The Difference Electron Nanoscope - Methods and Applications
by Werner Lottermoser (University of Salzburg, Austria)
Hardback 253 pages 2017-05-31 Print ISBN: 9789814774017 eBook ISBN: 9781315196640 DOI: 10.4032/9781315196640
List price : $149.95
“A basic understanding of the distribution of electrons in materials is a fundamental requirement for determining their potential applications. Werner Lottermoser has joined diffractometric and spectroscopic data in a powerful system named difference electron nanoscope (DEN) combining the computer and sophisticated software. Precise data from X-ray synchrotron or magnetic neutron diffraction produce a detailed three-dimensional electron distribution and the electric field gradient (efg) tensor with high accuracy. The efg may be experimentally derived by Mössbauer spectroscopy and nuclear quadrupole resonance. The book is well written, and spectroscopic and diffraction methods are explained in detail. Single-crystal data from fayalite (Fe2SiO4) serve to demonstrate the common synergetic effects of the combined results.”
Prof. Hartmut Fuess - Technische Universität Darmstadt, Germany
This book deals with the difference electron nanoscope (DEN), whose principles have been invented and realised by the book author. DEN is a software program that displays 3D difference electron hyperareas floating in space and the relevant efg as a wire frame model within the unit cell of the sample involved. For the first time, diffractometry and spectroscopy have been joined to common synergetic effects that may contribute to a better understanding of electric and magnetic interactions in a crystal. The monograph contribute to a wide distribution of the method in the scientific world.
This book deals with the difference electron nanoscope (DEN), whose principles have been invented by the book author. However, the DEN is no machine, as the title of the book might infer. It is a computer program running on a fast computer system displaying 3D difference electron hyperareas floating in space and the relevant efg as a wire frame model within the unit cell of the sample involved. In this sense, it acts on a sub-nanometer scale (hence the term “nanoscope”) and generates images of uncompared symmetrical and physical evidence—and beauty.
For the first time, diffractometry and spectroscopy have been integrated for common synergetic effects that may contribute to a better understanding of electric and magnetic interactions in crystals. The experimental derivation of the common quantity, the efg, is not confined to iron-containing samples, as the use of Mössbauer spectroscopy might infer, but can also be determined by nuclear quadrupole resonance that is not confined to special nuclides. Hence, the DEN can be applied to a huge multitude of scientifically interesting specimens since the main method involved, diffractometry in a wide sense, has no general limitations at all. So it is a rather universal method, and the monograph might contribute to a wide distribution of the method in the scientific world. Has anyone seen a real orbital before: a real orbital distribution in a crystal unit cell together with its efg tensor ellipsoid? In this book, one can see it.
About the Author
Werner Lottermoser completed his thesis on neutron diffraction and magnetism of special silicates from Frankfurt University, Germany, and university lecturing qualification on single-crystal Mössbauer spectroscopy from Salzburg University, Austria. Currently, he is working on sub-nanometric imaging, nanomaterials, and materials for industrial applications. Dr. Lottermoser has published more than 65 papers in reputed journals and 150 abstracts, has served as a referee board member of the Journal of Physical Chemistry B in 2006, was awarded the Austrian State Prize for Innovation together with AB-Microelectronics Ltd., Salzburg, in 2015, and holds an honorary doctorate.
The book will be useful for graduate students of condensed matter physics, computational physics, spectroscopy and other analytical techniques, nanomaterials and nanostructures, electron states in nanoscale systems, mathematical modeling, and software engineering.
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