Accession Number : ADA264340


Title :   Sensitive Detection of New Superconductors Created at Ultra High Pressures


Descriptive Note : Final rept. 1 Aug 90-31 Jan 93,


Corporate Author : CALIFORNIA UNIV SAN DIEGO LA JOLLA


Personal Author(s) : Schultz, Sheldon


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a264340.pdf


Report Date : 31 Jan 1993


Pagination or Media Count : 9


Abstract : In the original proposal we presented the evidence that by utilizing Low Field Modulated Microwave (LFMM) spectroscopy we could sensitively detect the onset of superconductivity in either films, pellets, or single crystals. The technique does not require leads, nor a percolation path, and is unperturbed by the presence of other non-superconducting phases. We suggested that by incorporating this technique in conjunction with the diamond anvil cell approach to high pressures, we could open up new opportunities for rapidly and sensitively studying the significant phase space corresponding to the pressure axis. The primary goal was to detect new normal metal to superconducting phase transitions, starting for example, with those copper compounds for which interesting transitory pressure effects had been reported many years prior to the discovery of the superconducting cuprates


Descriptors :   *DETECTION , *SUPERCONDUCTORS , *HIGH PRESSURE , METALS , FILMS , SENSITIVITY , COPPER , PELLETS , ELECTRON SPIN RESONANCE , SINGLE CRYSTALS , DIAMONDS , SPECTROSCOPY , PHASE TRANSFORMATIONS


Subject Categories : Physical Chemistry
      Crystallography
      Electricity and Magnetism
      Atomic and Molecular Physics and Spectroscopy


Distribution Statement : APPROVED FOR PUBLIC RELEASE