Mikhail Katsnelson

Lecture at receiption of Hamburg prize for theoretical physics (Hamburg, November 2016)

Spinoza Lecture (The Hague, September 2013)

General scientific interests

Physics of strongly correlated systems and quantum theory of magnetism, especially Kondo lattices, itinerant-electron magnetism, low-dimensional and frustrated magnets, role of correlation effects in transition metals and their compounds, in particular, at their surfaces. General problems and methods of quantum many-body theory.

Nanoscale magnetism, in particular, quantum decoherence effects in molecular magnets and magnetic nanoparticles; multiscale problems in magnetism. General problems of quantum measurement theory and physics of open quantum systems.

Lattice properties of solids, including influence of electronic and crystal structure peculiarities on elastic, mechanical and thermodynamic properties, equilibrium and nonequilibrium phase transitions and pre-transition phenomena, anharmonic effects, physics of melting; nonlinear phenomena in crystal lattice dynamics, physics of defects.

Soft condensed matter, including self-assembly problem.


Specific interests and results

1. Theory of spin polaron states in ferromagnetic semiconductors in a critical region near Curie temperature

2. A description of superconductivity and antiferromagnetism without anomalous averages

3. Theory of non-quasiparticle (spin polaron) effects in itinerant electron ferromagnets especially in half-metallic ferromagnets

4. A scaling approach to the theory of magnetic Kondo lattices

5. An ab initio theory of exchange interactions in magnetic solids and molecules

6. Theory of the effects of Van Hove singularities in an electron energy spectrum on anomalies of lattice properties and structural phase transitions in metals

7. An investigation of nonlinear phenomena in lattice dynamics of metals (phonon phase locking, quasistatic displacements etc.)

8. Ab initio molecular dynamics for spin systems and for tunneling processes

9. A model for description of anomalous lattice and electronic properties of metallic systems with nanoscale heterogeneous fluctuations, in particular, Ti- and Zr- based high resistivity alloys

10. Methods to include correlation effects in band structure calculations and their application to the magnetism of transition metals

11. Many-spin models and the description of spin dynamics and decoherence phenomena in molecular magnets

12. An investigation of the connections between the many-body physics and quantum measurement theory, in particular, the decoherence wave in distributed quantum systems

13. Peculiarities of electronic structure of crystals with dislocations and their role in strength and plasticity phenomena

14. Orbital Kondo effect at transition metal surface and its STM visualization

15. Coarse-graining approach to multiscale problems in magnetism

16. Anharmonic lattice dynamics of metals

17. An investigation and justification of the Van Hove scenario for high-temperature superconductors

18. Electronic and structural properties of single-layer and bilayer carbon (graphene)

19. Phenomenological theory of bolaamphiphilic vesicle formation and influence of magnetic field on the vesicle shape

20. Ab initio theory of dynamical core-hole screening in X-ray spectra of solids