The tutorial will cover the fundamentals and the practical use of state-of-the-art codes for the calculation of the electronic structure of bulk solids, surfaces, and defects and impurities in solids. This includes applications in thermodynamical properties, phase transitions, temperature and pressure effects, magnetic and spectroscopic properties, and surface properties including reactivity of and at surfaces. The influence of structural vacancies both in bulk and at surfaces will be addressed as an important topic influencing in a significant way the properties of different materials. The chemical reactivity of surfaces will be the subject of one of the lectures of the course, with a full discussion of different aspects of the modelling of the CO oxidation in a Y-doped TiO2 supported gold nanoparticles catalyst. That is, in summary, the content of the main theoretical and practical sessions, grouped into 8 and 4 subjects, respectively.
(Theo-1) Symmetry (Pablo García Fernández)
Summary of basic concepts. Space groups. Tensor quantities. Crystal strain. Bloch theorem. The symmetry of the wavefunction under periodic boundary conditions.
(Theo-2) Electronic structure. (Cristina Díaz)
Cluster and periodic models. Atomistic models. Kohn-Sham equations and DFT methodologies. Electronic structure calculations. Phonons and crystal searching.
(Theo-3) Thermodynamic properties. (Cristina Díaz)
Static models. Equation of state of solids. Phase transitions. Mechanisms and kinetics of phase transitions. Thermal effects.
(Theo-4) Chemical bonding and microscopic approach. (Julia Contreras)
Topologies of scalar fields in crystals. Electron density, electron localization function and reduced density gradient chemical functions. Chemical origin of compresibility. Chemical bonding reconstruction along a phase transition.
(Theo-5) Ab initio simulation of the structure, thermodynamic properties and reactivity in surfaces. (Antonio Márquez)
Computational models in Surface Science. Structure of surfaces: Tasker’s classification of ionic surfaces. Relaxation, rumpling, and reconstruction of surfaces. Surface energies. Surface defects: O vacancies in metal oxides. Adsorption at surfaces. Case studies: organic molecules and transition metal atoms at oxide surfaces. Reactivity at surfaces: organic molecules at simple surfaces. Role of point defects. Case study: CO oxidation on an oxide supported metal catalyst. Case study: highly correlated metal oxides: the case of ceria.
(Theo-6) Ab initio simulation of magnetic and optical properties, and structural instabilities of solids. (Miguel Moreno)
Introduction: Role of impurities in crystalline solids. Impurities in insulators. Localization. What are the calculations useful for? Substitutional Transition Metal Impurities in insulators: Description of states. Study of Model Systems: interatomic distances and colour. The colour of gemstones containing Cr3+. Static Jahn-Teller effect: description. Static Jahn-Teller effect: experimental evidence. Insight into the Jahn-Teller effect. Off centre motion of impurities: evidence and characteristics. Origin of the off centre distortion. Softening around impurities.
(Theo-7) Magnetic interactions in Molecules and Solids: Basic concepts and Spin Hamiltonians (Coen de Graaf)
Spin Hamiltonians. Effective Hamiltonian theory. Magnetism in condensed matter. Spin waves for ferromagnets. Antiferromagnetic lattices. Electron transport. Quantum Chemical approach to solid state magnetism. Four center interactions in cuprates.
(Theo-8) Magnetic anisotropy, Double exchange and spin wave theory (Coen de Graaf)
The International school on “The Frontiers of Attosecond and Ultrafast X-ray Science” will be held from 19th to 28th March 2017 in Erice, Sicily, Italy.
The primary objective of this new school is to educate the next generation of scientists who will impact the future of attosecond and ultrafast x-ray science. We anticipate that the school will meet on a regular basis every two years and become a foundation for the ultrafast community. Consequently, the main topics of the course are the following: (i) attosecond science and technology, devoted to the generation and application of attosecond pulses to the investigation of electronic dynamics in atoms, molecules, nanostructures and condensed phases; (ii) fundamentals, methods and applications of free electron lasers, synchrotron radiation, ion collisions in atomic and molecular science. Lectures will cover current developments in theory and experiments but are also intended to give the basics of the field.
Please note that, PhD students and post-docs willing to attend the school can apply for scholarships (deadline 30 January 2017). For more details see: http://www.erice-attosecond.it/registration
The school co-organised by XLIC COST Action and sponsored by Politecnico di Milano, Italian Ministry of Education and Scientific Research, Sicilian Regional Parliament, ELI-ALPS and Ettore Majorana Foundation and Centre for Scientific Culture.
