Photoemission Response of Bi2sr2cacu2ox - the Normal-State Anisotropy Is Intrinsic
Angle-resolved, synchrotron-radiation photoemission and low-energy electron-diffraction studies of single-crystal Bi2Sr2CaCu2Ox high-temperature superconductors establish that the [100] and [010] directions exhibit quantitatively different structural and electronic properties. Specifically, there is a superlattice modulation in the [010] direction, with superlattice period between 4.7 and 5.2 times the period in the [100] direction. Accompanying this structural difference there is a marked difference in the intensity and amount of dispersion in the two directions.
WOS:A1993LQ98900088
1993
48
5
3534
3535
Ecole polytech fed lausanne,inst phys appl,ch-1015 lausanne,switzerland. Kelley, rj, univ wisconsin,dept phys,madison,wi 53706.
ISI Document Delivery No.: LQ989
REVIEWED