Theoretical Physics
Department
(Head – Professor,
Corresponding Member of National Academy of Sciences of Ukraine V. I. Sugakov)
Main directions of scientific
activity:
-
Phase transformations
in crystals under nuclear and electromagnetic irradiation.
-
Energy spectrums and
optical characteristics of low-dimensional semiconductor structures.
-
Theoretical research
of the charge carrier transport in semiconductor polymers.
-
Theory of
semiconductor silicon detectors.
-
Scattering of neutron
and Messbauer radiation by condensed materials.
-
Theory of rotation
spectrums of atomic nuclei.
The most important scientific
results:
-
Theory of
self-organization processes has been built and this theory based on new
model of the periodic dissipative structure formation including spatial
superlattices and defect density self-excited oscillations under nuclear
irradiation of crystals has been created.
-
New effects in metals
with precipitates of rare gas atoms have been developed. New optical effects
connected with strong mixing of localized plasmon levels and excited states
of inert gas atom
crystallites were found. Also localized
superconducting states appearance in the vicinity of void in superconductors
in magnetic fields exceeding the second critical field
Hc2
has been predicted.
-
Physical property modeling of the fuel-containing materials
from the 4-th block of Chornobyl NPP has
been performed. The model for explanation of
fuel-containing material degradation has been proposed.
-
Explanation of
non-trivial phenomenon of the superconducting area appearance in binary
semiconductors under nuclear irradiation has been given.
-
New method of
electron and nucleus spin polarization during electron tunneling through
double barrier potential in diluted magnetic semiconductors has been
proposed.
-
Effect of the
narrowing of some exciton
bands in diluted magnetic
semiconductor based quantum wells with increasing the magnetic field has
been predicted.
-
Criteria were found which allowed distinguishing polaron and
non-polaron transport in disordered polymers via comparison of the theory
with experiments on drift mobility.
-
Theory of the PIN diode based sensor sensitivity for fast
neutron detectors and strip-detectors for determination of short-range
charged particle coordinates is build.
-
Effect of external
constant and variable magnetic fields on the form of soft ferromagnetic
Messbauer spectrum is investigated. Experimentally observed collapsed
Messbauer lines splitting under simultaneous influence of constant and
radio-frequency magnetic fields upon soft ferromagnetic were explained.
-
Analysis of
super-deformed and normal nucleus state mixing was fulfilled.