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Program

(Work in progress, please come back later for an updated program)

Our workshop in Heidelberg will be from Monday morning the 23rd of September 2024 to Friday the 27th at lunch time. The program includes alternating theory sessions with lectures and hands-on tutorials. We expect participants to arrive on Sunday evening (or Monday morning early) and leave on Friday.

We will add links to tutorials and powerpoint presentations in the week before the workshop.

Sunday 22-9-2024 Monday 23-9-2024 Tuesday 24-9-2024 Wednesday 25-9-2022 Thursday 26-9-2024 Friday 27-9-2024
9:00 - 10:30 Lecture F. de Groot
Introduction to core level spectroscopy and theoretical models.
Lecture M.-A. Arrio
Atomic multiplets and Crystal-field theory
Lecture F. de Groot
Introduction to core level spectroscopy and theoretical models.
Lecture E. Elnaggar
Polarization and dichroism
Lecture M. Retegan
Calculations using Crispy, a graphical interface
Codes
Crispy, a graphical interface
10:30 - 11:00 Coffee Coffee Coffee Coffee Coffee
11:00 - 12:30 Hands-on tutorials
Introduction to Quanty, a many-body script language. (Orbitals, Slater-determinants, many-particle eigenstates, configuration interaction, restricted active space, Green’s functions, Self energy)
Background literature
Lua Reference Manual
Quanty Reference Manual
Hands-on tutorials
Atomic multiplet theory. Ligand field theory. Ground-state calculations and temperature (Boltzmann statistics). Magnetic susceptibility.
Hands-on tutorials
Crystal field theory, Ligand field theory and Anderson impurity models for many different spectroscopy techniques (XAS, L23 and K-edge, Fluorescence yield L23M45 and L23M1, RIXS core valence and core core excitations, nIXS valence and core excitations, PES, corePES, IPES and XES) and methods to analyse the models and spectra (Energy level diagrams, Density matrix plots, temperature, conductivity tensors to capture polarization)
Hands-on tutorials
Polarisation dependence and tensor formulation of XAS, RIXS and NIXS
Background literature
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Tutorials
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Hands-on tutorials
Calculations using Crispy, a graphical user interface
12:30 - 13:30 Lunch Lunch Lunch Lunch Lunch
13:30 - 15:00 Lecture M.W. Haverkort
Green's functions and spectroscopy. Anderson impurity models and Dynamical Mean-Field Theory
Lecture A. Juhin
Density functional theory and K-edges. The spectrum as partial density of states
Lecture M. W. Haverkort
Ab initio many-body techniques
Lecture ---
Resonant inelastic x-ray scattering
Departure
15:00 - 15:30 Coffee Coffee Coffee Coffee
15:30 - 17:00 Hands-on tutorials
Crystal-field theory: Ground-state calculations including Energy level diagram, finite temperature, magnetic susceptibility. Spectroscopy calculations including cPES, XAS, nIXS and RIXS (Tutorial continues on Tuesday.)
Background literature
A list of important point groups and the crystal-field for different representations
Powerpoints
Expansion of a potential on spherical Harmonics
Tutorials
tutorials introduction to crystal field theory
Hands-on tutorials
Density functional theory calculations: bands, Density of states, Wannier functions and derived model Hamiltonians
Tutorials
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Hands-on tutorials
From DFT to many-body model calculations
Tutorials
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Hands-on tutorials
RIXS: Polarisation dependence, resonant energy dependence and dispersion of magnons. Effective operators, local cluster calculations and linear spin-wave theory.
Tutorials
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17:00 - … Arrival Free evening program Free evening program Poster session
Time for the participants to present their own research.
Free evening program

Posters

Feel free to bring your poster on Monday morning and place it on one of the walls of our institute.

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