coffee, tea, cookies at 16:15 in the main hall
Monday 16:30-17:30, Sem. room 1+2
- monthly seminars -
International Max Planck Research School (IMPRS)
Wednesday 16:30 - 18:00, Sem. room 1+2
- weekly seminars -
Monday 11:30-12:30, Room 2 A 1
Tuesday 11:00-12:30; Sem. room 1D1
Wednesday 16:30 - 17:30, Sem. room 1D1
Thursday 14:00-15:00, Sem. room 3
Thursday 15:30-17:00, Sem. room 3
Scientific Jam Session
Friday 13:30-14:10, Sem. room 1D1
All talks in chronological order
|Speaker ||Gutzwiller Award Ceremony, Tsuneyoshi Nakayama|
|Title ||Complex Disordered Systems: From Quantum Glass till Thermoelectric Clathrates|
|Room ||Seminarroom 1+2|
|Start Time ||16:30 - Monday 27 May 2013|
|Announced by ||Roderich Moessner|
|Abstract ||Complex disordered systems (CDS) are essentially different from conventional disordered systems. There are many examples of real systems belonging to the CDS category. These are glasses, fractal aggregates, granular systems, liquid water, disorder induced metal-insulator transition and many others, for which the concepts of connectivity, interference, dimensionality, and/or self-similarity become relevant.
I have been involved in these subjects over 35 years, from which my talk begins with my own early works on the Kapitza resistance between liquid He and solids in relevance to quantum glass, since “What’s past is prologue” as given in The Tempest by W. Shakespeare. The next/main subject is on my very recent works about type-I clathrate compounds satisfying “phonon-glass electron-crystal” concept proposed by G. A. Slack in 1995 to explore efficient thermoelectric materials.
The point is why these cage-forming compounds without topological disorder show almost identical dynamic and thermal properties to those of structural glasses “depending on” the positional symmetry of en-caged guest atoms. I will present, after surveying experimental data, theoretical interpretation on the emergence of glass-like properties in type-I clathrate compounds.