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||Max-Planck-Institut für Festkörperforschung
Theory of response functions of condensed matter.
Theory of dielectric permeability and magnetic permittivity in solids.
Theory of superconductivity.
Electron-phonon interaction in superconductors.
High-temperature superconductors: electron-phonon interaction.
High-temperature superconductors: optical properties.
High-temperature superconductors: thermodynamical and transport properties.
Superconducting properties of fullerenes.
Electromagnetic properties of Abrikosov vortices.
I started my scientific life as a graduate student
at Moscow Institute of Physics and Technology, (Department of Theoretical
Physics and Astrophysics headed by Prof. V.L. Ginzburg). My diploma thesis
( under the supervision of Prof. D.A.Kirzhnits) was devoted to the superconductivity
of the matter under the superstrong pressure and its application to white
dwarfs. After graduation in 1975 I continued my education as a Ph. D. student
at the same
Department and at I.E. Tamm Theoretical Department
of P.N. Lebedev Physical Institute of the Academy of Sciences of the USSR.
Here my works were related to the problem of high temperature superconductivity.
From September, 1978 I was a staff member of
the Lebedev Physical Institute. My work there was covering several different
areas, including the theory of electromagnetic response functions and the
theory of superconductivity. In
the former I should like to mention general restrictions
on static values of electrodynamic response functions (with D.A. Kirzhnits
and V.V.Losyakov ).
After the discovery of high-Tc
superconductivity in 1986 my main interest was in the investigation of
the dynamical and thermodynamical properties of these compounds. The main
attention was attached to the model
of the strong retarded electron-phonon ( or,
generally, electron-boson) interaction. It was shown that this model leads
to the new effects in superconductors, e.g. to the positive curvature of
an upper magnetic field (with L.N. Bulaevskii) and to the absence of the
Hebel-Slichter peak in the NMR relaxation rate just below Tc (with
A.A. Golubov). This allow to explain some experimental data for superconducting
cuprates. The large number of publications was devoted to the investigation
of the optical properties of high-Tc superconductors.
It was found that, in contrast to the standard Fermi-liquid theory, the
optical scattering rate in normal state systems with the strong retarded
interaction has quasilinear frequency dependence in a broad frequency interval
( with E.G. Maksimov and S.V. Shulga), what was observed experimentally
in cuprates. Is was propose a
method for the analysis of the intermediate boson
spectra from the optical experimental data. This approach was applied to
the high-Tc superconductors and systems with heavy fermions.
An optical conductivity of
the superconductors with extremally strong electron-boson
interaction ( with R. Combescot and D. Rainer).
Recently a number of papers
was published in which the model with predominantly forward interelectron
scattering ( due to strong correlations) was investigated ( with M.L. Kulic).
Another recent activity (
with N. Schopohl) concerns the macroscopic response of superconductors
on the electromagnetic influence. In particular it was shown that the wide
spread statement about the linear temperature
dependence of the magnetic penetration depth
in anisotropic superconductors contradicts to the third law of thermodynamics.
Last Update: December 2004