
TY  - JOUR
A1  - Dobson, JF 
A1  - Bocquet, AE 
A1  - Healy, PC 
A1  - Myhra, S 
A1  - Stewart, AM 
A1  - Thompson, JG 
T1  - X-ray Photoelectron Studies of High-temperature Superconductors: Evidence for the Importance of Alkaline Earth Metals
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 1989
VL  - 42
IS  - 4
SP  - 409
EP  - 412
KW  - 
UR  - https://doi.org/10.1071/PH890409 
N2  - All high·temperature superconducting ceramics so far studied contain alkaline-earth ions, and in all cases core-level X-ray photoelectron spectroscopy shows an anomalous low-binding energy peak from these ions. We argue that this may point to electron-rich alkaline earth layers. These should be highly polarisable, allowing them to facilitate uperconductivity by screening the repulsion between electrons and/or holes in the CuD layers. 
ER  -

