New modulation structures observed in Bi2.13Sr1.87CuO6+δ superconductors

• 来源期刊: 同步辐射装置用户科技论文集
• 学科: 物理学
• 关键词: 超导体 调制结构 实验观测
• 年，卷（期）: 1999,（1）
• 页码范围: 274-277
• 页数: 4页
• 分类号: O511

摘要

A new two-dimensional structure modulation along c-and b-axes has been discovered in superconducting single crystals of Bi2.13Sr1.87CuO6+δ(Bi2201)by x-ray scattering.Such modulation structure does not exist in non-superconducting Bi2201 single crystals.But instead lattice distortions are observed in the a-b-plane.This phenomenon may indicate that both strain relaxation and charge modulation in the a-b-plane are important to the occurrence of superconductivity in the copper oxides.