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Robust <i>d<sub>x<sup>2</sup>−y<sup>2 </sup></sub></i>wave superconductivity of infinite-layer nickelates

ORAL

Abstract

Motivated by the recent observation of superconductivity in strontium doped NdNiO2, we study the superconducting instabilities in this system from various vantage points. Starting with first principles calculations, we construct two distinct tight-binding models, a simpler single-orbital as well as a three-orbital model, both of which capture the key low energy degrees of freedom to varying degree of accuracy. We study superconductivity in both models using the random phase approximation (RPA). We then analyze the problem at stronger coupling, and study the dominant pairing instability in the associated t-J model limits. In all instances, the dominant pairing tendency is in the dx2−y2 channel, analogous to the cuprate superconductors.

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Presenters

  • Tilman Schwemmer

    Institute for Theoretical Physics, University of Wuerzburg, Institut für Theoretische Physik und Astrophysik, Universität Würzburg

Authors

  • Xianxin Wu

    Institute for Theoretical Physics, University of Wuerzburg, Institut für Theoretische Physik und Astrophysik, Universität Würzburg, Physics department, Pennsylvania State University, University of Wurzburg, Institut für Theoretische Physik und Astrophysik, University of Würzburg

  • Domenico Di Sante

    University of Wurzburg, University of Wuerzburg (Germany), Institut für Theoretische Physik und Astrophysik, Universität Würzburg, Institut für Theoretische Physik und Astrophysik, University of Würzburg

  • Tilman Schwemmer

    Institute for Theoretical Physics, University of Wuerzburg, Institut für Theoretische Physik und Astrophysik, Universität Würzburg

  • Werner R Hanke

    Institute for Theoretical Physics, University of Wuerzburg, Institut für Theoretische Physik und Astrophysik, Universität Würzburg, Institut für Theoretische Physik und Astrophysik, University of Würzburg, Universität Würzburg, Germany

  • Harold Hwang

    Institute for Materials and Energy Sciences, Stanford University, Stanford University, Department of Applied Physics, Stanford University, Applied Physics, Stanford University, SIMES, SLAC, Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, Menlo Park, CA 94025, USA, SLAC National Accelerator Lab., Physics, Stanford University, Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory

  • Srinivas Raghu

    Institute for Materials and Energy Sciences, Stanford University, Stanford Univ, Stanford University, Stanford

  • Ronny Thomale

    University of Wurzburg, Institute for Theoretical Physics, University of Wuerzburg, Theoretical physics I, University of Wuerzburg, University of Wuerzburg, Institut für Theoretische Physik und Astrophysik, Universität Würzburg, Physics department, University of Wuerzburg, Institut für Theoretische Physik und Astrophysik, University of Würzburg, Institute for Theoretical Physics and Astrophysics, University of Wurzburg