Pressure dependence of out-of-plane conduction inLa2−xSrxCuO4

F. Nakamura, M. Kodama, S. Sakita, Y. Maeno, T. Fujita, H. Takahashi, N. Môri
1996 Physical Review B (Condensed Matter)  
Pressure dependence of out-of-plane resistivity c has been investigated in an optimally-doped high-T c cuprate La 2Ϫx Sr x CuO 4 . By applying pressure, we found a drastic decrease in c which reaches 50% at Pϭ8 GPa. This surprisingly large P dependence implies that the thermal contraction along the c axis is significantly reflected in the c (T) curve, leading to a metal-like term; hence La 2Ϫx Sr x CuO 4 is essentially characterized as a two-dimensional metal modified with nonmetallic
more » ... between CuO 2 layers. Tunneling is suggested for a possible mechanism for c .
doi:10.1103/physrevb.54.10061 pmid:9984744 fatcat:uogogzuvivb6vnirvibxlzn7c4