Tunneling Studies of Pseudogaps: a Comment
R.S. Markiewicz, C. Kusko (Northeastern University, Boston)
TL;DR
This paper analyzes tunneling data of pseudogaps in a cuprate superconductor, proposing a model where the pseudogap results from competition between superconductivity and a density wave, challenging the fluctuation-based interpretation.
Contribution
It introduces a competing density wave model to interpret tunneling pseudogap data, offering an alternative to fluctuation-based explanations.
Findings
Pseudogaps may arise from density wave competition rather than superconducting fluctuations.
Tunneling data can be explained by a simplified striped phase model.
The analysis challenges the conventional association of pseudogaps with superconducting fluctuations.
Abstract
Recent tunneling observations of a pseudogap in Bi_2Sr_2CaCu_2O_{8+delta} are not necessarily evidence that the pseudogap is associated with superconducting fluctuations. The data are here analyzed as a competition between superconductivity and a density wave (taken as a simplified model for a striped phase).
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Taxonomy
TopicsPhysics of Superconductivity and Magnetism · Magnetic properties of thin films · Superconducting Materials and Applications