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Prof.
Alain SACUTO
(Université Paris Diderot Paris 7)
16/09/2015, 08:30
DyProSo2015 Main track
Invited Talk
The pseudogap phase in cuprates remains hitherto a mysterious state of matter out of which the high-temperature superconductivity emerges. Discovered more than twenty five years ago [1], its indentification is still challenging although extensively studies have been carried out to elucidate its true nature [2,3]. In addition recent investigations in the underdoped side of the cuprate phase...
Dr
Alexander Boris
(Max Planck Institute for Solid State Research)
16/09/2015, 11:50
DyProSo2015 Main track
Talk
Cooper pairing of fermions is one of the most fundamental and successful concepts of condensed matter physics. The electron pair state is responsible for superconductivity, whereas the condensation of neutral electron-hole composite bosons is predicted to lead to an excitonic insulator state. Unlike superconductivity, the latter state does not exhibit a striking macroscopic manifestation of...
Dr
Thomas Forrest
(ESRF - The European Synchrotron)
16/09/2015, 10:15
DyProSo2015 Main track
Talk
We present a combination of Thermal Diffuse Scattering (TDS) and Inelastic X-ray Scattering (IXS) measurements, and Density Functional Perturbation Theory (DFPT) calculations of the lattice dynamics in superconducting BaNi2(As1-xPx)2. At Ts=130 K, BaNi2As2 undergoes a structural phase transition from a tetragonal to a triclinic crystal structure. In addition, superconductivity emerges at...
Jitae Park
16/09/2015, 09:50
DyProSo2015 Main track
Talk
A sharp magnetic collective mode appearing inside the superconducting energy gap in the spin excitation spectrum is a smoking-gun evidence for phase-reversed electron-pairing symmetry in unconventional superconductors. Such mode has been observed by inelastic neutron scattering in many of iron-based superconductors, in which the phase-reversed s
Dr
Matthieu Le Tacon
(Max Planck Institute for Solid State Research)
16/09/2015, 09:10
DyProSo2015 Main track
Invited Talk
I will present an overview of the results obtained from various x-ray scattering experiments on high temperature superconducting cuprates in the last couple of years.
I will first focus on Cu L-edge resonant scattering experiments that led us to uncover charge density wave (CDW) correlations competing with superconductivity in the YBCO family, for which a complete temperature and doping...
