7 research outputs found
Theory of "ferrisuperconductivity" in
We construct a two component Ginzburg-Landau theory with coherent pair motion
and incoherent quasiparticles for the phase diagram of .
The two staggered superconducting states live at the Brillouin zone center and
the zone boundary, and coexist for temperatures at concentrations
. We predict below
appearance of a charge density wave (CDW) and Be-sublattice distortion. The
distortion explains the SR relaxation anomaly, and Th-impurity mediated
scattering of ultrasound to CDW fluctuations explains the attenuation peak.Comment: 4 pages, 4 eps figures, REVTe
Staggered Pairing Phenomenology for UPd_2Al_3 and UNi_2Al_3
We apply the staggered-pairing Ginzburg-Landau phenomenology to describe
superconductivity in UPd_2Al_3 and UNi_2Al_3. The phenomenology was applied
successfully to UPt_3 so it explains why these materials have qualitatively
different superconducting phase diagrams although they have the same
point-group symmetry. UPd_2Al_3 and UNi_2Al_3 have a two-component
superconducting order parameter transforming as an H-point irreducible
representation of the space group. Staggered superconductivity can induce
charge-density waves characterized by new Bragg peaks suggesting experimental
tests of the phenomenology.Comment: 4 pages, REVTeX, 2 Postscript figure
EFFECT OF COLLISIONS BETWEEN THE METASTABLE ATOMS ON THEIR RADIAL TRANSPORT IN A POSITIVE COLUMN AT VARIOUS SPATIAL DISTRIBUTIONS OF ELECTRONS
The purpose of the present contribution is to study the radial transport of metastables to the discharge tube wall when collisions between two metastable atoms are taken into consideration together with other destruction processes. The number density distribution of metastables across a section of the positive column and their flux to the discharge tube wall are calculated for various spatial distribution of electrons
TRANSPORT OF METASTABLE ATOMS IN A POSITIVE COLUMN INCLUDING RADIAL VARIATION OF THE EXCITATION RATE
The effect of radial variation of the rate coefficient for excitation on spatial distribution of metestables across a section of the positive column and on their flux to the discharge tube wall is calculated