Pierre Toulemonde

TL;DR: In this paper, the authors performed high pressure resonant Raman experiments on single-wall carbon nanotubes with argon as pressure transmitting medium and found no clear sign of phase transformation up to the highest studied pressure.

TL;DR: In this article, the authors reviewed the properties of clathrate materials with C, Si, Ge or Sn framework atoms and showed that pressure appears as a key parameter for the elaboration of present and future clathrates in particular those exhibiting superconducting properties.

TL;DR: In this article, Shubnikov-de Haas (SdH) oscillations and upper critical magnetic field (Hc2) of the iron-based superconductor FeSe were studied by tunnel diode oscillator-based measurements in magnetic fields of up to 55 T and temperatures down to 1.6 K. Several Fourier components enter the SdH oscillations spectrum with frequencies definitely smaller than predicted by band structure calculations indicating band renormalization and reconstruction of the Fermi surface at low temperature, in line with previous ARPES data.

TL;DR: In this paper, high pressure Raman experiments on purified open-ended single wall carbon nanotubes using different pressure transmitting media (paraffin oil, argon and 4:1 methanol ethanol mixture) and two excitating wavelength (514.5 nm and 632.8 nm).

TL;DR: In this paper, the authors describe some important improvements allowed by the development of new cell assemblies coupled to opposed conical sintered diamond anvils in the Paris-Edinburgh press and provide X-ray absorption and diffraction experiments carried out at pressures up to 165 GPa.