Abstract
Pressure dependence of out-of-plane resistivity has been investigated in an optimally-doped high- cuprate . By applying pressure, we found a drastic decrease in which reaches 50% at P=8 GPa. This surprisingly large P dependence implies that the thermal contraction along the c axis is significantly reflected in the (T) curve, leading to a metal-like term; hence is essentially characterized as a two-dimensional metal modified with nonmetallic conduction between layers. Tunneling is suggested for a possible mechanism for . © 1996 The American Physical Society.
- Received 24 April 1996
DOI:https://doi.org/10.1103/PhysRevB.54.10061
©1996 American Physical Society