Lecture: Low Energy Electron Microscopy——Past, Present and Future
Prof. Ernst Bauer
Department of Physics, Arizona State University, USA
Abstract: This talk will discuss the evolution of LEEM from the early 1960ies to today and present the speakers expectations for the future. Various instrument designs will be illustrated. Fundamental questions of intensity, resolution and contrast will be addressed. These determine the possibilities and limitations of the method, which will be illustrated by some application examples. While combination of LEEM with mirror electron microscopy (MEM) and UVPEEM is standard, extension of LEEM to other methods such as spin-polarized LEEM, Auger electron emission microscopy (AEEM) and X-ray PEEM (XPEEM) methods will also briefly sketched, time permitting.
General references: E. Bauer,Rep. Prog. Phys. 57 (1994) 895; Surface Microscopy with Low Energy Electrons, Springer 2014.
Professor Ernst Bauer is a distinguished German-American physicist a pioneer in surface physics and inventor of microscopy techniques.
He derived in 1958 the classification of thin film growth mechanisms that provides to this day the theoretical thermodynamic framework used to understand epitaxy. In 1962 he invented Low Energy Electron Microscopy (LEEM), which came to fruition in 1985. In the late eighties/early nineties he extended the LEEM technique in two directions of capital importance by developing Spin-Polarized Low Energy Electron Microscopy (SPLEEM) and Spectroscopic Photo Emission and Low Energy Electron Microscopy (SPELEEM). Using such methods a comprehensive (structural, chemical, magnetic, and electronic) characterization of surfaces and thin films on the 10 nm scale became feasible.
His interest in the development of synchrotron radiation microscopy techniques resulted in the development of the Nanospectroscopy beamlineat Sincrothron Radiation facility Elettra in Trieste, Italy, which is today one of the premiere synchrotron radiation microscopy facilities worldwide.
His work directly or indirectly impacts many areas of modern material science: surfaces, thin films, electronic materials and instrumentation. The invention and development of surface microscopy with slow electrons has revolutionized the study of surface science and thin film science.
Ernst Bauer authored or co-authored 457 publications (among them 85 review papers and book chapters) and two books: "Electron Diffraction: Theory, Practice and Applications", 1958, in German and “Surface Microscopy with Low Energy Electrons” 2014. His papers are widely cited (more than 12000 citations).
The broad international collaboration is typical for his research. The scientific achievements of Ernst Bauer have been multiply honored. Among other honors, he has received the E.W. Muller Award in 1985, the Gaede Prize of the German Vacuum Society in 1988, the Medard W. Welch Award of the American Vacuum Society in 1992, the Niedersachsenpreis for Science (Germany) in 1994, BESSY Innovation Award on Synchrotron Radiation in 2004 and the very prestigious Davisson-Germer Prize of the American Physical Society in 2005.In 2003 Ernst Bauer received the first Award of the Japan Society of Promotion of Science's 141st Committee on Microbeam Analysis and was made an honorary member of this organization. He was elected a Member of the Goettingen Academy of Sciences in 1989, Fellow of the American Physical Society in 1991 and Fellow of the American Vacuum Society in 1994. In 2008 he was honored by a Humboldt Research Prize and Doctor Honoris Causa at the Marie Sklodovska-Curie University, Lublin, Poland. In 2012 he was appointed as Fellow in ElettraSincrotrone Trieste for his contributions for development of Nanospectroscopy Beamline and in 2014he received Doctor Honoris Causa title from theWrocławUniversity, Poland.In 2015 he was electedas an International Fellow of the Japanese Society of Applied Physics and as Honorary Professor of the Chongqing University, China.
on Ernst Bauer’s Website in Arizona State University:http://ernstbauer.physics.asu.edu/
on Wikipedia: Ernst G. Bauer
Time: Nov. 4, 2015(Wedesday), 9:30am
Venue: Conference Room of Basic Energy Science Building