Workgroup Leader: Jeroen Van Den Brink 

WG1 (FU) is in charge of pursuing the SCIENCE Objective “To foster and coordinate a research aimed at advancing our present understanding about the way the multiple lattice and electronic degrees of freedom and of their mutual interactions determine the physical properties of TMOs” . WG1 will act in synergy with the Management WG in the organization of scientific meetings, and roundtables, that will be dedicated to the presentation of the groups and of their results, to the planning of activities and the presentation of joint applications in the field of fundamental understanding of TMO properties. The specific scientific activities fostered within this WG are described in two tasks

WG1–T1 “Experiments”

WG1–T2 “Theory”

 

 WG1–T1 “Experiments”

Task leader: Manuel Bibes (CNRS/Thales, FR)

Participants to this Action represent many of the leading groups in EU active within the research area of transition metal oxides (TMO) based materials. Samples of such oxides are fabricated within the Action  in the form of epitaxial thin films and heterostructures (resorting to different techniques such as pulsed laser deposition) single crystals, sintered pellets and nanocrystalline powders/films. TO-BE also includes groups having regular access to large scale facilities, both as users and as beamline staff, for techniques including X-ray based techniques at synchrotrons and FELs (X-ray diffraction, X-ray absorption spectroscopy with linear and circular dichroism, angle –resolved or angle-integrated photoemission spectroscopy, resonant inelastic X-ray scattering, photoemission electron microscopy), neutron based techniques (neutron scattering, polarised neutron reflectometry) and others. Small scale facilities which are also available to the Action participants include: high resolution electron microscopy, electron energy loss microscopy; optical spectroscopy experiments also based on ultrafast lasers; nanofabrication facilities (including electron beam lithography and focus ion beam etching); surface science facilities; magnetic characterization facilities including scanning SQUID microscopy; transport characterizations in external applied magnetic and electric fields down to the mK range.

 

 WG1–T2 “Theory”

Task leader: Mario Cuoco (CNR-SPIN, IT)

The interplay of ordered phases, strong-correlations and quantum topology is a timely and crucial issue in bulk oxides and heterostructures. There are many energy scales involved in the physics of oxide materials that, to be disentangled, call for the use of advanced probing techniques, as time-, space-, momentum- or energy-resolved, photon based spectroscopies. In order to understand experimental data deriving from such techniques it is central to combine methods which traditionally come from different sides of research, ranging from the first-principles methods, based on density functional theory (DFT), to advanced many-body techniques, as well as to approaches and theories able to capture the dynamics, the character of the excitations, as well as the transport properties. The aim of this WG is to support the coordination of the know-how concerning the different approaches both for the analysis of the emergent phenomena in some of its major manifestations in the oxide materials and the comparison of the methodologies used to address the specific aspects related to the nature of the ground state and of its elementary excitations.