Cuprates supraconducteurs: avancées récentes, ordres de charge, questions ouvertes / Superconducting Cuprates : Recent Advances, Charge Orders and Open Issues

26 mars 2015, 08:45 → 27 mars 2015, 19:00 Europe/Paris

Amphithéâtre Guillaume Budé (Collège de France)

Organizers : Antoine Georges et Louis Taillefer

The aim of this two-days conference/workshop is to present recent advances on cuprate superconductors, in connection in particular to charge ordering, and especially to discuss outstanding open questions in the field. Besides short presentations by invited speakers, a number of focused discussion sessions will be organized.

Confirmed speakers:

• P. Bourges (Saclay)
• J. Chang (EPFL)
• A. Chubukov (U. of Wisconsin/U. of Minnesota)
• A. Damascelli (UBC)
• J.C. Seamus Davis (Cornell)
• M.H. Julien (Grenoble)
• S. Kivelson (Stanford)
• G. Kotliar (Rutgers)
• M. Le Tacon (Stuttgart)
• A. J. Millis (Columbia)
• O. Parcollet (CEA Saclay)
• C. Pépin (Saclay)
• C. Proust (Toulouse)
• S. Sachdev (Harvard)
• A. Sacuto (Paris)
• L. Taillefer (Sherbrooke)
• A.-M. Tremblay (Sherbrooke)
• D. van der Marel (Geneva)

There are no fees and the conference is free-attendance. Registration is highly recommended to facilitate practical organization. Participation from younger scientists, graduate students and postdocs is strongly encouraged. All presentations and discussions will be in English.

jeudi 26 mars

1 Welcome (A. Georges & L. Taillefer)

2 Marc-Henri Julien : Field and temperature scales in charge-ordered YBa2Cu3Oy

3 Cyril Proust : Impact of charge order on the electronic properties of underdoped cuprates

10:00 Discussion

10:30 Break

4 Mathieu Le Tacon : Charge-density waves in the cuprates from x-ray scattering

5 Johan Chang : Charge ordering in YBa2Cu3Oy observed by hard x-ray diffraction

12:00 Discussion

12:45 Lunch (self-organized)

6 Seamus Davis : Atomic-scale antagonism between d-symmetry Cooper pairs and d-symmetry density waves in underdoped cuprates

7 Andrea Damascelli : Charge order in cuprates: from hole to electron doping

8 Steve Kivelson : Quenched disorder and vestigial nematicity and its relation to high temperature superconductivity

16:00 Discussion

16:30 Break

9 Louis Taillefer : Interplay of nematicity, charge order and superconductivity in YBCO

10 André-Marie Tremblay : Remnant of the first order Mott transition at finite doping as an organizing principle for strongly correlated superconductors

18:15 Discussion

vendredi 27 mars

11 Catherine Pépin : SU(2) symmetry in underdoped cuprates

12 Andrey Chubukov : Interplay between charge-density-wave and pair-density-wave orders in the cuprates

10:00 Discussion

10:30 Break

13 Gabriel Kotliar : How to identify the mechanism of superconductivity in the cuprate superconductors

14 Andrew Millis : Superconductivity and the pseudogap in the Hubbard model — implications for the cuprates

12:15 Discussion

12:45 Lunch (self-organized)

15 Philippe Bourges : Intra-unit-cell magnetic correlations near optimal doping in YBCO

16 Dirk van der Marel : What are the indications for the pseudogap in the temperature and frequency dependence of the optical conductivity ?

17 Alain Sacuto : The pseudogap and its collapse in cuprates

16:00 Discussion

16:30 Break

18 Olivier Parcollet : Quantum dimer dynamical mean-field theory and beyond

19 Subir Sachdev : A quantum dimer model for the pseudogap metal

18:15 Discussion