From a single-band metal to a high-temperature superconductor via two thermal phase transitions (Supporting Material)

Details From a single-band metal to a high-temperature superconductor via two thermal phase transitions (Supporting Material) From a single-band metal to a high-temperature superconductor via two thermal phase transitions (Supporting Material)

2011-03-11

arxiv.org/abs/1103.2363v1

Science 331, 1579-1583 (2011)

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1126/science.1198415

In this supporting material for the main paper (the preceding submission), we show, in addition to the related information for the experiments, additional discussion that cannot fit in the main paper (due to the space constraint). It includes further discussion about our experimental observations, wider implications of our main findings with various reported candidates for the pseudogap order, and a simple mean-field argument that favors interpretations based on a finite-Q order (density wave) for the pseudogap seen by ARPES (whether "the pseudogap order" is a single order or contains multiple ingredients, is an independent, open issue). We also include a detailed simulation section, in which we model different candidates (various density wave/nematic order) for the pseudogap order in simple forms using a mean-field approach, and discuss their partial success as well as limitations in describing the experimental observations. These simulations are based on a tight-binding model with parameters fitted globally (and reasonably well) to the experimental band dispersions (by tracking the maximum of the energy distribution curve), which could be useful for further theoretical explorations on this issue.

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