A superstructure in single-crystal YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7-δ</sub>
Tan Kemin; Hu Meisheng; Wang Yening; Tan Kemin; Inst. of Solid State Phys., Nanjing Univ., China; Hu Meisheng; Inst. of Solid State Phys., Nanjing Univ., China; Wang Yening; Inst. of Solid State Phys., Nanjing Univ., China
Журнал:
Journal of Physics: Condensed Matter
Дата:
1989-02-13
Аннотация:
A new form of superstructure with a square root 2*2 square root 2*1 supercell oriented at 45 degrees to the original unit-cell axes has been found in a YBa<sub>2</sub>Cu<sub>3</sub>O<sub>7- delta </sub> single crystals by means of electron diffraction and electron microscopy. It is suggested that this superstructure results from a substructure modulation.
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