<
first
] <
prev
] [Phuan Ong (Princeton Univ.) 35] [
NEXT
> [
last
>
The phase diagrams of LSCO and YBCO. The top and bottom
x
-axes are adjusted so that the in-plane hole concentrations per CuO_2 plane agree. The hole concentration in YBCO is determined by matching the thermopower
S
vs.
T
profiles in the two cuprates. Note that the hole concentration for YBCO (
y
= 6.95) is ~ 0.25, rather higher than the `optimal' concentration
x
= 0.15 in LSCO. The new calibration suggests that LSCO may have a significantly `stunted' superconducting region compared with that in YBCO. The red broken line shows the
T
c vs.
x
results measured in stressed films of La_{2-x}Ba_xCuO_4 (adapted from Sato et al. PRB 2000). The stressed curve for LSCO is closely similar. Stressing the films moves the
T
c line of La- based cuprates closer to the YBCO line. [Y. Wang et al.]
<
first
] <
prev
] [Phuan Ong (Princeton Univ.) 35] [
NEXT
> [
last
>
