor. Due to the well known problem of a resistance mismatch at metal/semiconductor interfaces, hindering an effective spin injection, much interest is concentrated on the development of room-temperature ferromagnetic semiconductors. The aim of this book is to shed some light on the origin of room temperature ferromagnetism in oxide-based DMS materials whether it originates from clusters or from uniformly distributed magnetic atoms.
Growth And Characterization Of Diluted Magnetic Semiconductors
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Author : Dwight D. Hunter
language : en
Publisher:
Release Date : 2005
Growth And Characterization Of Diluted Magnetic Semiconductors written by Dwight D. Hunter and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Diluted magnetic semiconductors categories.