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  • 1
    Electronic Resource
    Electronic Resource
    Inverted stick–slip friction: What is the mechanism? (2002)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 116 (2002), S. 6871-6874 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: A mechanism is proposed for an observed inverted stick–slip motion and a relationship between the macroscopic mechanical response and the dynamics of the embedded system in this regime is established. It is shown that the requirement for the occurrence of inverted stick–slip is the existence of two sliding regimes in the system. The inverted stick–slip stems from a bifurcation from one sliding regime to another. The mechanism suggests that the inverted stick–slip behavior reflects a transition of the embedded system from nonslip to slip boundary conditions. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1471242
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  • 2
    Electronic Resource
    Electronic Resource
    Phase transitions in individual sub-micrometre superconductors (1997)
    [s.l.] : Macmillan Magazines Ltd.
    Nature 390 (1997), S. 259-262 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The properties of a superconductor are expected to change radically when its size becomes comparable to that of the Cooper pairs, the quasiparticles responsible for superconductivity. The effect of such confinement is well understood for the case of thesuppression of superconductivity by ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/36797
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  • 3
    Electronic Resource
    Electronic Resource
    Large-scale structure of fluctuating order parameter field (1994)
    Springer
    Journal of statistical physics 75 (1994), S. 241-252 
    Details
    ISSN: 1572-9613
    Keywords: Nonlinear excitations ; critical region ; renormalization group (RG) ; fluctuations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An effective free energy for a fluctuating system is investigated using an exact (local) renormalization group (RG) equation. This equation accounts for the fluctuation interaction in a reduced manner (at Fisher exponent η=0) and leads to a physical solution branch which gives realistic estimations for the free energy and nice critical exponents. It is shown that in spite of the monotonic character of the effective free energy in the critical region, all vertices should be taken into account in the effective Ginzburg-Landau-Wilson functional. The large-scale structure of the fluctuating field at a second-order phase transition is studied utilizing the calculated free energy and localized nonlinear excitations are found with profiles rather like those previously obtained in a model approach.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02186288
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  • 4
    Electronic Resource
    Electronic Resource
    Kinetics of vortex formation in superconductors with anisotropic pairing (1997)
    Springer
    Physics of the solid state 39 (1997), S. 29-31 
    Details
    ISSN: 1063-7834
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The evolution of the vortex state in superconductors with anisotropic pairing is investigated on the basis of the time-dependent Ginzburg-Landau equations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.1129825
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  • 5
    Electronic Resource
    Electronic Resource
    Phase-transition kinetics with the formation of topological defects in superconductors with a multicomponent order parameter (1997)
    Springer
    Journal of experimental and theoretical physics 85 (1997), S. 734-747 
    Details
    ISSN: 1090-6509
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper discusses the kinetics of phase transitions to superconductivity with a multicomponent order parameter in zero external field. It is shown that as it approaches equilibrium the superconductor passes through an intermediate vortex-like state containing domain walls, single-quantum, and multiquantum axially nonsymmetric vortices and antivortices. The energy and other parameters of the domain walls are derived. Rigid superconducting bubbles are discussed and criteria are established for their local stability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.558361
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  • 6
    Electronic Resource
    Electronic Resource
    Chain ordering in molecular dynamics and kinetics (1997)
    Springer
    Journal of experimental and theoretical physics 85 (1997), S. 949-958 
    Details
    ISSN: 1090-6509
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The molecular dynamics method is used to study ordering processes in a two-component two-dimensional Coulomb gas consisting of equal numbers of positively and negatively charged particles, a gas that models the behavior of a system of interacting vortices. It is found that as the system temperature decreases, starting from the well-known Kosterlitz-Thouless transition point the system exhibits additional vortex-chain ordering. This process is found to stimulate the production of vortex chains, which can be observed in real superfluids, magnetic materials, and superconducting systems. The results are compared with those obtained by modeling the kinetics in similar systems via the time-dependent continuum Heisenberg-Landau model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.558400
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  • 7
    Electronic Resource
    Electronic Resource
    Dynamic model of a double chain with hydrogen bonds (1998)
    Springer
    Journal of experimental and theoretical physics 86 (1998), S. 608-613 
    Details
    ISSN: 1090-6509
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The evolution of a system of two interacting molecular chains joined by the collective field of an adiabatically rapidly moving subsystem of light (hydrogen) atoms is considered. The motion of all three subsystems is simulated directly on the basis of the equation of the dynamics of an open system. An ordered structure, as well as its collective fluctuations, are obtained as a result of self-organization of the system in the presence of noise and relaxation. The possibilities of developing such a description for the direct simulation of DNA molecules are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.558512
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  • 8
    Electronic Resource
    Electronic Resource
    Two-component model for the growth of porous subsurface layers (1998)
    Springer
    Journal of experimental and theoretical physics 87 (1998), S. 814-822 
    Details
    ISSN: 1090-6509
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper studies a kinetic model that describes the interaction of two fluctuating densities. The model makes it possible to stably reproduce the growth of dense, porous, and fractal structures near the surface of solids placed in an active medium. The solutions of local and nonlocal equations of the model are studied, and the results are used to comment on the possible scenarios of the evolution of systems whose behavior can be reduced to such a model. Finally, the exponents of the growth of the front width in a steady-state regime are calculated for various values of the parameters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.558725
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  • 9
    Electronic Resource
    Electronic Resource
    Ordering of interacting subsystems. Molecular dynamics (1998)
    Springer
    Physics of the solid state 40 (1998), S. 1546-1549 
    Details
    ISSN: 1063-7834
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The molecular dynamics method is used to examine the ordering of interacting subsystems in a two-component, two-dimensional Coulomb gas, consisting of equal amounts of positively and negatively charged particles, which simulates the behavior of a system of interacting vortices. In particular, it is found that when the system temperature is lowered from the Kosterlitz-Thouless transition point, additional ordering of the vortex chains may take place. It is noted that this process may stimulate the development of vortex chains observed in real superfluid, magnetic, and superconducting systems. Possible applications of the molecular dynamics method to phase separation and the ordering of adiabatically slowly moving subsystems in the collective field of a fast subsystem are considered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.1130595
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  • 10
    Electronic Resource
    Electronic Resource
    Kinetics of vortex structure formation in magnetic materials (1997)
    Springer
    Journal of experimental and theoretical physics 84 (1997), S. 971-977 
    Details
    ISSN: 1090-6509
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A kinetic scenario for the formation of a vortex phase in magnetic materials is discussed. It is found that such a phase can be generated from fluctuations at the kinetic stage of evolution and can subsequently be fixed as a thermodynamically stable phase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.558187
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