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# Search results

161,312 records were found.

## d- and p-wave superconductivity mediated by spin fluctuations in two- and three-dimensional single-band repulsive Hubbard model

Comment: 30 figures, to be published in J. Phs. Soc. Jpn

## Magnetic properties of the Hubbard model on three-dimensional lattices: fluctuation-exchange and two-particle self-consistent studies

Comment: 16 figures, to be published in J. Phys. Soc. Jpn

## Low-lying excitations of a trapped rotating Bose-Einstein condensate

We investigate the low-lying excitations of a weakly-interacting, harmonically-trapped Bose-Einstein condensed gas under rotation, in the limit where the angular mometum $L$ of the system is much less than the number of the atoms $N$ in the trap. We show that in the asymptotic limit $N \to \infty$ the excitation energy, measured from the energy of the lowest state, is given by $27 N_{3}(N_{3}-1) v_0 /68$, where $N_{3}$ is the number of octupole excitations and $v_{0}$ is the unit of the interaction energy.

## Intensity correlations in electronic wave propagation in a disordered medium: the influence of spin-orbit scattering

Comment: 15 pages, written in plain TeX, Preprint OUTP-93-42S (University of Oxford), to appear in Phys. Rev. B

## Interplane relaxation and the bilayer coupling in Y$_2$Ba$_4$Cu$_7$O$_{15}$

Comment: uuencoded, compressed postscript file

## Exact Five-Loop Renormalization Group Functions of $\phi^4$-Theory with O(N)-Symmetric and Cubic Interactions. Critical Exponents up to $\ep^5$

Comment: PostScript file

## Random Quantum Spin Chains: A Real-Space Renormalization Group Study

Comment: 4 pages, RevTex, 2 figures available on request (wester@mit.edu)

## Monte Carlo Simulation of Magnetization Reversal in Fe Sesquilayers on W(110)

Iron sesquilayers grown at room temperature on W(110) exhibit a pronounced coercivity maximum near a coverage of 1.5 atomic monolayers. On lattices which faithfully reproduce the morphology of the real films, a kinetic Ising model is utilized to simulate the domain-wall motion. Simulations reveal that the dynamics is dominated by the second-layer islands, which act as pinning centers. The simulated dependencies of the coercivity on the film coverage, as well as on the temperature and the frequency of the applied field, are very similar to those measured in experiments. Unlike previous micromagnetic models, the presented approach provides insight into the dynamics of the domain-wall motion and clearly reveals the role of thermal fluctuations.

## Identifying and Indexing Icosahedral Quasicrystals from Powder Diffraction Patterns

Comment: 4 pages, 1 figure

## Spectrum of a spin chain with inverse square exchange

Comment: 9 pages, latex