Emerging superconductivity hidden beneath charge-transfer insulators
書誌事項
- 公開日
- 2013-07-26
- 資源種別
- journal article
- 権利情報
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- https://creativecommons.org/licenses/by/3.0/
- https://creativecommons.org/licenses/by/3.0/
- DOI
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- 10.1038/srep02235
- 公開者
- Springer Science and Business Media LLC
説明
<jats:title>Abstract</jats:title><jats:p>In many of today's most interesting materials, strong interactions prevail upon the magnetic moments, the electrons and the crystal lattice, forming strong links between these different aspects of the system. Particularly, in two-dimensional cuprates, where copper is either five- or six-fold coordinated, superconductivity is commonly induced by chemical doping which is deemed to be mandatory by destruction of long-range antiferromagnetic order of 3<jats:italic>d</jats:italic><jats:sup>9</jats:sup> Cu<jats:sup>2+</jats:sup> moments. Here we show that superconductivity can be induced in Pr<jats:sub>2</jats:sub>CuO<jats:sub>4</jats:sub>, where copper is four-fold coordinated. We induced this novel quantum state of Pr<jats:sub>2</jats:sub>CuO<jats:sub>4</jats:sub> by realizing pristine square-planar coordinated copper in the copper-oxygen planes, thus, resulting in critical superconducting temperatures even higher than by chemical doping. Our results demonstrate new degrees of freedom, i.e., coordination of copper, for the manipulation of magnetic and superconducting order parameters in quantum materials.</jats:p>
収録刊行物
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- Scientific Reports
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Scientific Reports 3 (1), 2235-, 2013-07-26
Springer Science and Business Media LLC
