Accession Number : AD1011275

Title :   Tailoring the Crystal Structure Toward Optimal Super Conductors

Descriptive Note : Technical Report,01 Mar 2011,13 Jun 2016

Corporate Author : Rice University Houston United States

Personal Author(s) : Morosan,Emilia

Full Text :

Report Date : 23 Jun 2016

Pagination or Media Count : 11

Abstract : We have studied the properties of layered transition metal compounds in search of unconventional superconductors. The aim is to identify ground states competing with superconductivity, and to use tuning parameters such as doping or pressure, to reveal the effects of this competition. The key results from the project are: -the discovery of remarkable transport properties in the doped layered dichalcogenide TiSe2, where Pt doping or Se deficiency result in a 10 order of magnitude change in the low temperature resistivity.- the synthesis and characterization of single crystals of GeBi2Te4, where the proper structural characterization revealed the non-trivial topological metal properties of this compound- the discovery of remarkably high ordering temperature (up to 300 K) in R5Pb3 compounds (R = heavy rare earth)- the discovery of enhanced itinerant magnetism in Co2As1-xPx, with the magnetic properties tuned by structural phase transitions.

Descriptors :   superconductivity , magnetism , crystal structure , transition metal compounds , Ground state , Transport properties , Synthesis (Chemistry) , temperature , single crystals , magnetic properties , Phase transformations , Tuning , magnetoresistance , topology , Coupling (Interaction)

Distribution Statement : APPROVED FOR PUBLIC RELEASE