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Showing 1 to 10 of 10 for “"Landau model"”.
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Landau model for films and interfaces of superfluid 4HE at T=OK
We use a Landau theory appropriate to an inhomogeneous superfluid at temperature T = 0 to describe structural and dynamical effects at a gas/superfluid interface and for a superfluid film on an inert attractive substrate. The parameters of the theory are determined phenomenologically by fitting …
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Landau Model for Films and Interfaces of Superfluid Helium-4 at T = 0k
We use a Landau theory appropriate to an inhomogeneous superfluid at temperature T = 0 to describe structural and dynamical effects at a gas/superfluid interface and for a superfluid film on an inert attractive substrate. The parameters of the theory are determined phenomenologically by fitting …
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Magnetic properties of dilute solutions of liquid He³ in He⁴ at low temperatures
… for the 5.0% solutions in agreement with the Landau model of a Fermi liquid. The susceptibility is found to be constant at sufficiently low temperatures also in agreement with the Landau model. Dilute solutions of He3 in He4 are found to behave as weakly interacting Fermi systems with the …
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Zero modes and degrees of freedom of topological solitons on the plane
… the coaxial multivortices of the Ginzburg-Landau, the Euclidean complex sine-Gordon-1 and -2 theories on the plane. More specifically, we determine the number of continuous free parameters describing the largest family of solutions, with these vortices as members. This is accomplished by …
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Superconducting Transition-Edge Sensor Physics
… utilization of the technology, a theoretical model of the physics governing TES devices superconducting phase transition has proven elusive. Earlier attempts to describe TESs assumed them to be uniform superconductors. Sadleir et al. 2010 shows that TESs are weak links and that the …
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Photoinduced phase transitions and irreversible dynamics studied with single-shot spectroscopy
… range of systems are discussed. Experiments and modeling of photoinduced phase transitions in two classes of systems, semimetals and manganites, are presented. Both systems show collective structural change under photoexcitation that ultimately results in a low-symmetry to high-symmetry phase …
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Critical current anisotropy in high temperature superconductors
… is well explained by the anisotropic Ginzburg-Landau model. Measurements were also made on thin films of the much more anisotropic Bi 2Sr2CaCu2O8+x material, grown on vicinal substrates. The absence of any flux channelling effect and clear adherence to the expected Kes-Law behaviour in the …
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Homogenization of Random Media: Random Walks, Diffusions and Stochastic Interface Models
… random environments and for stochastic interface models. The first chapter will survey recent research and introduce three models of interest: the random conductance model, the Ginzburg-Landau ∇φ model, and the symmetric diffusion process in a random medium. In the second chapter we present some …
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Ferroelectric System Dynamics and the Properties of Ferroelectric / Two-Dimensional Electron Gas Heterostructures: a Ginzburg–Landau Study
… By using a second-order time-dependent Ginzburg–Landau model, we simulate the dynamic polarization hysteresis behavior of a ferroelectric system subjected to a sinusoidal electric field. We examine polarization hysteresis loop structure as a function of both field amplitude and field frequency. …
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Some applications of the renormalization group
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-13T15:30:47Z No. of bitstreams: 1 1983_ma.pdf: 2732223 bytes, checksum: 7c77724bb1fc90e33cb3c86453dc4aa0 (MD5)