title: A-Axis--Oriented YBa2Cu3O7/PrBa2Cu3O7 Superlattices.
abstract: A modulated structure has been fabricated from high transition temperature superconductors where the individual CuO(2) planes are composed of alternating superconducting and insulating strips. This structure is made by growing a-axis-oriented YBa(2)Cu(3)O(7)/PrBa(2)Cu(3)O(7) superlattices by 90 degrees off-axis sputtering on (100)SrTiO(3) and (100)LaAlO(3) substrates. Superlattice modulation is observed to a modulation wavelength of 24 angstroms (12 angstroms-YBa(2)Cu(3)O(7)/12 angstroms-PrBa(2)Cu(3)O(7)), both by x-ray diffraction and by cross-sectional transmission electron microscopy. Rutherford backscattering spectroscopy indicates a high degree of crystalline perfection with a channeling minimum yield of 3 percent. Quasi-one-dimensional conductivity should be obtainable in these structures.
authors.forename: C B
authors.initials: CB
authors.lastname: Eom
authors.forename: A F
authors.initials: AF
authors.lastname: Marshall
authors.forename: J M
authors.initials: JM
authors.lastname: Triscone
authors.forename: B
authors.initials: B
authors.lastname: Wilkens
authors.forename: S S
authors.initials: SS
authors.lastname: Laderman
authors.forename: T H
authors.initials: TH
authors.lastname: Geballe