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Article: Unified Phase Diagram for Iron-Based Superconductors

TitleUnified Phase Diagram for Iron-Based Superconductors
Authors
Issue Date2017
PublisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/prl/
Citation
Physical Review Letters, 2017, v. 119 n. 15, article no. 157001 How to Cite?
Abstract© 2017 American Physical Society. High-temperature superconductivity is closely adjacent to a long-range antiferromagnet, which is called a parent compound. In cuprates, all parent compounds are alike and carrier doping leads to superconductivity, so a unified phase diagram can be drawn. However, the properties of parent compounds for iron-based superconductors show significant diversity and both carrier and isovalent dopings can cause superconductivity, which casts doubt on the idea that there exists a unified phase diagram for them. Here we show that the ordered moments in a variety of iron pnictides are inversely proportional to the effective Curie constants of their nematic susceptibility. This unexpected scaling behavior suggests that the magnetic ground states of iron pnictides can be achieved by tuning the strength of nematic fluctuations. Therefore, a unified phase diagram can be established where superconductivity emerges from a hypothetical parent compound with a large ordered moment but weak nematic fluctuations, which suggests that iron-based superconductors are strongly correlated electron systems.
Persistent Identifierhttp://hdl.handle.net/10722/268657
ISSN
2017 Impact Factor: 8.839
2015 SCImago Journal Rankings: 3.731

 

DC FieldValueLanguage
dc.contributor.authorGu, Yanhong-
dc.contributor.authorLiu, Zhaoyu-
dc.contributor.authorXie, Tao-
dc.contributor.authorZhang, Wenliang-
dc.contributor.authorGong, Dongliang-
dc.contributor.authorHu, Ding-
dc.contributor.authorMa, Xiaoyan-
dc.contributor.authorLi, Chunhong-
dc.contributor.authorZhao, Lingxiao-
dc.contributor.authorLin, Lifang-
dc.contributor.authorXu, Zhuang-
dc.contributor.authorTan, Guotai-
dc.contributor.authorChen, Genfu-
dc.contributor.authorMeng, Zi Yang-
dc.contributor.authorYang, Yi Feng-
dc.contributor.authorLuo, Huiqian-
dc.contributor.authorLi, Shiliang-
dc.date.accessioned2019-03-25T08:00:20Z-
dc.date.available2019-03-25T08:00:20Z-
dc.date.issued2017-
dc.identifier.citationPhysical Review Letters, 2017, v. 119 n. 15, article no. 157001-
dc.identifier.issn0031-9007-
dc.identifier.urihttp://hdl.handle.net/10722/268657-
dc.description.abstract© 2017 American Physical Society. High-temperature superconductivity is closely adjacent to a long-range antiferromagnet, which is called a parent compound. In cuprates, all parent compounds are alike and carrier doping leads to superconductivity, so a unified phase diagram can be drawn. However, the properties of parent compounds for iron-based superconductors show significant diversity and both carrier and isovalent dopings can cause superconductivity, which casts doubt on the idea that there exists a unified phase diagram for them. Here we show that the ordered moments in a variety of iron pnictides are inversely proportional to the effective Curie constants of their nematic susceptibility. This unexpected scaling behavior suggests that the magnetic ground states of iron pnictides can be achieved by tuning the strength of nematic fluctuations. Therefore, a unified phase diagram can be established where superconductivity emerges from a hypothetical parent compound with a large ordered moment but weak nematic fluctuations, which suggests that iron-based superconductors are strongly correlated electron systems.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/prl/-
dc.relation.ispartofPhysical Review Letters-
dc.titleUnified Phase Diagram for Iron-Based Superconductors-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1103/PhysRevLett.119.157001-
dc.identifier.scopuseid_2-s2.0-85031326396-
dc.identifier.volume119-
dc.identifier.issue15-
dc.identifier.spagearticle no. 157001-
dc.identifier.epagearticle no. 157001-
dc.identifier.eissn1079-7114-

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