A nonlinear-evolution set of equations of the hydrodynamic type describing a magnet with a noncollinear arrangement of spins is investigated. An explicit expression invariant to right and left spin rotations is used for ...

Strain influence on the longitudinal magnetoresistance for the n-type conductivity InSb whiskers doped by Sn to concentrations 6·10¹⁶–6·10¹⁷ сm⁻³ were studied at temperatures from 4.2 to 50 K and magnetic field up to 10 ...

The dynamics of a quaternary fragment of a discrete system of coupled nonlinear oscillators with modulated frequency parameters is investigated and the stability of its gap and out-gap soliton-like excitations is studied.

The Bose–Einstein condensation of vacancies in a three-dimensional decorated lattice is considered. The model describes possible scenario of superfluidity of solid helium, caused by the presence of zero-point vacancies in ...

The degenerate Hubbard-like chain with open boundary conditions is studied with the help of the Bethe ansatz. The special case of the Bose–Hubbard-like chain is studied in detail. Boundary bound states, which appear as ...

The ground-state energy of two electrons on a ring is calculated for the one-dimensional Hubbard model with positive and negative on-site interaction and for the contraction model with additive and multiplicative interaction ...

The rare-earth Kondo semiconductor CeNiSn is investigated by point-contact and tunneling spectroscopy using mechanically controllable break junctions. I(V) characteristics and their derivatives are recorded for contacts ...

We report the nucleation dynamics of bubbles induced by an acoustic wave pulse in ³He–⁴He liquid mixtures. The experiment was performed for the mixture with ³He fixed concentrations of about 4% and 25% and the pure ...

For overdoped cuprates, it is believed that the normal state behaves as an ordinary Fermi liquid while the superconducting state conforms to the BCS theory. We have put these beliefs to the test by a comprehensive experiment ...

We found that the coupled system of Josephson junctions under external electromagnetic radiation demonstrates a cascade of parametric instabilities. These instabilities appear along the IV characteristics within bias current ...