Physics – Condensed Matter – Superconductivity
Scientific paper
2001-06-04
Physics
Condensed Matter
Superconductivity
4 pages, 5 figures
Scientific paper
The nanometer-scale gap inhomogeneity revealed by recent STM images of BSCCO surface suggests that the ``gap coherence length'' is of that order. Thus a robust pairing gap can develop despite the poorly screened Coulomb interaction. This can be taken as an evidence that the pairing in high $T_c$ materials occurs primarily in the neutral (spin) sector. We provide theoretical support for this point of view.
Han Jung Hoon
Lee Dung-Hai
Wang Qiang-Hua
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