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Gate-tunable giant nonreciprocal charge transport in noncentrosymmetric oxide interfaces

Author

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  • Daeseong Choe

    (Ulsan National Institute of Science and Technology)

  • Mi-Jin Jin

    (Ulsan National Institute of Science and Technology)

  • Shin-Ik Kim

    (Korea Institute of Science and Technology)

  • Hyung-Jin Choi

    (Korea Institute of Science and Technology)

  • Junhyeon Jo

    (Ulsan National Institute of Science and Technology)

  • Inseon Oh

    (Ulsan National Institute of Science and Technology)

  • Jungmin Park

    (Ulsan National Institute of Science and Technology
    Korea Basic Science Institute)

  • Hosub Jin

    (Ulsan National Institute of Science and Technology)

  • Hyun Cheol Koo

    (Korea Institute of Science and Technology
    Korea University)

  • Byoung-Chul Min

    (Korea Institute of Science and Technology
    Korea University of Science and Technology)

  • Seokmin Hong

    (Korea Institute of Science and Technology)

  • Hyun-Woo Lee

    (Pohang University of Science and Technology)

  • Seung-Hyub Baek

    (Korea Institute of Science and Technology
    Korea University of Science and Technology)

  • Jung-Woo Yoo

    (Ulsan National Institute of Science and Technology)

Abstract

A polar conductor, where inversion symmetry is broken, may exhibit directional propagation of itinerant electrons, i.e., the rightward and leftward currents differ from each other, when time-reversal symmetry is also broken. This potential rectification effect was shown to be very weak due to the fact that the kinetic energy is much higher than the energies associated with symmetry breaking, producing weak perturbations. Here we demonstrate the appearance of giant nonreciprocal charge transport in the conductive oxide interface, LaAlO3/SrTiO3, where the electrons are confined to two-dimensions with low Fermi energy. In addition, the Rashba spin–orbit interaction correlated with the sub-band hierarchy of this system enables a strongly tunable nonreciprocal response by applying a gate voltage. The observed behavior of directional response in LaAlO3/SrTiO3 is associated with comparable energy scales among kinetic energy, spin–orbit interaction, and magnetic field, which inspires a promising route to enhance nonreciprocal response and its functionalities in spin orbitronics.

Suggested Citation

  • Daeseong Choe & Mi-Jin Jin & Shin-Ik Kim & Hyung-Jin Choi & Junhyeon Jo & Inseon Oh & Jungmin Park & Hosub Jin & Hyun Cheol Koo & Byoung-Chul Min & Seokmin Hong & Hyun-Woo Lee & Seung-Hyub Baek & Jung, 2019. "Gate-tunable giant nonreciprocal charge transport in noncentrosymmetric oxide interfaces," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-12466-1
    DOI: 10.1038/s41467-019-12466-1
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    Cited by:

    1. Yupeng Li & Dayu Yan & Yu Hong & Haohao Sheng & Anqi Wang & Ziwei Dou & Xingchen Guo & Xiaofan Shi & Zikang Su & Zhaozheng Lyu & Tian Qian & Guangtong Liu & Fanming Qu & Kun Jiang & Zhijun Wang & Youg, 2024. "Interfering Josephson diode effect in Ta2Pd3Te5 asymmetric edge interferometer," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    2. Junhyeon Jo & Jung Hwa Kim & Choong H. Kim & Jaebyeong Lee & Daeseong Choe & Inseon Oh & Seunghyun Lee & Zonghoon Lee & Hosub Jin & Jung-Woo Yoo, 2022. "Defect-gradient-induced Rashba effect in van der Waals PtSe2 layers," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    3. Xu Zhang & Tongshuai Zhu & Shuai Zhang & Zhongqiang Chen & Anke Song & Chong Zhang & Rongzheng Gao & Wei Niu & Yequan Chen & Fucong Fei & Yilin Tai & Guoan Li & Binghui Ge & Wenkai Lou & Jie Shen & Ha, 2024. "Light-induced giant enhancement of nonreciprocal transport at KTaO3-based interfaces," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    4. Zhaowei Zhang & Naizhou Wang & Ning Cao & Aifeng Wang & Xiaoyuan Zhou & Kenji Watanabe & Takashi Taniguchi & Binghai Yan & Wei-bo Gao, 2022. "Controlled large non-reciprocal charge transport in an intrinsic magnetic topological insulator MnBi2Te4," Nature Communications, Nature, vol. 13(1), pages 1-6, December.

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