Interfacial tuning of chiral magnetic interactions for large topological Hall effects in LaMnO3/SrIrO3 heterostructures

Elizabeth Skoropata; John Nichols; Jong Mok Ok; Rajesh V. Chopdeka; Eun Sang Choi; Ankur Rastogi; Changhee Sohn; Xiang Gao; Sangmoon Yoon; Thomas Farmer; Ryan D. TDesautel; Yongseong Choi; Daniel Haskel; John W. Freelan; Satoshi Okamoto; Matthew Brahlek; Ho Nyung Lee

doi:10.1126/sciadv.aaz3902

Interfacial tuning of chiral magnetic interactions for large topological Hall effects in LaMnO3/SrIrO3 heterostructures

Elizabeth Skoropata, John Nichols, Jong Mok Ok, Rajesh V. Chopdeka, Eun Sang Choi, Ankur Rastogi, Changhee Sohn, Xiang Gao, Sangmoon Yoon, Thomas Farmer, Ryan D. TDesautel, Yongseong Choi, Daniel Haskel, John W. Freelan, Satoshi Okamoto, Matthew Brahlek, Ho Nyung Lee

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53 Scopus citations

Abstract

Chiral interactions in magnetic systems can give rise to rich physics manifested, for example, as nontrivial spin textures. The foremost interaction responsible for chiral magnetism is the Dzyaloshinskii-Moriya interaction (DMI), resulting from inversion symmetry breaking in the presence of strong spin-orbit coupling. However, the atomistic origin of DMIs and their relationship to emergent electrodynamic phenomena, such as topological Hall effect (THE), remain unclear. Here, we investigate the role of interfacial DMIs in 3d-5d transition metal-oxide-based LaMnO3/SrIrO3 superlattices on THE from a chiral spin texture. By additively engineering the interfacial inversion symmetry with atomic-scale precision, we directly link the competition between interfacial collinear ferromagnetic interactions and DMIs to an enhanced THE. The ability to control the DMI and resulting THE points to a pathway for harnessing interfacial structures to maximize the density of chiral spin textures useful for developing high-density information storage and quantum magnets for quantum information science.

Original language	English
Article number	eaaz3902
Journal	Science Advances
Volume	6
Issue number	27
DOIs	https://doi.org/10.1126/sciadv.aaz3902
State	Published - Jul 2020

Funding

This work was supported by the U.S. Department of Energy (DOE), Basic Energy Sciences, Materials Sciences and Engineering Division. Use of the Advanced Photon Source and the Advanced Light Source, which are DOE Office of Science User Facilities, was supported by DOE's Office of Science under contracts DE-AC02-06CH11357 and DE-AC02-05CH11231, respectively. The Hall effect measurements in high magnetic fields were performed at the NHMFL, which is supported by NSF cooperative agreement no. DMR-1644779 and the state of Florida.

Funders	Funder number
National Science Foundation	DMR-1644779
U.S. Department of Energy
Office of Science	DE-AC02-05CH11231, DE-AC02-06CH11357
Basic Energy Sciences
Division of Materials Sciences and Engineering

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Skoropata, E., Nichols, J., Ok, J. M., Chopdeka, R. V., Choi, E. S., Rastogi, A., Sohn, C., Gao, X., Yoon, S., Farmer, T., TDesautel, R. D., Choi, Y., Haskel, D., Freelan, J. W., Okamoto, S., Brahlek, M., & Lee, H. N. (2020). Interfacial tuning of chiral magnetic interactions for large topological Hall effects in LaMnO3/SrIrO3 heterostructures. Science Advances, 6(27), Article eaaz3902. https://doi.org/10.1126/sciadv.aaz3902

@article{e3f4b4c4eb5d4bcdb4b7056da2492861,

title = "Interfacial tuning of chiral magnetic interactions for large topological Hall effects in LaMnO3/SrIrO3 heterostructures",

abstract = "Chiral interactions in magnetic systems can give rise to rich physics manifested, for example, as nontrivial spin textures. The foremost interaction responsible for chiral magnetism is the Dzyaloshinskii-Moriya interaction (DMI), resulting from inversion symmetry breaking in the presence of strong spin-orbit coupling. However, the atomistic origin of DMIs and their relationship to emergent electrodynamic phenomena, such as topological Hall effect (THE), remain unclear. Here, we investigate the role of interfacial DMIs in 3d-5d transition metal-oxide-based LaMnO3/SrIrO3 superlattices on THE from a chiral spin texture. By additively engineering the interfacial inversion symmetry with atomic-scale precision, we directly link the competition between interfacial collinear ferromagnetic interactions and DMIs to an enhanced THE. The ability to control the DMI and resulting THE points to a pathway for harnessing interfacial structures to maximize the density of chiral spin textures useful for developing high-density information storage and quantum magnets for quantum information science.",

