Antiferromagnetic Metal Phase in an Electron-Doped Rare-Earth Nickelate

Published

April 1, 2023

Author(s)

Qi Song, Spencer Doyle, Grace Pan, Ismail El Baggari, Dan Segedin, Denisse Cordova Carrizales, Johanna Nordlander, Christian Tzschaschel, James Ehrets, Zubia Hasan, Hesham El-Sherif, Jyoti Krishna, Chase Hanson, Harrison LaBollita, Aaron Bostwick, Chris Jozwiak, Eli Rotenberg, Su-Yang Xu, Alessandra Lanzara, Alpha N'Diaye, Colin Heikes, Yaohua Liu, Hanjong Paik, Charles Brooks, Betul Pamuk, John Heron, Padraic Shafer, William D. Ratcliff, Antia Botana, Luca Moreschini, Julia A. Mundy

Abstract

Long viewed as passive elements, antiferromagnetic materials emerged as promising candidates for spintronic devices due to their insensitivity to external fields and potential for high-speed switching. Recent work in spin orbitronics has identified ways to electrically control and probe the spins in metallic antiferromagnets, with particularly novel mechanisms present in noncollinear or noncentrosymmetric spin structures. Here we begin with a well characterized noncollinear antiferromagnet, the rare earth nickelate NdNiO3. In this compound, the onset of antiferromagnetic ordering is concomitant with a transition to an insulating state. We find that for low electron doping, however, the noncollinear magnetic order on the nickel site is preserved while electronically a new metallic phase is induced. We show that this new metallic phase has a distinctive fermiology, consistent with an electronic reconstruction driven by charge ordering. Furthermore, we demonstrate the ability to write to and read from the spin structure via a large zero-field planar Hall effect. Our results expand the already rich phase diagram of the rare-earth nickelates and open the door to creative spintronics applications in this family of correlated oxides.

Citation

Nature Physics

Volume

19

Issue

4

Pub Type

Journals

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Keywords

metal, neutron, magnetism

Citation

Song, Q. , Doyle, S. , Pan, G. , El Baggari, I. , Segedin, D. , Cordova Carrizales, D. , Nordlander, J. , Tzschaschel, C. , Ehrets, J. , Hasan, Z. , El-Sherif, H. , Krishna, J. , Hanson, C. , LaBollita, H. , Bostwick, A. , Jozwiak, C. , Rotenberg, E. , Xu, S. , Lanzara, A. , N'Diaye, A. , Heikes, C. , Liu, Y. , Paik, H. , Brooks, C. , Pamuk, B. , Heron, J. , Shafer, P. , Ratcliff, W. , Botana, A. , Moreschini, L. and Mundy, J. (2023), Antiferromagnetic Metal Phase in an Electron-Doped Rare-Earth Nickelate, Nature Physics, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=933531 (Accessed December 3, 2024)