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Design of new superconducting materials, and point contact spectroscopy as a probe of strong electron correlations

2011/10/19 by L. H. Greene, Greene, Laura H., Hamood Z. Arham +5
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Iron-based superconductors research #Rare-earth and actinide compounds #Superconductivity (cond-mat.supr-con)

paper · pdf · doi:10.48550/arxiv.1110.4147

openalex publication_date 2011/10/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

At this centenary of the discovery of superconductivity, the design of new and more useful superconductors remains as enigmatic as ever. These materials play crucial roles both for fundamental science and applications, and they hold great promise in addressing our global energy challenge. The recent discovery of a new class of high-temperature superconductors has made the community more enthusiastic than ever about finding new superconductors. Historically, these discoveries were almost completely guided by serendipity, and now, researchers in the field have grown into an enthusiastic global network to find a way, together, to predictively design new superconductors. After a short history of discoveries of superconducting materials, we share our own guidelines for searching for high-temperature superconductors. Finally, we show how point contact spectroscopy (PCS) is used to detect strong correlations in the normal state with a focus on the strongly-correlated region in the normal state of the Fe-based superconductors, defining a new region in the phase diagram of Ba(Fe1-xCox)2As2.

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