Superconducting Dome in Nd1-xSrxNiO2 Infinite Layer Films

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Bai Yang Wang
  • Kyuho Lee
  • Shannon P. Harvey
  • Motoki Osada
  • Berit H. Goodge
  • Lena F. Kourkoutis
  • Harold Y. Hwang

Detail(s)

Original languageEnglish
Article number027001
Journal / PublicationPhysical Review Letters
Volume125
Issue number2
Online published7 Jul 2020
Publication statusPublished - 10 Jul 2020
Externally publishedYes

Abstract

We report the phase diagram of Nd1-xSrxNiO2 infinite layer thin films grown on SrTiO3. A superconducting dome spanning 0.125<x<0.25 is found, remarkably similar to cuprates, albeit over a narrower doping window. However, while cuprate superconductivity is bounded by an insulator for underdoping and a metal for overdoping, here we observe weakly insulating behavior on either side of the dome. Furthermore, the normal state Hall coefficient is always small and proximate to a continuous zero crossing in doping and in temperature, in contrast to the ∼1/x dependence observed for cuprates. This suggests the presence of both electronlike and holelike bands, consistent with band structure calculations.

Citation Format(s)

Superconducting Dome in Nd1-xSrxNiO2 Infinite Layer Films. / Li, Danfeng; Wang, Bai Yang; Lee, Kyuho et al.
In: Physical Review Letters, Vol. 125, No. 2, 027001, 10.07.2020.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review