Copper ion dynamics and phase segregation in Cu-rich tetrahedrite: an NMR study

Nader Ghassemi, Yefan Tian, Xu Lu +3

${}^{63}$Cu NMR measurements are reported for the Cu-rich phase of \ch{Cu_{12+x}Sb4S13} ($x\lesssim 2$) and compared to \ch{Cu12Sb4S13}. We identify the NMR signatures of the phase…