Electrical Control of Structural and Physical Properties via Strong Spin-Orbit Interactions in Sr2IrO4

Cao, Gang; Terzic, J.; Zhao, H. D.; Zheng, H.; De Long, L. E.; Riseborough, Peter S.

doi:10.1103/physrevlett.120.017201

Title: Electrical Control of Structural and Physical Properties via Strong Spin-Orbit Interactions in ${Sr}_{2} {IrO}_{4}$

Journal Article · Thu Jan 04 00:00:00 EST 2018 · Physical Review Letters

DOI:https://doi.org/10.1103/physrevlett.120.017201· OSTI ID:1511840

Cao, Gang ^[1]; Terzic, J. ^[1]; Zhao, H. D. ^[1]; Zheng, H. ^[1]; De Long, L. E. ^[2]; Riseborough, Peter S. ^[3]

Univ. of Colorado, Boulder, CO (United States)
Univ. of Kentucky, Lexington, KY (United States)
Temple Univ., Philadelphia, PA (United States)

Electrical control of structural and physical properties is a long-sought, but elusive goal of contemporary science and technology. We propose that a combination of strong spin-orbit interactions (SOI) and a canted antiferromagnetic Mott state is sufficient to attain that goal. The antiferromagnetic insulator Sr₂IrO₄ provides a model system in which strong SOI lock canted Ir magnetic moments to IrO6 octahedra, causing them to rigidly rotate together. A novel coupling between an applied electrical current and the canting angle reduces the N´eel temperature and drives a large, nonlinear lattice expansion that closely tracks the magnetization, increases the electron mobility, and precipitates a unique resistive switching effect. Our studies open new avenues for understanding fundamental physics driven by strong SOI in condensed matter, and provide a new paradigm for functional materials and devices.

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Research Organization:: Temple Univ., Philadelphia, PA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Science Foundation (NSF)

Grant/Contract Number:: FG02-01ER45872; DMR-1712101; DMR-1506979

OSTI ID:: 1511840

Alternate ID(s):: OSTI ID: 1415672

Journal Information:: Physical Review Letters, Vol. 120, Issue 1; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 30 works

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Anomalous magnetoresistance due to longitudinal spin fluctuations in a Jeff = 1/2 Mott semiconductor Hao, Lin; Wang, Zhentao; Yang, Junyi Nature Communications, Vol. 10, Issue 1 https://doi.org/10.1038/s41467-019-13271-6	journal	November 2019
Lattice frustration in spin-orbit Mott insulator Sr3Ir2O7 at high pressure Zhang, Jianbo; Yan, Dayu; Yesudhas, Sorb npj Quantum Materials, Vol. 4, Issue 1 https://doi.org/10.1038/s41535-019-0162-3	journal	May 2019
Spin–lattice and electron–phonon coupling in 3d/5d hybrid Sr3NiIrO6 O’Neal, Kenneth R.; Paul, Arpita; al-Wahish, Amal npj Quantum Materials, Vol. 4, Issue 1 https://doi.org/10.1038/s41535-019-0184-x	journal	August 2019
Resistive switching in tunnel junctions with a single-crystal La ₂ NiO ₄ electrode Shen, Shida; Williamson, Morgan; Cao, Gang Journal of Physics D: Applied Physics, Vol. 53, Issue 7 https://doi.org/10.1088/1361-6463/ab5c2e	journal	December 2019
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Enhanced insulating behavior in the Ir-vacant Sr ₂ Ir _{1– x} O ₄ system dominated by the local structure distortion Cheng, Jie; Dong, Peng; Li, Bin Journal of Synchrotron Radiation, Vol. 25, Issue 4 https://doi.org/10.1107/s1600577518005799	journal	May 2018
Spin-lattice and electron-phonon coupling in 3$d$/5$d$ hybrid Sr$_3$NiIrO$_6$ O'Neal, Kenneth R.; Paul, Arpita; al-Wahish, Amal arXiv https://doi.org/10.48550/arxiv.1907.09392	text	January 2019
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Title: Electrical Control of Structural and Physical Properties via Strong Spin-Orbit Interactions in Sr 2 IrO 4

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