中国物理B ›› 2021, Vol. 30 ›› Issue (10): 107103-107103.doi: 10.1088/1674-1056/abf646

所属专题: SPECIAL TOPIC — Unconventional superconductivity

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Relevance of 3d multiplet structure in nickelate and cuprate superconductors

Mi Jiang(蒋密)   

  1. School of Physical Science and Technology, Soochow University, Suzhou 215006, China
  • 收稿日期:2021-01-26 修回日期:2021-02-07 接受日期:2021-04-09 发布日期:2021-09-26
  • 通讯作者: Mi Jiang E-mail:jiangmi@suda.edu.cn
  • 基金资助:
    Project supported by the startup fund from Soochow University and the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions.

Relevance of 3d multiplet structure in nickelate and cuprate superconductors

Mi Jiang(蒋密)   

  1. School of Physical Science and Technology, Soochow University, Suzhou 215006, China
  • Received:2021-01-26 Revised:2021-02-07 Accepted:2021-04-09 Published:2021-09-26
  • Contact: Mi Jiang E-mail:jiangmi@suda.edu.cn
  • Supported by:
    Project supported by the startup fund from Soochow University and the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions.

摘要: The recent discovery of superconductivity in doped rare-earth infinite-layer nickelates RNiO2, R=Nd, Pr as a new family of unconventional superconductors has inspired extensive research on their intriguing properties. One of the major motivation to explore the nickelate superconductors originated from their similarities with and differences from the cuprate superconductors, which have been extensively studied over the last decades but are still lack of the thorough understanding. In this short review, we summarized our recent investigation of the relevance of Ni/Cu-3d multiplet structure on the hole doped spin states in cuprate and recently discovered nickelate superconductors via an impurity model incorporating all the 3d orbitals. Further plausible explorations to be conducted are outlined as well. Our presented work provides an insightful framework for the investigation of the strongly correlated electronic systems in terms of the multiplet structure of transition metal compounds.

关键词: strongly correlated systems, cuprate superconductors, infinite-layer nickelates, multi-orbital Hubbard model

Abstract: The recent discovery of superconductivity in doped rare-earth infinite-layer nickelates RNiO2, R=Nd, Pr as a new family of unconventional superconductors has inspired extensive research on their intriguing properties. One of the major motivation to explore the nickelate superconductors originated from their similarities with and differences from the cuprate superconductors, which have been extensively studied over the last decades but are still lack of the thorough understanding. In this short review, we summarized our recent investigation of the relevance of Ni/Cu-3d multiplet structure on the hole doped spin states in cuprate and recently discovered nickelate superconductors via an impurity model incorporating all the 3d orbitals. Further plausible explorations to be conducted are outlined as well. Our presented work provides an insightful framework for the investigation of the strongly correlated electronic systems in terms of the multiplet structure of transition metal compounds.

Key words: strongly correlated systems, cuprate superconductors, infinite-layer nickelates, multi-orbital Hubbard model

中图分类号:  (Theories and models of many-electron systems)

  • 71.10.-w
71.27.+a (Strongly correlated electron systems; heavy fermions) 74.72.-h (Cuprate superconductors) 74.70.-b (Superconducting materials other than cuprates)