A Superconducting Praseodymium Nickelate with Infinite Layer Structure

Osada, Motoki; Wang, Bai Yang; Goodge, Berit H.; Lee, Kyuho; Yoon, Hyeok; Sakuma, Keita; Li, Danfeng; Miura, Masashi; Kourkoutis, Lena F.; Hwang, Harold Y.

doi:10.1021/acs.nanolett.0c01392

A Superconducting Praseodymium Nickelate with Infinite Layer Structure

Journal Article · Tue Jun 23 00:00:00 EDT 2020 · Nano Letters

DOI:https://doi.org/10.1021/acs.nanolett.0c01392· OSTI ID:1635664

^[1]; Wang, Bai Yang ^[2]; Goodge, Berit H. ^[3]; ^[4]; Yoon, Hyeok ^[4]; Sakuma, Keita ^[5]; ^[4]; Miura, Masashi ^[6]; ^[3]; Hwang, Harold Y. ^[4]

Stanford Univ., CA (United States); SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); SLAC/Stanford University
SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States); Cornell Univ., Ithaca, NY (United States)
Cornell Univ., Ithaca, NY (United States)
SLAC National Accelerator Lab., Menlo Park, CA (United States). Stanford Institute for Materials and Energy Science (SIMES); Stanford Univ., CA (United States)
Seikei Univ.,Tokyo (Japan)
Stanford Univ., CA (United States); Seikei Univ.,Tokyo (Japan)

A variety of nickel oxide compounds have long been studied for their manifestation of various correlated electron phenomena. Recently, superconductivity was observed in nanoscale infinite layer nickelate thin films of Nd_0.8Sr_0.2NiO₂, epitaxially stabilized on SrTiO₃ substrates via topotactic reduction from the perovskite precursor phase. In this paper, we present the synthesis and properties of PrNiO₂ thin films on SrTiO₃. Upon doping in Pr_0.8Sr_0.2NiO₂, we observe superconductivity with a transition temperature of 7–12 K and robust critical current density at 2 K of 334 kA/cm². These findings indicate that superconductivity in the infinite layer nickelates is relatively insensitive to the details of the rare earth 4f configuration. Furthermore, they motivate the exploration of a broader family of compounds based on two-dimensional NiO₂ planes, which will enable systematic investigation of the superconducting and normal state properties and their underlying mechanisms.

View Accepted Manuscript (DOE)

Research Organization:: SLAC/Stanford University

Sponsoring Organization:: Gordon and Betty Moore Foundation; Heiwa Nakajima Foundation; Japan Society for the Promotion of Science (JSPS); Kato Foundation for Promotion of Science; National Science Foundation (NSF); Takenaka Scholarship Foundation; US Air Force Office of Scientific Research (AFOSR); USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 1635664

Journal Information:: Nano Letters, Journal Name: Nano Letters Journal Issue: 8 Vol. 20; ISSN 1530-6984

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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