Electronic structure of CuO2 planes: From insulator to superconductor

Using angle-resolved photoemission and linearly polarized synchrotron radiation, we measured the electronic band structure of electronic states of CuO2 plane materials ranging from insulators (Sr2CuO2Cl2) to overdoped superconductors (Bi2Sr2CaCu2O8+x). We report three results: (i) The CuO2 containing insulator possesses a spin-density-wave (SDW) ground state; (ii) there are precursors df the SDW state for underdoped Bi2Sr2CaCu2O8+x; (iii) an extended saddle-point-type van Hove singularity is neither a necessary nor a sufficient condition for a high superconducting transition temperature, T-c.


Published in:
Physical Review B, 56, 2, R525-R528
Year:
1997
ISSN:
0163-1829
Keywords:
Note:
Univ wisconsin,dept phys,madison,wi 53706. pl kapitsa phys problems inst,moscow,russia. LaRosa, S, ECOLE POLYTECH FED LAUSANNE,INST PHYS APPL,LAUSANNE,SWITZERLAND.
ISI Document Delivery No.: XL827
Laboratories:




 Record created 2006-10-03, last modified 2018-03-18


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