9 papers
Smearing of phase transition due to surface effect in ferroelectric nanostructures
A. M. Bratkovsky, A. P. Levanyuk
The boundary conditions, customarily used in the Landau-type approach to ferroelectric thin films and nanostructures, have to be modified to take into account that a surface of a f…
Spin extraction from a non-magnetic semiconductor
A. M. Bratkovsky, V. V. Osipov
New efficient mechanism of obtaining spin polarization in_nonmagnetic_ semiconductors at arbitrary temperutures is described. The effect appears during tunneling of electrons from…
Comment on `Origin of combination frequencies in quantum magnetic oscillations of two-dimensional multiband metals' by T. Champel [Phys. Rev. B 65, 153403 (2002); cond-mat/0110154]
A. S. Alexandrov, A. M. Bratkovsky
We analyze the applicability of our analytical theory of combination harmonics in canonical low-dimensional multi-band Fermi liquids, which was recently criticized by Champel (Phys…
Three-body scattering problem and two-electron tunneling in molecular wires
A. S. Alexandrov, A. M. Bratkovsky, P. E. Kornilovitch
We solve the Lippmann-Schwinger equation describing elastic scattering of preformed pairs (e.g. bipolarons) off a short-range scattering center and find the two-particle transmissi…
Charge dynamics and metal-insulator transition in SiGd and SiY alloys
D. N. Basov, A. M. Bratkovsky, P. F. Henning +5
Carrier dynamics in amorphous a-SiRE (RE=Gd, Y) films has been studied in the doping regime close to the metal-insulator transition by means of infrared spectroscopy.…
Rigidity of the elastic domain structure near the boundary of its existence in thin epitaxial films
A. M. Bratkovsky, A. P. Levanyuk
We consider an interesting and practically important case of elastic domain structure, which is the analogue of c/a domain pattern with 90 walls in perovskites, and is solv…