709 research outputs found
Coralliophila occidentale Kosuge et Fernandes, 1988
Catálogo do Museo de Historia Natural USC. n. inventario 10014
Phase Relations in the Li2O-V2O3-V2O5 System at 700 C: Correlations with Magnetic Defect Concentration in Heavy Fermion LiV2O4
The phase relations in the Li2O-V2O3-V2O5 ternary system at 700 C for
compositions in equilibrium with LiV2O4 are reported. This study clarified the
synthesis conditions under which low and high magnetic defect concentrations
can be obtained within the spinel structure of LiV2O4. We confirmed that the
LiV2O4 phase can be obtained containing low (0.006 mol%) to high (0.83 mol%)
magnetic defect concentrations n{defect} and with consistently high magnetic
defect spin S values between 3 and 6.5. The high n{defect} values were obtained
in the LiV2O4 phase in equilibrium with V2O3, Li3VO4, or LiVO2 and the low
values in the LiV2O4 phase in equilibrium with V3O5. A model is suggested to
explain this correlation.Comment: 6 pages, 7 figures; Phys. Rev. B (accepted
Superconductivity and Density Wave in the Quasi-One-Dimensional Systems: Renormalization Group Study
The anisotropic superconductivity and the density wave have been investigated
by applying the Kadanoff-Wilson renormalization group technique to the
quasi-one-dimensional system with finite-range interactions. It is found that a
temperature (T) dependence of response functions is proportional to exp(1/T) in
a wide region of temperature even within the one-loop approximation. Transition
temperatures are calculated to obtain the phase diagram of the
quasi-one-dimensional system, which is compared with that of the
pure-one-dimensional system. Next-nearest neighbor interactions (V_2) induce
large charge fluctuations, which suppress the d_{x^2 -y^2}-wave singlet
superconducting (dSS) state and enhance the f-wave triplet superconducting
(fTS) state. From this effect, the transition temperature of fTS becomes
comparable to that of dSS for large V_2, so that field-induced f-wave triplet
pairing could be possible. These features are discussed to comprehend the
experiments on the (TMTSF)_2PF_6 salt.Comment: 8 pages, 4 figures, submitted to J. Phys. Soc. Jp
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