Louis Di Mauro, Alicja Domaracka, Mauro Nisoli and Sergio Martellucci
The scientific workshop: “Massive Computation for Ultrafast Molecular Breaking” (MACUMB 2017) will be held in the Universidad Autónoma de Madrid (Spain) on 25th and 26th of May 2017.
The scientific program (http://www.macumb.info/programme.html) includes ten invited talks that will be combined with two 3-hours practical sessions in computer rooms. We aim to bring together developers of the state-of-the-art scientific software in the field of quantum chemistry and molecular physics.
Registration is already open and closes on May 15th, 2017. The registration for the meeting is free for all participants.
You can find detailed information at http://www.macumb.info/
Alicia Palacios, Sergio Díaz-Tendero and Jesús González-Vázquez
Departamento de Química, Facultad de Ciencias
Universidad Autónoma de Madrid
The CECAM workshop Seeking synergy between dynamics and statistics for non-equilibrium quantum processes will be held in Paris in June 6th-9th.
One of the major difficulties in achieving an accurate theoretical descriptions of non-equilibrium processes in quantum mechanical systems is framed by the desire to provide a representation of the system of interest that is as realistic as possible, in a manner that is computationally tractable. The coupling of electronic and nuclear motion involving excited states, the quantum nature of the nuclear degrees of freedom, and the application of time-dependent driving forces, are just few examples of the effects that must be addressed in order to simulate these processes. Each of these effects poses unique challenges to theoretical progress. A number of exact and approximate quantum dynamics techniques are being developed and refined in order to provide algorithms that respond to the demand for a balance between computational efficiency and physical accuracy. Currently available techniques are typically based upon two different, but equivalent, formulations of many-body quantum mechanics, the wave function approach or the density matrix picture.
The proposed workshop aims to bring together the two principal molecular quantum dynamics communities (wave-function methods and density matrix approaches). The scope is threefold, (i) to identify and explore common goals and obstacles, (ii) help in fostering new ideas to connect these approaches, and bridge the apparent gap between approximate dynamical and statistical descriptions, (iii) identify possible routes to extend dynamics approaches to the domain of statistics.
At the workshop, experts are asked to uncover the fundamental details of the methods in pedagogical lectures. These lectures will be followed by extensive discussions, during which contributed speakers and participants are welcome to put forth some of their doubts and problems in the relation between dynamics and statistics.
Further information can be at: https://www.cecam.org/workshop-1483.html
Preliminary invited speakers are:
Nandini Ananth (Cornell University, USA) Sara Bonella (CECAM, Switzerland) Irene Burghardt (Goethe University, Germany) Eitan Geva (University of Michigan, USA) E. K. U. Gross (Max-Planck Institute of Microstructure Physics, Germany) Raymond Kapral (University of Toronto, Canada) Dvira Segal (University of Toronto, Canada) Jeremy Richardson (ETH Zurich, Switzerland) Graham Worth (University College London, UK)
The two ICPEAC satellite meetings:
- The 25th International Symposium on Ion Atom Collisions (http://atom.curtin.edu.au/isiac)
- International Symposium on (e,2e), Double Photoionization and Related Topics with the 19th International Symposium on Polarization and Correlation in Electronic and Atomic Collisions http://atom.curtin.edu.au/e2epol
still welcome abstract submissions until the end of April. The confirmed invited speakers are available at the respective Scientific Program links.
We look forward to your participation,
Alisher Kadyrov, Chair of ISIAC
Igor Bray, Chair of (e,2e)-pol
Molecular reaction dynamics has become an integral part of modern chemistry and is set to become a cornerstone for much of the natural sciences. Molecular reaction dynamics is the study of elementary processes and the means of probing them, understanding them, and controlling them. It can be applied to reactions in solution and to reactions on surfaces, exploring the elementary steps in catalysis. Nowadays chemistry requires a molecular level understanding of the reactivity. Moreover, chemical kinetics in an old discipline (born in 1850) that deals with the rates of chemical reaction and how these rates depend on factors such as concentration and temperature. Although it in principle presents a macroscopic point of view, this can be directly related with the molecular point of view. Thus, kinetic or dynamic Monte Carlo simulations allow us to bridge the gap of many orders of magnitude in length and time scales between the processes on the molecular scale and the macroscopic kinetics.
The present school is open to European master and PhD students and postdocs with interest to understand chemical reactions at molecular level and to apply the theoretical and computational chemistry to this matter. First-year students of the Erasmus+ Master European in Theoretical Chemistry and Molecular Modelling will attend to this school as a part of their mandatory subjects although second-year students of this Master but from the rest of Europe it is expected that can attend too. Last year (2017) we made by first time this school and it was very successful.
