282 citations · 323 across the 7 of their papers we have counts for
7 papers
Pair correlation and dynamic Jahn-Teller effect: high Tc in nanoclusters
Vladimir Kresin, Yurii Ovchinnikov, Jacques Friedel
Electronic states in metallic nanoclusters form energy shells and degree of their filling depends on the number of delocalized electrons. In the region close to half-filling the cl…
Dynamic coexistence of various configurations: clusters vs.nuclei
V. Z. Kresin, J. Friedel
The presence of energy shells in metallic clusters and atomic nuclei leads to a peculiar relation between the number of particles N and the structure, and this leads to a strong co…
Disclinations, dislocations and continuous defects: a reappraisal
Maurice Kleman, Jacques Friedel
Disclinations, first observed in mesomorphic phases, are relevant to a number of ill-ordered condensed matter media, with continuous symmetries or frustrated order. They also appea…
On the nature of antiferromagnetism in the CO_2 planes of oxide superconductors
J. Friedel, M. Kohmoto
Recent results on electrons and holes doped CuO 2 planes confirm the marked covalency of CuO bonding, suggesting a band picture of long and short range antiferromagnetism. The maxi…
Enhancement of superconductive critical temperatures in almost empty or full bands in two dimensions: possible relevance to beta-HfNCl, C60 and MgB2
Mahito Kohmoto, Iksoo Chang, Jacques Friedel
We examine possibility of enhancement of superconductive critical temperature in two-dimensions. The weak coupling BCS theory is applied, especially when the Fermi level is near th…
Phase transition between d-wave and anisotropic s-wave gaps in high temperature oxides superconductors
Iksoo Chang, Jacques Friedel, Mahito Kohmoto
We study models for superconductivity with two interactions: due to antiferromagnetic(AF) fluctuations and due to phonons, in a weak coupling approach to the high tempe…