| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1518128 | Journal of Physics and Chemistry of Solids | 2008 | 5 Pages |
Abstract
We performed STM/STS measurements on superconducting Bi2212 and La-Bi2201 in order to study the nondispersive two-dimensional (2D) electronic superstructure, namely the so-called checkerboard. The nondispersive checkerboard clearly appears within the pairing gap in both systems, although the period is different between Bi2212 (∼4a×4a∼4a×4a) and La-Bi2201 (∼5a×5a∼5a×5a). We point out that the nondispersive checkerboard originates in hole-pairs and/or quasiparticles around the antinodes of the d-wave gap, and interrelates with the spatially inhomogeneous pairing gap.
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Authors
M. Ido, T. Yoneyama, Y.H. Liu, Y. Takano, N. Momono, M. Oda,