Collapse of CuO Double Chains and Suppression of Superconductivity in High-Pressure Phase of YBa${}_2$Cu${}_4$O${}_8$

Atsuko Nakayama, Yusuke Onda, Shuhei Yamada +8

The crystal structure and electrical resistivity of YBa${}_2$Cu${}_4$O${}_8$ (Y124) were studied under high pressure up to 18 GPa using diamond-anvil cells, respectively, in order to cla…