The Cu-O pair-distribution function in a Bi2Sr2CaCu2O8+y superconductor
has been measured by polarized Cu K-edge extended x-ray-absorption
fine structure at T<Tc. The results show an anomalous long Cu-O (planar)
distance, 1.96 Å, assigned to distorted CuO2 stripes of width W intercalated
with undistorted stripes of width L. From the measurement of L=15±0.5
Å we have calculated the energies En of the bottom of the one-dimensional
subbands of the superlattice and found that the Fermi level EF is
tuned to a ‘‘shape resonance’’ EF-En<ħωD, where ωD is the Debye frequency,
giving the Tc amplification.
%0 Journal Article
%1 Bianconi1996
%A Bianconi, A.
%A Saini, N. L.
%A Rossetti, T.
%A Lanzara, A.
%A Perali, A.
%A Missori, M.
%A Oyanagi, H.
%A Yamaguchi, H.
%A Nishihara, Y.
%A Ha, D. H.
%D 1996
%I American Physical Society
%J Phys. Rev. B
%K imported
%N 17
%P 12018--12021
%R 10.1103/PhysRevB.54.12018
%T Stripe structure in the CuO$_2$ plane of perovskite superconductors
%V 54
%X The Cu-O pair-distribution function in a Bi2Sr2CaCu2O8+y superconductor
has been measured by polarized Cu K-edge extended x-ray-absorption
fine structure at T<Tc. The results show an anomalous long Cu-O (planar)
distance, 1.96 Å, assigned to distorted CuO2 stripes of width W intercalated
with undistorted stripes of width L. From the measurement of L=15±0.5
Å we have calculated the energies En of the bottom of the one-dimensional
subbands of the superlattice and found that the Fermi level EF is
tuned to a ‘‘shape resonance’’ EF-En<ħωD, where ωD is the Debye frequency,
giving the Tc amplification.
@article{Bianconi1996,
abstract = {The Cu-O pair-distribution function in a Bi2Sr2CaCu2O8+y superconductor
has been measured by polarized Cu K-edge extended x-ray-absorption
fine structure at T<Tc. The results show an anomalous long Cu-O (planar)
distance, 1.96 Å, assigned to distorted CuO2 stripes of width W intercalated
with undistorted stripes of width L. From the measurement of L=15±0.5
Å we have calculated the energies En of the bottom of the one-dimensional
subbands of the superlattice and found that the Fermi level EF is
tuned to a ‘‘shape resonance’’ EF-En<ħωD, where ωD is the Debye frequency,
giving the Tc amplification.},
added-at = {2010-11-06T00:14:39.000+0100},
author = {Bianconi, A. and Saini, N. L. and Rossetti, T. and Lanzara, A. and Perali, A. and Missori, M. and Oyanagi, H. and Yamaguchi, H. and Nishihara, Y. and Ha, D. H.},
biburl = {https://www.bibsonomy.org/bibtex/2f707a5bdacb000696c4a159477b7d04a/nplumb},
doi = {10.1103/PhysRevB.54.12018},
file = {:C\:\\Users\\Nick\\Documents\\Papers\\Bianconi et al. - Stripe structure in the CuO2 plane of perovskite superconductors.pdf:PDF},
interhash = {543dac69b51e63cd8962a8972fdbdf83},
intrahash = {f707a5bdacb000696c4a159477b7d04a},
journal = {Phys. Rev. B},
keywords = {imported},
month = Nov,
number = 17,
numpages = {3},
owner = {Nick},
pages = {12018--12021},
publisher = {American Physical Society},
timestamp = {2010-11-06T00:14:40.000+0100},
title = {Stripe structure in the CuO$_{2}$ plane of perovskite superconductors},
volume = 54,
year = 1996
}