Phase engineering of rare earth nickelates by digital synthesis

S. Middey; D. Meyers; Ranjan Kumar Patel; X. Liu; M. Kareev; P. Shafer; J. W. Kim; P. J. Ryan; J. Chakhalian

doi:10.1063/1.5045756

Phase engineering of rare earth nickelates by digital synthesis

S. Middey, D. Meyers, Ranjan Kumar Patel, X. Liu, M. Kareev, P. Shafer, J. W. Kim, P. J. Ryan, J. Chakhalian

School of Arts and Sciences, New High Energy Theory Center

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

We report on the electronic and magnetic properties of a series of [m EuNiO₃/p LaNiO₃] superlattices (thickness m and/or p = 1 unit cell) epitaxially grown on single crystalline NdGaO₃ substrates. The structural symmetry of these films has been investigated by the combination of in-situ reflection high energy electron diffraction and X-ray diffraction measurements. The metal-insulator transition and the magnetic transition temperatures of the short-period superlattices with m ≥ p are modified from the corresponding bulk Eu_1- _xLa_xNiO₃ (x=pm+p) composition. In contrast to the corresponding bulk doped compound with x = 0.67, the [1 EuNiO₃/2 LaNiO₃] film remains metallic down to at least 2 K without signs of electronic or magnetic transitions. These findings demonstrate the power of the digital synthesis approach to realize electronic and magnetic phases of perovskite nickelates, unattainable in bulk.

Original language	English (US)
Article number	081602
Journal	Applied Physics Letters
Volume	113
Issue number	8
DOIs	https://doi.org/10.1063/1.5045756
State	Published - Aug 20 2018

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.5045756

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title = "Phase engineering of rare earth nickelates by digital synthesis",

abstract = "We report on the electronic and magnetic properties of a series of [m EuNiO3/p LaNiO3] superlattices (thickness m and/or p = 1 unit cell) epitaxially grown on single crystalline NdGaO3 substrates. The structural symmetry of these films has been investigated by the combination of in-situ reflection high energy electron diffraction and X-ray diffraction measurements. The metal-insulator transition and the magnetic transition temperatures of the short-period superlattices with m ≥ p are modified from the corresponding bulk Eu1- xLaxNiO3 (x=pm+p) composition. In contrast to the corresponding bulk doped compound with x = 0.67, the [1 EuNiO3/2 LaNiO3] film remains metallic down to at least 2 K without signs of electronic or magnetic transitions. These findings demonstrate the power of the digital synthesis approach to realize electronic and magnetic phases of perovskite nickelates, unattainable in bulk.",

author = "S. Middey and D. Meyers and {Kumar Patel}, Ranjan and X. Liu and M. Kareev and P. Shafer and Kim, {J. W.} and Ryan, {P. J.} and J. Chakhalian",

note = "Funding Information: S.M. was supported by IISc start up grant and ISRO-IISc Space Technology Cell. D.M. was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Early Career Award Program under Award No. 1047478. X.L. acknowledges the support of DE-SC 00012375 grant for synchrotron work. J.C. was supported by the Gordon and Betty Moore Foundation EPiQS Initiative through Grant No. GBMF4534. S.M. also acknowledges the support of EPiQS Initiative No. GBMF4534 for sponsoring a trip to Rutgers University. This research used resources of the Advanced Photon Source, a U.S. Department of Energy Office of Science User Facility operated by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. This research used resources of the Advanced Light Source, which is a Department of Energy Office of Science User Facility under Contract No. DE-AC02-05CH11231. Publisher Copyright: {\textcopyright} 2018 Author(s).",

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doi = "10.1063/1.5045756",

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AU - Middey, S.

AU - Meyers, D.

AU - Kumar Patel, Ranjan

AU - Liu, X.

AU - Kareev, M.

AU - Shafer, P.

AU - Kim, J. W.

AU - Ryan, P. J.

AU - Chakhalian, J.

N1 - Funding Information: S.M. was supported by IISc start up grant and ISRO-IISc Space Technology Cell. D.M. was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, Early Career Award Program under Award No. 1047478. X.L. acknowledges the support of DE-SC 00012375 grant for synchrotron work. J.C. was supported by the Gordon and Betty Moore Foundation EPiQS Initiative through Grant No. GBMF4534. S.M. also acknowledges the support of EPiQS Initiative No. GBMF4534 for sponsoring a trip to Rutgers University. This research used resources of the Advanced Photon Source, a U.S. Department of Energy Office of Science User Facility operated by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. This research used resources of the Advanced Light Source, which is a Department of Energy Office of Science User Facility under Contract No. DE-AC02-05CH11231. Publisher Copyright: © 2018 Author(s).

PY - 2018/8/20

Y1 - 2018/8/20

N2 - We report on the electronic and magnetic properties of a series of [m EuNiO3/p LaNiO3] superlattices (thickness m and/or p = 1 unit cell) epitaxially grown on single crystalline NdGaO3 substrates. The structural symmetry of these films has been investigated by the combination of in-situ reflection high energy electron diffraction and X-ray diffraction measurements. The metal-insulator transition and the magnetic transition temperatures of the short-period superlattices with m ≥ p are modified from the corresponding bulk Eu1- xLaxNiO3 (x=pm+p) composition. In contrast to the corresponding bulk doped compound with x = 0.67, the [1 EuNiO3/2 LaNiO3] film remains metallic down to at least 2 K without signs of electronic or magnetic transitions. These findings demonstrate the power of the digital synthesis approach to realize electronic and magnetic phases of perovskite nickelates, unattainable in bulk.

AB - We report on the electronic and magnetic properties of a series of [m EuNiO3/p LaNiO3] superlattices (thickness m and/or p = 1 unit cell) epitaxially grown on single crystalline NdGaO3 substrates. The structural symmetry of these films has been investigated by the combination of in-situ reflection high energy electron diffraction and X-ray diffraction measurements. The metal-insulator transition and the magnetic transition temperatures of the short-period superlattices with m ≥ p are modified from the corresponding bulk Eu1- xLaxNiO3 (x=pm+p) composition. In contrast to the corresponding bulk doped compound with x = 0.67, the [1 EuNiO3/2 LaNiO3] film remains metallic down to at least 2 K without signs of electronic or magnetic transitions. These findings demonstrate the power of the digital synthesis approach to realize electronic and magnetic phases of perovskite nickelates, unattainable in bulk.

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ER -

Phase engineering of rare earth nickelates by digital synthesis

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