11 research outputs found
d-wave superconductivity near charge instabilities
We investigate the symmetry of the superconducting order parameter in the
proximity of a phase-separation or of an incommensurate charge-density-wave
instability. The attractive effective interaction at small or intermediate
transferred momenta is singular near the instability. This strongly
-dependent interaction, together with a residual local repulsion between the
quasiparticles and an enhanced density of states for band structures
appropriate for the high temperature superconducting oxides, strongly favors
the formation of -wave superconductivity. The relative stability with
respect to superconductivity in the -wave channel is discussed in detail,
finding this latter hardly realized in the above conditions. The
superconducting temperature is mostly determined by the closeness to the
quantum critical point associated to the charge instability and displays a
stronger dependence on doping with respect to the simple proximity to a Van
Hove singularity. The relevance of this scenario and the generic agreement of
the resulting phase diagram with the properties displayed by high temperature
superconducting oxides is discussed.Comment: 1 revtex file and 12 postscript figure
Modeling of α/ÎČ for late rectal toxicity from a randomized phase II study: conventional versus hypofractionated scheme for localized prostate cancer
Radiation Therapy and Surgery in the Treatment of Regional Lymph Nodes in Squamous Cell Carcinoma of the Vulva
Should patients with CKD stage 5D and biochemical evidence of secondary hyperparathyroidism be prescribed calcimimetic therapy? An ERA-EDTA position statement
This paper reflects the position of the CKD-MBD workgroup, an official working group of ERA-EDTA and of the ERBP advisory board, the official guideline-producing body of ERA-EDTA, on the topic of the use of calcimimetics in patients with CKD stage 5D, as based on two recent meta-analysis
Von mises approximation of the critical value of a test
Robustness in hypotheses testing, von Mises expansion, influence function, tail area influence function, saddlepoint approximation, Primary 62F35, secondary 62E17, 62F03,