Triplet Josephson effect with magnetic feedback in a superconductor-ferromagnet heterostructure.

We study the ac Josephson effect in a superconductor-ferromagnet heterostructure with a variable magnetic configuration. The system supports triplet proximity correlations whose dynamics is coupled to the magnetic dynamics. This feedback dramatically modifies the behavior of the junction.

Fully developed triplet proximity effect.

We present a model for the fully developed proximity effect in superconductor-ferromagnet heterostructures. Within the circuit-theory approximation, we evaluate the Green functions, the density of states, and the Josephson current which depend essentially on the magnetic configuration.

Excitation of spin waves in superconducting ferromagnets.

This Letter presents a theoretical analysis of propagation of spin waves in a superconducting ferromagnet. The surface impedance was calculated for the case when the magnetization is normal to the sample surface. We found the frequencies at which the impedance and the power absorption have singularities related to the spin-wave propagation, and determined the form of these singularities.

Frictional drag in dilute bilayer 2D hole systems.

We develop a theory for frictional drag between two 2D hole layers in a dilute bilayer GaAs hole system, including effects of hole-hole and hole-phonon interactions. Our calculations suggest significant enhancement of hole drag transresistivity over the corresponding electron drag results. This enhancement originates from the exchange induced renormalization of the single-layer compressibility and the strong dependence of single-layer conductivity on density.

[Experimental bioplasty of tuberculous caverns of the lung].

A possibility of using allontransplants of the "Alloplant" series for pulmonary cavernoplasty has been developed and substantiated experimentally. Histological studies of an experimental pulmonary cavern under conditions of allotransplantation revealed the dynamics of the morphological transformation typical of human pulmonary cavern healing. A reparative process results in the liquidation of the specific changes in the cavern wall followed by the formation of a regenerate in the form of a stellate cicatrix.