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首页> 外文期刊>Physical review >SrRuO_3-SrTiO_3 heterostructure as a possible platform for studying unconventional superconductivity in Sr_2RuO_4
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SrRuO_3-SrTiO_3 heterostructure as a possible platform for studying unconventional superconductivity in Sr_2RuO_4

机译：SRRUO_3-SRTIO_3异质结构作为在SR_2RUO_4中研究非传统超导的可能平台

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摘要

There is intense controversy around the unconventional superconductivity in strontium ruthenate, where the various theoretical and experimental studies suggest diverse and mutually exclusive pairing symmetries. Currently, the investigation is solely focused on only one material, Sr_2RuO_4, and the field suffers from the lack of comparison targets. Here, employing a density-functional-theory-based analysis, we show that the heterostructure composed of SrRuO_3 and SrTiO_3 is endowed with all the key characteristics of Sr_2RuO_4, and. in principle, can host superconductivity. Furthermore, we show that competing magnetic phases and associated frustration, naturally affecting the superconducting slate, can be tuned by epitaxial strain engineering. This system thus offers an excellent platform for gaining more insight into superconductivity in ruthenates.
机译：锶钌酸盐的非传统超导围绕着强烈的争论，各种理论和实验研究表明各种和相互排斥的配对对称。目前，调查仅专注于一种材料，SR_2RUO_4，该领域遭受缺乏比较目标。这里，采用密度官能理论的分析，我们表明由SRRUO_3和SRTIO_3组成的异质结构赋予SR_2RUO_4的所有关键特性。原则上，可以举办超导性。此外，我们表明，可以通过外延应变工程来调整竞争磁相和自然影响超导板岩的竞争措施。因此，该系统提供了一个优异的平台，用于在钌酸盐中获得更多洞察超导性。

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  • 来源
    《Physical review》 |2020年第22期|220502.1-220502.6|共6页
  • 作者

    Bongjae Kim; Sergii Khmelevskyi; Cesare Franchini; I. I. Mazin; Kyoo Kim;

  • 作者单位

    Department of Physics Kunsan National University Gunsan 54150 Korea MPPHC-CPM Max Planck POSTECH/Korea Research Initiative Pohang 37673 Korea;

    Center for Computational Materials Science Institute for Applied Physics Vienna University of Technology Wiedner Hauptstrasse 8-10 A-1040 Vienna Austria;

    Faculty of Physics and Center for Computational Materials Science University of Vienna A-1090 Vienna Austria Dipartimento di Fisica e Astronomia Universita di Bologna I-40127 Bologna Italy;

    Code 6393 Naval Research Laboratory Washington DC 20375 USA Quantum Materials Center George Mason University Fairfax Virginia 22030 USA;

    MPPHC-CPM Max Planck POSTECH/Korea Research Initiative Pohang 37673 Korea Department of Physics Pohang University of Science and Technology Pohang 37673 Korea Korea Atomic Energy Research Institute (KAERI) 111 Daedeok-daero Daejeon 34057 Korea;

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