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CECAM/MAX workshop Excitonic insulator: New pers ... (No replies)
we are pleased to announce the Workshop
Excitonic insulator: New perspectives in long-range interacting systems,
CECAM Headquarters, Lausanne (Switzerland) 3-5 September 2018.
Fifty years ago a few outstanding physicists, including Leonid Keldysh and the Nobel prize recipient Walter Kohn, put forward a heretic paradigm of a strongly correlated insulator: If a narrow-gap semiconductor (or a compensated semimetal) failed to fully screen its intrinsic charge carriers, then excitons--electron-hole pairs bound together by Coulomb attraction---would spontaneously form. This would destabilize the ground state, leading to a reconstructed ‘excitonic insulator’ that would exhibit a distinctive broken symmetry, inherited by the exciton character, as well as peculiar collective modes of purely electronic origin. So far, the observation of this phase has been elusive. Very recently, novel low-d systems seem to renew the promise of the excitonic insulator, as they combine truly long-ranged interactions and giant excitonic effects. By collecting the key actors of theoretical and experimental research, who are spread among different communities, this Workshop aims at the in-depth analysis of common themes and challenges, both theoretical and computational, to establish a roadmap to the excitonic insulator.
Information and abstract submission:
Full information on the workshop is available at https://www.cecam.org/workshop-0-1562.html . Oral presentations are by invitation only. Abstract submissions are open until 15 June 2018 through the workshop website (please include title and abstract). The program timetable will cover three full working days, including a poster session with short poster presentation talks. All participants will have their workshop fees waived.
Peter Abbamonte: TBA
Dario Bercioux: Quantum transport properties of an exciton insulator/superconductor hybrid junction
Leonid Butov: Condensation of indirect excitons
Pierluigi Cudazzo: Cumulant expansion of the electronic polarizability: Beyond the static Bethe-Salpeter equation
Joaquin Drut: Scale anomalies in low-dimensional non-relativistic matter
Rui-Rui Du: TBA
Jim Eisenstein: Exciton condensation and transport in a bilayer quantum Hall system
Holger Fehske: On the existence and nature of the excitonic insulator phase in the extended Falicov-Kimball model
Marcel Franz: TBA
Denis Golez: Photo-manipulation of band gap in excitonic insulator
Maria Hellgren: TBA
Igor Herbut: Three-dimensional Luttinger semimetal and its interacting phases
Dmitri Khveshchenko: Holographic description of excitonic phenomena
Jan Kunes: Excitonic magnetism in strongly correlated materials
Peter Littlewood: Excitons, plasmons, and phonons in SrTiO3
Allan MacDonald: Anatomy of exciton condensates in double bilayer graphene
Valerio Olevano: Insight from ab initio many-body GW into the possible excitonic insulator phase of TiSe2
Francois Peeters: TBA
Ajay Sood: Insights into excitonic insulator Ta2NiSe5by temperature and pressure dependent Raman scattering
Sandro Sorella: Correlation-driven dimerization and gap opening in isotropically strained graphene
Tineke Stroucken: TBA
Jasper van Wezel: Collective modes of the excitonic condensate in TiSe2
Daniele Varsano: TBA
With best regards,
Massimo Rontani and Elisa Molinari
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