Comment on Visualization of the interplay between high-temperature superconductivity, the pseudogap and impurity resonances

Details Comment on Visualization of the interplay between high-temperature superconductivity, the pseudogap and impurity resonances Comment on Visualization of the interplay between high-temperature superconductivity, the pseudogap and impurity resonances

2008-03-12

arxiv.org/abs/0803.1864v1

Physics

Condensed Matter

Superconductivity

Scientific paper

In a recent letter, Chatterjee et al. (Nature Phys. 4, 108 (2008)) reported tunnelling data obtained below and above the critical temperature (Tc = 15 K) by STM in overdoped Bi2-yPbySr2CuO6+x (Bi2201) and some interpretations of the data1. The main experimental findings of their work are observations of native-impurity resonances which coexist spatially with the superconducting (SC) gap below Tc and survive unchanged on warming through Tc. No doubts, the data in the letter are an important piece of information for assembling the high-Tc SC jigsaw puzzle; however, there are inaccuracies in the discussion. In addition, I propose another interpretation of the data.

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