Spin-Polarized Two-Electron Spectroscopy of Surfaces
(Sprache: Englisch)
This book presents developments of techniques for detection and analysis of two electrons resulting from the interaction of a single incident electron with a solid surface. Spin dependence in scattering of spin-polarized electrons from magnetic and...
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This book presents developments of techniques for detection and analysis of two electrons resulting from the interaction of a single incident electron with a solid surface. Spin dependence in scattering of spin-polarized electrons from magnetic and non-magnetic surfaces is governed by exchange and spin-orbit effects. The effects of spin and angular electron momentum are shown through symmetry of experimental geometries: (i) normal and off normal electron incidence on a crystal surface, (ii) spin polarization directions within mirror planes of the surface, and (iii) rotation and interchange of detectors with respect to the surface normal. Symmetry considerations establish relationships between the spin asymmetry of two-electron distributions and the spin asymmetry of Spectral Density Function of the sample, hence providing information on the spin-dependent sample electronic structure. Detailed energy and angular distributions of electron pairs carry information on the electron-electron interaction and electron correlation inside the solid. The "exchange - correlation hole" associated with Coulomb and exchange electron correlation in solids can be visualized using spin-polarized two-electron spectroscopy. Also spin entanglement of electron pairs can be probed. A description of correlated electron pairs generation from surfaces using other types of incident particles, such as photons, ions, positrons is also presented. Inhaltsverzeichnis zu „Spin-Polarized Two-Electron Spectroscopy of Surfaces “
Introduction.- Development of a new experimental technique for studying electron-electron interactions, electron correlations in solids, mechanism of electron emission and electronic properties of surfaces.- Spin-polarized (e,2e) spectroscopy of surfaces.- Conclusions.
Autoren-Porträt von Sergey Samarin, Oleg Artamonov, Jim Williams
Sergey Samarin graduated from Leningrad State University in 1972 and completed his PhD studies of "radiative interaction of low-energy electrons with metals" in 1976. Then, as Research Fellow, Senior Research Fellow at the Institute of Physics, Leningrad State University (now St. Petersburg State University), he pursued further aspects of electron interactions with surfaces. From 1981-1984, as Associate Professor at the University of Conakry, Guinea, his accomplishments included fluency in French. After returning to St. Petersburg State University he continued his work on low-energy inverse photoemission from solid surfaces, total current spectroscopy, and plasmon excitation in thin Ag films by electron impact with their subsequent decay via photon emission. This work resulted in his Doctor of Science degree in 1995. From 1991-1992 and 1995-2000 Sergey Samarin enjoyed research as an invited Research Fellow in the group of Professor Kirschner in the Max Planck Institute for Microstructure Physics, Halle, Germany. The development there of low-energy spin-polarized two-electron spectroscopy of solid surfaces in reflection geometry, and its achievements, opened new avenues.
In 2000 he moved to the University of Western Australia, as Research Fellow, Senior Research Fellow, and Research Professor combining his research with undergraduate and graduate teaching. His work was focused mainly on the interaction of spin-polarized low-energy electrons and positrons with solid surfaces for which new instruments were constructed in the Australian Research Council Centre of Excellence for Antimatter and Matter Studies at UWA. Spin-dependent electron scattering dynamics and spin-related electronic properties of magnetic and nonmagnetic surfaces were studied using spin-polarized low-energy single- and two- electron spectroscopies.
The development of quantum metrology included new technology combining quantum
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phenomena and a low energy beam of positrons with electrostatic focusing into a UHV surface analysis system. Recent studies include angular distributions of reemitted positrons from W(100) with over layers of oxygen and LiF as well as reflection and diffraction of low-energy positrons from W(001). He is now Senior Honorary Research Fellow at the Department of Physics of UWA.
Oleg Artamonov graduated from Leningrad State University, Physics Department, in 1959 and began research in the Physics Research Institute, Leningrad State University. In 1968 he presented his PhD thesis concerning the design an electron mirror microscope for visualization of the electrostatic micro-potential of solid surfaces.
His pioneering results on electron-photon emission spectroscopy of metals, obtained during 1971-72 at Southampton University, England, as a Research Fellow, were reported at a session of the Royal Physical Society, London. The method of investigation of unoccupied electron states became known as inverse photoemission spectroscopy.
Ultra-high-vacuum spherical deflector spectrometer was constructed for secondary electron spectroscopy and for electron energy loss spectroscopy under low-energy electron excitation. Pioneering results showed the dominant role of the long range order of the atomic structure of the surface in the formation of the electron excited states. It was also shown that the energy spectrum of secondary electrons was determined by the surface electron structure, especially the unoccupied electron density of states.
Early in the 1980s he suggested coincidence electron spectroscopy as a new method of investigation of the surface electron structure. In collaboration with Prof. J. Kirschner (MPI, Germany) measurements showed for the first time the existence of correlated scattered electrons from a W(100) surface
In 1989 at the Freie Univetsitat Berlin with Prof. G. Kaindl the studies of inverse photoemission flourished.H
Oleg Artamonov graduated from Leningrad State University, Physics Department, in 1959 and began research in the Physics Research Institute, Leningrad State University. In 1968 he presented his PhD thesis concerning the design an electron mirror microscope for visualization of the electrostatic micro-potential of solid surfaces.
His pioneering results on electron-photon emission spectroscopy of metals, obtained during 1971-72 at Southampton University, England, as a Research Fellow, were reported at a session of the Royal Physical Society, London. The method of investigation of unoccupied electron states became known as inverse photoemission spectroscopy.
Ultra-high-vacuum spherical deflector spectrometer was constructed for secondary electron spectroscopy and for electron energy loss spectroscopy under low-energy electron excitation. Pioneering results showed the dominant role of the long range order of the atomic structure of the surface in the formation of the electron excited states. It was also shown that the energy spectrum of secondary electrons was determined by the surface electron structure, especially the unoccupied electron density of states.
Early in the 1980s he suggested coincidence electron spectroscopy as a new method of investigation of the surface electron structure. In collaboration with Prof. J. Kirschner (MPI, Germany) measurements showed for the first time the existence of correlated scattered electrons from a W(100) surface
In 1989 at the Freie Univetsitat Berlin with Prof. G. Kaindl the studies of inverse photoemission flourished.H
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Bibliographische Angaben
- Autoren: Sergey Samarin , Oleg Artamonov , Jim Williams
- 2019, 1st ed. 2018, XI, 232 Seiten, 91 farbige Abbildungen, Masse: 16 x 24,1 cm, Gebunden, Englisch
- Verlag: Springer, Berlin
- ISBN-10: 3030006557
- ISBN-13: 9783030006556
- Erscheinungsdatum: 04.10.2018
Sprache:
Englisch
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