Insulator-to-metal crossover near the edge of the superconducting dome in Nd1-xSrxNiO2

Yu Te Hsu, Bai Yang Wang, Maarten Berben, Danfeng Li, Kyuho Lee, Caitlin Duffy, Thom Ottenbros, Woo Jin Kim, Motoki Osada, Steffen Wiedmann, Harold Y. Hwang, Nigel E. Hussey

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


We report a systematic magnetotransport study of superconducting infinite-layer nickelate thin films Nd1-xSrxNiO2 with 0.15≤x≤0.225. By suppressing superconductivity with out-of-plane magnetic fields up to 37.5 T, we find that the normal state resistivity of Nd1-xSrxNiO2 is characterized by a crossover from a metallic T2 behavior to an insulating log(1/T) behavior for all x except x=0.225, at which the resistivity is predominantly metallic. The log(1/T) behavior is found to be robust against magnetic fields, inconsistent with scenarios involving localization or Kondo scattering, and points to an anomalous insulating state possibly driven by strong correlations. In the metallic state, we find no evidence for non-Fermi-liquid behavior arising from proximity to a putative quantum critical point located inside the superconducting dome.

Original languageEnglish
Article numberA103
JournalPhysical Review Research
Issue number4
Publication statusPublished - 2021 Dec
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


Dive into the research topics of 'Insulator-to-metal crossover near the edge of the superconducting dome in Nd1-xSrxNiO2'. Together they form a unique fingerprint.

Cite this