author = "Elizabeth Skoropata and John Nichols and Ok, {Jong Mok} and Chopdeka, {Rajesh V.} and Choi, {Eun Sang} and Ankur Rastogi and Changhee Sohn and Xiang Gao and Sangmoon Yoon and Thomas Farmer and TDesautel, {Ryan D.} and Yongseong Choi and Daniel Haskel and Freelan, {John W.} and Satoshi Okamoto and Matthew Brahlek and Lee, {Ho Nyung}",

year = "2020",

month = jul,

doi = "10.1126/sciadv.aaz3902",

language = "English",

volume = "6",

journal = "Science Advances",

issn = "2375-2548",

publisher = "American Association for the Advancement of Science",

number = "27",

}

Skoropata, E, Nichols, J, Ok, JM, Chopdeka, RV, Choi, ES, Rastogi, A, Sohn, C, Gao, X, Yoon, S, Farmer, T, TDesautel, RD, Choi, Y, Haskel, D, Freelan, JW, Okamoto, S , Brahlek, M & Lee, HN 2020, 'Interfacial tuning of chiral magnetic interactions for large topological Hall effects in LaMnO3/SrIrO3 heterostructures', Science Advances, vol. 6, no. 27, eaaz3902. https://doi.org/10.1126/sciadv.aaz3902

TY - JOUR

T1 - Interfacial tuning of chiral magnetic interactions for large topological Hall effects in LaMnO3/SrIrO3 heterostructures

AU - Skoropata, Elizabeth

AU - Nichols, John

AU - Ok, Jong Mok

AU - Chopdeka, Rajesh V.

AU - Choi, Eun Sang

AU - Rastogi, Ankur

AU - Sohn, Changhee

AU - Gao, Xiang

AU - Yoon, Sangmoon

AU - Farmer, Thomas

AU - TDesautel, Ryan D.

AU - Choi, Yongseong

AU - Haskel, Daniel

AU - Freelan, John W.

AU - Okamoto, Satoshi

AU - Brahlek, Matthew

AU - Lee, Ho Nyung

PY - 2020/7

Y1 - 2020/7

N2 - Chiral interactions in magnetic systems can give rise to rich physics manifested, for example, as nontrivial spin textures. The foremost interaction responsible for chiral magnetism is the Dzyaloshinskii-Moriya interaction (DMI), resulting from inversion symmetry breaking in the presence of strong spin-orbit coupling. However, the atomistic origin of DMIs and their relationship to emergent electrodynamic phenomena, such as topological Hall effect (THE), remain unclear. Here, we investigate the role of interfacial DMIs in 3d-5d transition metal-oxide-based LaMnO3/SrIrO3 superlattices on THE from a chiral spin texture. By additively engineering the interfacial inversion symmetry with atomic-scale precision, we directly link the competition between interfacial collinear ferromagnetic interactions and DMIs to an enhanced THE. The ability to control the DMI and resulting THE points to a pathway for harnessing interfacial structures to maximize the density of chiral spin textures useful for developing high-density information storage and quantum magnets for quantum information science.

AB - Chiral interactions in magnetic systems can give rise to rich physics manifested, for example, as nontrivial spin textures. The foremost interaction responsible for chiral magnetism is the Dzyaloshinskii-Moriya interaction (DMI), resulting from inversion symmetry breaking in the presence of strong spin-orbit coupling. However, the atomistic origin of DMIs and their relationship to emergent electrodynamic phenomena, such as topological Hall effect (THE), remain unclear. Here, we investigate the role of interfacial DMIs in 3d-5d transition metal-oxide-based LaMnO3/SrIrO3 superlattices on THE from a chiral spin texture. By additively engineering the interfacial inversion symmetry with atomic-scale precision, we directly link the competition between interfacial collinear ferromagnetic interactions and DMIs to an enhanced THE. The ability to control the DMI and resulting THE points to a pathway for harnessing interfacial structures to maximize the density of chiral spin textures useful for developing high-density information storage and quantum magnets for quantum information science.

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VL - 6

JO - Science Advances

JF - Science Advances

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ER -

Interfacial tuning of chiral magnetic interactions for large topological Hall effects in LaMnO3/SrIrO3 heterostructures

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