@article{a8455570fe6049d5a4bc03717d3d38f0,
title = "Insulator-to-metal crossover near the edge of the superconducting dome in Nd1-xSrxNiO2",
abstract = "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.",
author = "Hsu, {Yu Te} and Wang, {Bai Yang} and Maarten Berben and Danfeng Li and Kyuho Lee and Caitlin Duffy and Thom Ottenbros and Kim, {Woo Jin} and Motoki Osada and Steffen Wiedmann and Hwang, {Harold Y.} and Hussey, {Nigel E.}",
note = "Funding Information: We acknowledge the support of the HFML-RU/NWO, a member of the European Magnetic Field Laboratory (EMFL). This work was supported by the Netherlands Organisation for Scientific Research (NWO) Grant No. 16METL01 “ Strange Metals” and the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (Grant Agreement No. 835279-Catch-22). The work at SLAC/Stanford is supported by the the U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, under Contract No. DE-AC02-76SF00515, and the Gordon and Betty Moore Foundation's Emergent Phenomena in Quantum Systems Initiative through Grant No. GBMF9072 (synthesis equipment). Publisher Copyright: {\textcopyright} 2021 authors. Published by the American Physical Society.",
year = "2021",
month = dec,
doi = "10.1103/PhysRevResearch.3.L042015",
language = "English",
volume = "3",
journal = "Physical Review Research",
issn = "2643-1564",
publisher = "American Physical Society",
number = "4",
}