The high-pressure structures of an underdoped cuprate superconductor Bi 2 Sr 2 CaCu 2 O 8+δ have been studied by synchrotron X-ray diffraction at pressures up to 36.5 GPa. We find that this superconductor retains its orthogonal structure with the space group Amaa in the pressure range studied. Upon ...
Supported by Cultivation Fund of the Key Scientific and Technical Innovation Project, Ministry of Education of China (708070)
; U. S. DOE BES (DE-AC02-98CH10886)