Pressure suppression of charge order without metallisation in Cs2Au2I6.
Resistivity and powder X-ray diffraction measurements on Cs(2)Au(2)I(6) up to 320 kbar pressure show that the suppression of Au(+)/Au(3+) charge order above 55 kbar results in a non-metallic phase containing localised Au(2+) states that is irreversibly amorphised above 120 kbar, and a gradual metallisation observed above 175 kbar may result from decomposition within the amorphous material.
Kusmartseva
Anna F
AF
Centre for Science at Extreme Conditions (CSEC) and School of Chemistry, University of Edinburgh, Edinburgh, UK.
Yang
Minghui
M
Arevalo-Lopez
Angel M
AM
Kamenev
Konstantin V
KV
Attfield
J Paul
JP