ISSN:
1572-9605
Schlagwort(e):
Superconductivity
;
EXAFS
;
superstructure
;
quantum wires
;
nonhomogeneity
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Elektrotechnik, Elektronik, Nachrichtentechnik
,
Physik
Notizen:
Abstract The structure of the stripes in Bi2Sr2CaCu22O8+y superconductor has been refined by polarized CuK-edge extended X-ray absorption fine structure (EXAFS). The distribution of Cu-O (planar) distances range from 1.87 Å to 1.96 Å. The results show that the in-plane CuO2 lattice distortions in the 1D modulation are large enough to form a potential barrier of widthW between the stripes of undistorted CuO2 lattice of widthL=15±0.5 Å. The calculations show that the maximum of the density of states formed by the second subband is tuned to the Fermi level.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00727276
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