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We analyze the dynamics of a magnetic flux quantum (current vortex) trapped in a current-biased long planar elliptic annular Josephson tunnel junction. The system is modeled by a perturbed sine-Gordon equation that determines the spatial and temporal behavior of the phase difference across the...
We simulate numerically the dynamics of
Na condensate in a time- and space-dependent magnetic field with a variational approach. It is shown to be an efficient method to describe the complex dynamics of the system, which may excite the breather mode, the scissor mode, and the...
A phenomenological theory is developed for the metamagnetism observed in heavy Fermion compounds by extension of the Landau theory for phase transitions. From simple analysis, the crossover behavior in high magnetic fields is indicated for the extended Landau-type free energy density. According...
We show that the temperature dependences of the basal-plane electrical resistance in cuprates of the 1–2–3 system can be described as a consequence of scattering of charge carriers on phonons and defects in conjunction with the fluctuation conductivity. The electron–phonon parameters values...
The temperature dependence of dc magnetization is investigated for the rare earth chromites SmCrO
and the doped compound SmCr
. Different from the magnetization behavior of SmCrO
We have observed a metal-insulator transition of a quasi-two-dimensional electronic system in transition metal dichalcogenide 2H-TaSe
caused by doping iron. The sheet resistance of 2H-Fe
$$0 \le x \le 0.120$$
We report a study of the temperature and stress dependence of the friction associated with a relative motion of crystallites of solid
He in contact with each other. A situation where such motion exists emerges spontaneously during a disordering of a single crystal contained...
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