2002/01/28 by Viktor V. Struzhkin, Yuri A. Timofeev, Struzhkin, Viktor V. +7
Physics and Astronomy · #FOS: Physical sciences #Superconductivity (cond-mat.supr-con) #cond-mat.supr-con
paper · pdf · doi:10.48550/arxiv.cond-mat/0201520
18 pages, 11 Postscript figures, 2 tables. Proceedings of the International School of Physics "Enrico Fermi", Volume CXLVII, "High-Pressure Phenomena", edited by R. J. Hemley, M. Bernasconi, L. Ulivi and G. Chiarotti, in press
arxiv created 2002/01/28 · arxiv updated 2009/11/30
We review recent advances in diamond anvil cell development, focusing on the details of magnetic susceptibility techniques. We have developed and implemented highly sensitive technique that allowed observations of superconductivity using magnetic susceptibility at megabar pressures, including the observation of a Tc in sulfur to above 230 GPa. The advancement of the technique should enable the most demanding diamond anvil cell applications. The Tc(P) data for simple s-p metals (Se,S, MgB2) are presented and analyzed. The possibility for a phonon-assisted electronic topological transition (ETT) in MgB2 at high pressure is discussed.