Daniel Groult

TL;DR: In this article, a review of the solid-state chemistry of the materials behind the recent revolution in superconductivity research is presented, focusing on the main features that are necessary for the generation of high Tc superconductivities, for example, low dimensionality of the structure, a mixed valence of copper, hole delocalization and the role of lone-pair cations and alkaline earth elements.

TL;DR: In this article, a new superconductor Pb 0.5 Cu 2 O 7−δ has been isolated whose superconducting properties depend upon the thermal treatments, i.e. are closely related to the oxygen stoichiometry.

TL;DR: In this paper, a track induced enhancement of the critical magnetization current density is observed at low fluences ( φt ⩽ 3 × 10 11 cm −2 ) but it appears to depend on the value and the orientation of the applied magnetic field with respect to the direction of the tracks.

TL;DR: In this paper, the effects of 35-GeV Xe ion irradiation on the superconducting (T/sub c/, J/subc/) and normal (R) properties of the high-T/Sub c/ superconductors YBa/sub 2/C/sub 3/O/sub 7-//sub delta/ with 01less than or equal todelta<07 have been investigated by means of n situ resistance measurements between 42 and 105 K.

TL;DR: The enhancement of the paramagnetic phase observed after an irradiation with high-energy deposition (Xe and Kr ions) compared to low- energy deposition (Ar ions) supports a damage mechanism based on the electronic stopping power.