Emergent Ferromagnetism in CaRuO3/CaMnO3 (111)-Oriented Superlattices

Kane, Margaret; Bhandari, Churna; Holtz, Megan E.; Balakrishnan, Purnima Parvathy; Grutter, Alexander J.; Fitzsimmons, Michael; Yang, Chao-Yao; Satpathy, Sashi; Paudyal, Durga; Suzuki, Yuri

doi:10.1021/acs.nanolett.3c04623

This content will become publicly available on Mon Feb 17 00:00:00 EST 2025

Title: Emergent Ferromagnetism in CaRuO₃/CaMnO₃ (111)-Oriented Superlattices

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Abstract

The boundary between CaRuO₃ and CaMnO₃ is an ideal test bed for emergent magnetic ground states stabilized through interfacial electron interactions. In this system, nominally antiferromagnetic and paramagnetic materials combine to yield interfacial ferromagnetism in CaMnO₃ due to electron leakage across the interface. In this work, we show that the crystal symmetry at the surface is a critical factor determining the nature of the interfacial interactions. Specifically, by growing CaRuO₃/CaMnO₃ heterostructures along the (111) instead of the (001) crystallographic axis, we achieve a 3-fold enhancement of the magnetization and involve the CaRuO₃ layers in the ferromagnetism, which now spans both constituent materials. Importantly, the stabilization of a net magnetic moment in CaRuO₃ through strain effects has been long-sought but never consistently achieved, and our observations demonstrate the importance of interface engineering in the development of new functional heterostructures.

Authors:

^[1];

^[2]; Holtz, Megan E. ^[3];

^[4];

^[4]; Fitzsimmons, Michael ^[5]; Yang, Chao-Yao ^[6]; Satpathy, Sashi ^[7]; Paudyal, Durga ^[2];

^[1]

Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials
Ames Lab., and Iowa State Univ., Ames, IA (United States)
Colorado School of Mines, Golden, CO (United States)
National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
National Yang Ming Chiao Tung University, Hsinchu City (Taiwan)
Univ. of Missouri, Columbia, MO (United States)

Publication Date:: Sat Feb 17 00:00:00 EST 2024

Research Org.:: Ames Laboratory (AMES), Ames, IA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities (SUF); National Science Foundation (NSF)

OSTI Identifier:: 2311076

Report Number(s):: IS-J-11,269
Journal ID: ISSN 1530-6984

Grant/Contract Number:: SC0008505; AC02-07CH11358; EECS1542152; DGE-1656518

Resource Type:: Accepted Manuscript

Journal Name:: Nano Letters

Additional Journal Information:: Journal Volume: 24; Journal Issue: 8; Journal ID: ISSN 1530-6984

Publisher:: American Chemical Society

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; emergent magnetism; complex oxides; superlattices; ruthenatess; manganites

Citation Formats


                    Kane, Margaret, Bhandari, Churna, Holtz, Megan E., Balakrishnan, Purnima Parvathy, Grutter, Alexander J., Fitzsimmons, Michael, Yang, Chao-Yao, Satpathy, Sashi, Paudyal, Durga, and Suzuki, Yuri. Emergent Ferromagnetism in CaRuO3/CaMnO3 (111)-Oriented Superlattices.  United States: N. p., 2024. 
Web.  doi:10.1021/acs.nanolett.3c04623.

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                    Kane, Margaret, Bhandari, Churna, Holtz, Megan E., Balakrishnan, Purnima Parvathy, Grutter, Alexander J., Fitzsimmons, Michael, Yang, Chao-Yao, Satpathy, Sashi, Paudyal, Durga, & Suzuki, Yuri. Emergent Ferromagnetism in CaRuO3/CaMnO3 (111)-Oriented Superlattices.  United States.  https://doi.org/10.1021/acs.nanolett.3c04623

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                    Kane, Margaret, Bhandari, Churna, Holtz, Megan E., Balakrishnan, Purnima Parvathy, Grutter, Alexander J., Fitzsimmons, Michael, Yang, Chao-Yao, Satpathy, Sashi, Paudyal, Durga, and Suzuki, Yuri. Sat .  
"Emergent Ferromagnetism in CaRuO3/CaMnO3 (111)-Oriented Superlattices".  United States.  https://doi.org/10.1021/acs.nanolett.3c04623.

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@article{osti_2311076,

  title        = {Emergent Ferromagnetism in CaRuO3/CaMnO3 (111)-Oriented Superlattices},

  author       = {Kane, Margaret and Bhandari, Churna and Holtz, Megan E. and Balakrishnan, Purnima Parvathy and Grutter, Alexander J. and Fitzsimmons, Michael and Yang, Chao-Yao and Satpathy, Sashi and Paudyal, Durga and Suzuki, Yuri},

  abstractNote = {The boundary between CaRuO3 and CaMnO3 is an ideal test bed for emergent magnetic ground states stabilized through interfacial electron interactions. In this system, nominally antiferromagnetic and paramagnetic materials combine to yield interfacial ferromagnetism in CaMnO3 due to electron leakage across the interface. In this work, we show that the crystal symmetry at the surface is a critical factor determining the nature of the interfacial interactions. Specifically, by growing CaRuO3/CaMnO3 heterostructures along the (111) instead of the (001) crystallographic axis, we achieve a 3-fold enhancement of the magnetization and involve the CaRuO3 layers in the ferromagnetism, which now spans both constituent materials. Importantly, the stabilization of a net magnetic moment in CaRuO3 through strain effects has been long-sought but never consistently achieved, and our observations demonstrate the importance of interface engineering in the development of new functional heterostructures.},

  doi          = {10.1021/acs.nanolett.3c04623},

  journal      = {Nano Letters},

  number       = 8,

  volume       = 24,

  place        = {United States},

  year         = {Sat Feb 17 00:00:00 EST 2024},

  month        = {Sat Feb 17 00:00:00 EST 2024}

}

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This content will become publicly available on Mon Feb 17 00:00:00 EST 2025

Title: Emergent Ferromagnetism in CaRuO3/CaMnO3 (111)-Oriented Superlattices

Abstract

Citation Formats

Title: Emergent Ferromagnetism in CaRuO₃/CaMnO₃ (111)-Oriented Superlattices