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Title: Direct Evidence of the Competing Nature between Electronic and Lattice Breathing Order in Rare-Earth Nickelates

Abstract

Correlated electrons give rise to both exotic electronic and magnetic properties in rare-earth nickelates. IN this research, we introduce evidence of the interfacial coupling between two nickelate systems, EuNiO 3 (ENO) and LaNiO 3 (LNO), with different electronic and magnetic properties but with compatible structural registry giving rise to an electrostructural transition, unobserved in each constituent. Nominally, LNO remains in a paramagnetic-metallic R 3 ¯ c phase while orthorhombic ENO undergoes antiferromagnetic and insulating transitions. However, the ENO/LNO heterostructure displays a uniform rotational symmetry set by an entwined interface. This leads to an anomalous reduction of bond disproportionation in the ENO layer through the metal to insulator transition and concomitantly charge disproportionation opens the gap accompanied by antiferromagnetic ordering. Our findings resolve a long-standing question in the physics of rare-earth nickelates, herein demonstrating that charge and bond disproportionation are competing mechanisms for the charge localization process in the rare-earth nickelate system.

Authors:
 [1]; ORCiD logo [1]; ORCiD logo [2];  [3];  [4]; ORCiD logo [5];  [6];  [7]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
  2. Indian Inst. of Technology (IIT), Bangalore (India)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.; Oklahoma State Univ., Stillwater, OK (United States)
  4. Rutgers Univ., Piscataway, NJ (United States)
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  6. Univ. of Illinois, Chicago, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division
  7. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS); Dublin City Univ. (Ireland)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division; Gordon and Betty Moore Foundation (GBMF); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
OSTI Identifier:
1607863
Alternate Identifier(s):
OSTI ID: 1606587; OSTI ID: 1775371
Grant/Contract Number:  
AC02-06CH11357; AC02-05CH11231; GBMF4534
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 124; Journal Issue: 12; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Kim, Jong-Woo, Choi, Yongseong, Middey, S., Meyers, D., Chakhalian, J., Shafer, Padraic, Park, H., and Ryan, Philip J. Direct Evidence of the Competing Nature between Electronic and Lattice Breathing Order in Rare-Earth Nickelates. United States: N. p., 2020. Web. doi:10.1103/PhysRevLett.124.127601.
Kim, Jong-Woo, Choi, Yongseong, Middey, S., Meyers, D., Chakhalian, J., Shafer, Padraic, Park, H., & Ryan, Philip J. Direct Evidence of the Competing Nature between Electronic and Lattice Breathing Order in Rare-Earth Nickelates. United States. doi:https://doi.org/10.1103/PhysRevLett.124.127601
Kim, Jong-Woo, Choi, Yongseong, Middey, S., Meyers, D., Chakhalian, J., Shafer, Padraic, Park, H., and Ryan, Philip J. Thu . "Direct Evidence of the Competing Nature between Electronic and Lattice Breathing Order in Rare-Earth Nickelates". United States. doi:https://doi.org/10.1103/PhysRevLett.124.127601. https://www.osti.gov/servlets/purl/1607863.
@article{osti_1607863,
title = {Direct Evidence of the Competing Nature between Electronic and Lattice Breathing Order in Rare-Earth Nickelates},
author = {Kim, Jong-Woo and Choi, Yongseong and Middey, S. and Meyers, D. and Chakhalian, J. and Shafer, Padraic and Park, H. and Ryan, Philip J.},
abstractNote = {Correlated electrons give rise to both exotic electronic and magnetic properties in rare-earth nickelates. IN this research, we introduce evidence of the interfacial coupling between two nickelate systems, EuNiO3 (ENO) and LaNiO3 (LNO), with different electronic and magnetic properties but with compatible structural registry giving rise to an electrostructural transition, unobserved in each constituent. Nominally, LNO remains in a paramagnetic-metallic R3¯c phase while orthorhombic ENO undergoes antiferromagnetic and insulating transitions. However, the ENO/LNO heterostructure displays a uniform rotational symmetry set by an entwined interface. This leads to an anomalous reduction of bond disproportionation in the ENO layer through the metal to insulator transition and concomitantly charge disproportionation opens the gap accompanied by antiferromagnetic ordering. Our findings resolve a long-standing question in the physics of rare-earth nickelates, herein demonstrating that charge and bond disproportionation are competing mechanisms for the charge localization process in the rare-earth nickelate system.},
doi = {10.1103/PhysRevLett.124.127601},
journal = {Physical Review Letters},
number = 12,
volume = 124,
place = {United States},
year = {2020},
month = {3}
}

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