Structure of the Different Cu Sites in the Corrugated CuO2 Plane in High Tc Superconductors. Bianconi, A., Della Longa, S., Missori, M., Pettiti, I., Pompa, M., & Soldatov, A. Jpn. J. Appl. Phys., 32(Supplement 32-2):578–580, 1993.
Structure of the Different Cu Sites in the Corrugated CuO2 Plane in High Tc Superconductors [link]Paper  abstract   bibtex   
By using x-ray absorption spectroscopy different configurations of the Cu site structure in the CuO2 plane of the Bi 2:2:1:2 high Tc superconductor are found. The different Cu sites are characterized by short 2.3 \textbackslashAA and long 2.45 \textbackslashAA Cu-O(apical) distances. The linear arrays of different Cu sites forming domains with a corrugated-iron-foil shape is proposed to be a key feature of superconducting domains in the CuO2 plane. The wavelength λ of the modulation is close to the superconducting coherence length ξ and kF·λ∼2π. The ordering of the distorted Cu sites is suggested to be evidence for ordering of polarons driven by the pseudo Jahn Teller electron lattice interaction.
@article{bianconi_structure_1993,
	title = {Structure of the {Different} {Cu} {Sites} in the {Corrugated} {CuO}2 {Plane} in {High} {Tc} {Superconductors}},
	volume = {32},
	url = {http://jjap.jsap.jp/link?JJAPS/32S2/578/},
	abstract = {By using x-ray absorption spectroscopy different configurations of the Cu site structure in the CuO2 plane of the Bi 2:2:1:2 high Tc superconductor are found. The different Cu sites are characterized by short 2.3 {\textbackslash}AA and long 2.45 {\textbackslash}AA Cu-O(apical) distances. The linear arrays of different Cu sites forming domains with a corrugated-iron-foil shape is proposed to be a key feature of superconducting domains in the CuO2 plane. The wavelength λ of the modulation is close to the superconducting coherence length ξ and kF·λ∼2π. The ordering of the distorted Cu sites is suggested to be evidence for ordering of polarons driven by the pseudo Jahn Teller electron lattice interaction.},
	number = {Supplement 32-2},
	journal = {Jpn. J. Appl. Phys.},
	author = {Bianconi, Antonio and Della Longa, Stefano and Missori, Mauro and Pettiti, Ida and Pompa, Margherita and Soldatov, Alexander},
	year = {1993},
	keywords = {cdw, polaron},
	pages = {578--580}
}

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