The school will cover the principal aspects of the kinetics and dynamics of chemical reactions, centred mainly in the theoretical and computational approaches, although some experimental techniques will also be explained.
Registration deadline: March 9, 2018
More Information at https://www.cecam.org/workshop-1529.html
Photoinitiated processes are not only important for understanding natural phenomena but they also play an undeniable role in the booming fields of renewable energy, material design and medicine. Excited state processes have traditionally been explained from a static point of view, delivering in some cases a biased, incorrect or even incomplete description of the former. The simulation of the dynamics of such processes is therefore fundamental for the quest to understand the chemical and physical mechanisms.
The purpose of this school is to introduce its participants to state-of-the-art methodologies for the simulation of the dynamics of processes in the excited state, following the evolution in time of photoinitiated reactions, one of the priority topics of this call.
The school will be focused in simulating the dynamics of complex molecules. Electronic ab initio or TD-DFT methods would be sketched for obtaining the electronic wavefunctions or densities, that would be afterwards quantum-mechanically propagated. Moreover, several approaches for the treatment of the nuclei will be also provided, from full quantum dynamics to mixed quantum-classical dynamics.
The course is directed at PhD students, and young researchers, beginners in the field, working in theoretical chemistry and molecular physics.
The tutorial will be organized in 6 theoretical and 6 practical sessions, the latter taking place in the computer lab. The theoretical sessions will be of 3 hours and practical sessions will last 3 hours. The school will comprise 3 didactic blocks.
The first block will have an introductory character and will offer an overview of the field. The following block will focus on mono- and multi-configurational electronic structure methods for the description of excited states. The last block will cover dynamics methodologies. See description below. The school will end with a comprehensive overview (2 hours) of state-of-the-art applications, limitations, suitabilities, future perspectives and challenges of the different static and dynamical approaches described in the school.
More information: https://www.cecam.org/workshop-1542.html
The recent development of novel light sources like x-ray free-electron lasers and table-top lasers for high-harmonic generation, which are capable of delivering controllable sequences of intense sub-femtosecond ionizing pulses, has opened the way to monitor and control electron dynamics in atoms and molecules at its natural time scale, the attosecond (Chem. Rev. 2017, DOI: 10.1021/acs.chemrev.6b00453). The description of the coherent superposition of electronic continuum states that the interaction of such pulses with molecules generates goes beyond the capabilities of standard quantum-chemistry packages, which have been designed to describe the lowest bound states. Furthermore, stationary state-based pictures based on lowest-order perturbation theory are, in most cases, inapplicable. The purpose of this school is to introduce state-of-the-art ab-initio, hybrid and TDDFT numerical methods that can cope with ultra-fast dynamics in the electronic continuum of molecules, with an emphasis on unbound states in strong-fields and on the need to go beyond single-active-electron models to properly account for electron correlation. The course is directed to advanced master students, PhD students and young post-doctoral researchers in atomic and molecular physics, theoretical chemistry and applied mathematics, with an interest in developing new software for coherent control of electronic dynamics in systems of chemical interest.
The tutorial will be organized in 5 theoretical sessions and 4 practical sessions in the computer lab. Both theoretical and practical sessions will be of 4 hours. The school comprises four didactic blocks. The first block has an introductory character. It offers an overview of the field and a tutorial on strong field physics. The following three blocks focus on systems of increasing complexity and will be devoted to the description and use of new computational methods for fast time evolution in correlated systems in non-perturbative conditions (see description below). The school will end with a comprehensive overview of state-of-the-art results in attosecond pump-probe and strong field molecular science obtained with ab initio “exact” simulations in small systems, on the one side, and with TD-DFT effective-field simulations, capable of coping with larger systems, on the other side. The future perspectives, challenges and mutual interaction of these two complementary approaches will be discussed.
More information: https://www.cecam.org/workshop-1552.html
The CECAM workshop entitled ‘Non-adiabatic quantum dynamics: From Theory to Experiments’ (https://www.cecam.org/workshop-0-1638.html) will be held at CECAM HQ in Lausanne, Switzerland from 2nd-6th July 2018.
This workshop aims to consolidate the rapid development in the field of molecular quantum dynamics and increase the synergy between experimentalists and theoreticians in this area. The program features a number of invited presentations from leading theoreticians and experimentalists and will be supplemented by a number of talks selected from submitted abstracts.
We are looking forward to welcoming you to Lausanne.
Tom Penfold on behalf of all of the co-organisers.