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20 papers · 1 filter
Breakdown of Fermi-liquid theory in a cuprate superconductor
R. W. Hill, Cyril Proust, Louis Taillefer +2
The behaviour of electrons in solids is remarkably well described by Landau's Fermi-liquid theory, which says that even though electrons in a metal interact they can still be treat…
Power laws in a 2-leg ladder of interacting spinless fermions
L. G. Caron, C. Bourbonnais
We use the Density-Matrix Renormalization Group to study the single-particle and two-particle correlation functions of spinless fermions in the ground state of a quarter-filled lad…
Comment on "Absence of a Slater Transition in the Two-Dimensional Hubbard Model"
B. Kyung, J. S. Landry, D. Poulin +1
In a recent paper, Phys. Rev. Lett. 87, 167010/1-4 (2001), Moukouri and Jarrell presented evidence that in the two-dimensional (d=2) Hubbard model at half-filling there is a metal-…
Analytical calculation of the Peierls-Nabarro pinning barrier for one-dimensional parametric double-well models
A. M. Dikande
Lattice effects on the kink families of two models for one-dimensional nonlinear Klein-Gordon systems with double-well on-site potentials are considered. The analytical expression…
Evidence of a d to s-wave pairing symmetry transition in the electron-doped cuprate superconductor PrCeCuO
Amlan Biswas, P. Fournier, M. M. Qazilbash +3
We present point contact spectroscopy (PCS) data for junctions between a normal metal and the electron doped cuprate superconductor PrCeCuO (PCCO). For the underdop…
On superconductivity in armchair carbon nanotubes
A. Sédéki, L. G. Caron, C. Bourbonnais
We use the momentum space renormalization group to study the influence of phonons and the Coulomb interaction on the superconducting response function of armchair single-walled nan…