Application of Spin-sensitive Electron Spectroscopies to Investigations of Electronic and Magnetic Properties of Solid Surfaces and Epitaxial Systems. Progress Report, 1 November 1993--31 October 1994 PDF Download
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Languages : en
Pages : 5
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Research during the current grant year has focused on: (1) Measurements of the relative contributions of dipole- and impact-scattering to the energy loss spectrum of electrons backscattered from paramagnetic and ferromagnetic metal surfaces, using Spin-Polarized Electron Energy Loss Spectroscopy (SPEELS). (2) Studies of the mechanisms whereby He(23S), He(21S), and He(23P) atoms are deexcited at Ar and Xe films deposited on metallic surfaces, using Spin-Polarized Metastable (Atom) Deexcitation Spectroscopy (SPMDS). (3) Development of a high-efficiency Mott polarimeter for use in Scanning Electron Microscopy with Polarization Analysis (SEMPA). (4) Development of a low-energy spin-polarized He ion beam for magnetic imaging of surfaces and thin epitaxial films.
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Category :
Languages : en
Pages : 5
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Book Description
Research during the current grant year has focused on: (1) Measurements of the relative contributions of dipole- and impact-scattering to the energy loss spectrum of electrons backscattered from paramagnetic and ferromagnetic metal surfaces, using Spin-Polarized Electron Energy Loss Spectroscopy (SPEELS). (2) Studies of the mechanisms whereby He(23S), He(21S), and He(23P) atoms are deexcited at Ar and Xe films deposited on metallic surfaces, using Spin-Polarized Metastable (Atom) Deexcitation Spectroscopy (SPMDS). (3) Development of a high-efficiency Mott polarimeter for use in Scanning Electron Microscopy with Polarization Analysis (SEMPA). (4) Development of a low-energy spin-polarized He ion beam for magnetic imaging of surfaces and thin epitaxial films.
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Category : Power resources
Languages : en
Pages : 782
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ISBN:
Category : Research
Languages : en
Pages : 1686
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Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
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Category : Science
Languages : en
Pages : 634
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Author: Harry M. Assenheim
Publisher: Springer
ISBN:
Category : Medical
Languages : en
Pages : 220
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Author: Marcin L. Sadowski
Publisher: Springer Science & Business Media
ISBN: 9780792363163
Category : Science
Languages : en
Pages : 470
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Book Description
Optical methods for investigating semiconductors and the theoretical description of optical processes have always been an important part of semiconductor physics. Only the emphasis placed on different materials changes with time. Here, a large number of papers are devoted to quantum dots, presenting the theory, spectroscopic investigation and methods of producing such structures. Another major part of the book reflects the growing interest in diluted semiconductors and II-IV nanosystems in general. There are also discussions of the fascinating field of photonic crystals. `Classical' low dimensional systems, such as GsAs/GaAlAs quantum wells and heterostructures, still make up a significant part of the results presented, and they also serve as model systems for new phenomena. New materials are being sought, and new experimental techniques are coming on stream, in particular the combination of different spectroscopic modalities.
Author: Eric Beaurepaire
Publisher: Springer Science & Business Media
ISBN: 3642044980
Category : Science
Languages : en
Pages : 435
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Book Description
Advances in the synthesis of new materials with often complex, nano-scaled structures require increasingly sophisticated experimental techniques that can probe the electronic states, the atomic magnetic moments and the magnetic microstructures responsible for the properties of these materials. At the same time, progress in synchrotron radiation techniques has ensured that these light sources remain a key tool of investigation, e.g. synchrotron radiation sources of the third generation are able to support magnetic imaging on a sub-micrometer scale. With the Fifth Mittelwihr School on Magnetism and Synchrotron Radiation the tradition of teaching the state-of-the-art on modern research developments continues and is expressed through the present set of extensive lectures provided in this volume. While primarily aimed at postgraduate students and newcomers to the field, this volume will also benefit researchers and lecturers actively working in the field.
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Publisher: Elsevier
ISBN: 0080538312
Category : Science
Languages : en
Pages : 677
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The book is a multi-author survey (in 15 chapters) of the current state of knowledge and recent developments in our understanding of oxide surfaces. The author list includes most of the acknowledged world experts in this field. The material covered includes fundamental theory and experimental studies of the geometrical, vibrational and electronic structure of such surfaces, but with a special emphasis on the chemical properties and associated reactivity. The main focus is on metal oxides but coverage extends from 'simple' rocksalt materials such as MgO through to complex transition metal oxides with different valencies.
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.
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ISBN:
Category : Photoelectron spectroscopy
Languages : en
Pages : 27
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