2001 TMS Annual Meeting: Hume-Rothery Award Symposium
February 11–15 · 2001 TMS
ANNUAL MEETING · New Orleans, Louisiana
During the week of February 11–15, 2001, at the 130th
Annual Meeting & Exhibition of The Minerals,
Metals & Materials Society (TMS), you can join more than 4,000 science
and engineering professionals, representing more than 70 different countries,
who will come together for the opportunity to add to their own store of knowledge
by capitalizing on the expertise and experience of their colleagues. More than
200 sessions and 1,000 individual presentations are scheduled. Whether your
technical interests lie in precious metal extraction, aluminum processing, high-temperature
superconductors, or just about any other materials field or metallurgical discipline,
you will find programming that addresses your most pressing needs.
The 2001 TMS Annual Meeting
& Exhibition will take place in New Orleans, Louisiana. The Hilton
New Orleans Riverside Hotel will be the headquarters hotel for the event.
All conference events, including registration, technical sessions, and the exhibition
will take place at the Ernest N. Morial Convention Center.
"Electronic Structure and Alloy Properties"
Sponsored by: Jt. EMPMD/SMD Alloy Phases Committee
Presented by: Prof. B.L.Gyorffy, H.H.Wills Physics Lab., Univ. of Bristol
Date: Monday, February 12, 2001
Time: 8:30 AM
Location: Room 202, Ernest N. Morial Convention Center
About the topic: A description of disorder is central to the theory of
Superconductivity. Although the pioneering works of Abrikosov and Gorkov(AB)[1]
and Anderson[2] explains the principle puzzle
of why it does not lead to finite resistance they do not add up to a complete
Mean Field Theory of disordered superconductors. In this talk Professor Gyorffy
will review recent progress in combining the Hartee-Fock-Gorkov and Coherent Potential
Approximations to provide such a theory[3].
The discussion will be based on a simple tight-binding model Hamiltonian which
features effective, attractive interactions between electrons on the same, or
nearest neighbor, sites and random site energies. Whilst the meaning and the breakdown
of the Andersen Theorem will be examined in detail, the emphasis will be on cases
of exotic, p-and d-wave, pairing relevant to recent experiments. The novel consequences
of alloy type of disorder on the quasiparticle spectra in these interesting cases
will be illustrated by explicit calculations.
[1] A.A. Abrikosov and L.P. Gorkov, Sov.Phys. JETP8, 1090 (1959)
[2] P.W. Anderson J. Phys. Chem. Solids 11,26 (1959) [3] A.M. Martin, G. Litak,
B.L. Gyorffy, J.F.Annett and K.I. Wysokynski Phys.Rev.B60,7523(1999)
About the Presenter: Prof. Balazs L. Gyorffy received his B.S. and Ph.D.
from Yale University. He has held the following positions at the University
of Bristol: 1970-1980 Lecturer, 1980-1987 Reader, 1987 – present Professor of
Theoretical Physics. He has held visiting positions at Oakridge National Laboratory,
Brookhaven National Laboratory, Institute Laue-Langevan, University of Toronto
and Technical University of Vienna. In collaboration with many, but particularly
with G.M. Stocks and J.S. Faulkner, he invited and pioneered the application
of the Korringa-Kohn-Rostoker- Coherent-Potential-Approximation (KKR-CPA), a
first-principles method for calcu-lating the electronic structure of metallic
alloys. Advances made using the KKR-CPA are sum-marized in Gyroffy et al
(Phil. Trans. R. Soc.Lond.A (1991) 334 515-516). Prof. Gyorffy has been
elected an external member of the Hungarian Academy of Sciences (1995), Fellow
of the Institute of Physics (1998) and was co-recipient of the Gordon Bell Prize
(1998). He has authored or co-authored 220 publications.
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