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Date: April 19, 2017
Speaker: Rick Greene, University of Maryland
Topic: The Current Experimental Status of the High Tc Problem
Time and Location: 1:00 p.m., with Q&A to follow in a 1st floor conference room at the American Center for Physics (www.acp.org), 1 Physics Ellipse, College Park, MD - off River Rd., between Kenilworth Ave. and Paint Branch Parkway.
Abstract: Will a room temperature superconductor soon be discovered? There is no known theoretical limitation on Tc at present. Recent work has produced a Tc of just over 200K in pressurized H3S. On the other hand, over 50,000 experimental papers have been published since 1987 on the copper oxide (cuprate) high Tc superconductors — and we still don’t understand them. In this talk, I will attempt to summarize the experimental properties of high-Tc superconductors that we presently understand and those that we don’t yet understand. I will not speculate on the "unknown unknowns", although some examples of these have appeared during the past 30 years of research.
Biography: B.S. in Physics, M.I.T., June 1960; Engineering Officer in U.S. Navy, 1960-62; Ph.D. in Physics, Stanford University, June 1967; Research Associate, Stanford University, 1967-70; Research Staff Member and Manager, IBM Research Division, San Jose, CA and Yorktown Heights, N.Y., 1970-89; Visiting Professor, University of Grenoble, France, 1978-79; Founding Director, Center for Superconductivity Research, University of Maryland, 1989-2007; Alford L. Ward Professor of Physics, University of Maryland, 2007-2011; Interim Director, Center for Nanophysics and Advanced Materials (CNAM), 2012-13; Fellow of the American Physical Society, 1980; Fellow of the American Association for the Advancement of Science (AAAS), 2010; Chairman of APS New Materials Prize Committee, 1986; Executive Committee of the APS Division of Condensed Matter Physics, 1992-95; APS Apker Award Committee, 2000-04; APS Adler Award Committee, 2014-present; Chairman of the Program Committee for Materials and Mechanisms of Superconductivity Conference (M2S-2012); ISI highly-cited physicist 1981-2004, over 400 publications, 23,000 citations and h-index 84 (Google Scholar).