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Orientation-dependent electronic structure in interfacial superconductors LaAlO3/KTaO3

Author

Listed:
  • Xiaoyang Chen

    (Fudan University)

  • Tianlun Yu

    (Fudan University)

  • Yuan Liu

    (Zhejiang University)

  • Yanqiu Sun

    (Zhejiang University)

  • Minyinan Lei

    (Fudan University)

  • Nan Guo

    (Fudan University)

  • Yu Fan

    (Fudan University)

  • Xingtian Sun

    (Fudan University)

  • Meng Zhang

    (Zhejiang University)

  • Fatima Alarab

    (Paul Scherrer Institute)

  • Vladimir N. Strocov

    (Paul Scherrer Institute)

  • Yilin Wang

    (University of Science and Technology of China)

  • Tao Zhou

    (Fudan University)

  • Xinyi Liu

    (Fudan University)

  • Fanjin Lu

    (Fudan University)

  • Weitao Liu

    (Fudan University)

  • Yanwu Xie

    (Zhejiang University)

  • Rui Peng

    (Fudan University
    Shanghai Research Center for Quantum Sciences)

  • Haichao Xu

    (Fudan University
    Shanghai Research Center for Quantum Sciences)

  • Donglai Feng

    (University of Science and Technology of China
    University of Science and Technology of China)

Abstract

Emergent superconductivity at the LaAlO3/KTaO3 interfaces exhibits a mysterious dependence on the KTaO3 crystallographic orientations. Here by soft X-ray angle-resolved photoemission spectroscopy, we directly resolve the electronic structure of the LaAlO3/KTaO3 interfacial superconductors and the non-superconducting counterpart. We find that the mobile electrons that contribute to the interfacial superconductivity show strong k⊥ dispersion. Comparing the superconducting and non-superconducting interfaces, the quasi-three-dimensional electron gas with over 5.5 nm spatial distribution ubiquitously exists and shows similar orbital occupations. The signature of electron-phonon coupling is observed and intriguingly dependent on the interfacial orientations. Remarkably, the stronger electron-phonon coupling signature correlates with the higher superconducting transition temperature. Our observations help scrutinize the theories on the orientation-dependent superconductivity and offer a plausible and straightforward explanation. The interfacial orientation effect that can modify the electron-phonon coupling strength over several nanometers sheds light on the applications of oxide interfaces in general.

Suggested Citation

  • Xiaoyang Chen & Tianlun Yu & Yuan Liu & Yanqiu Sun & Minyinan Lei & Nan Guo & Yu Fan & Xingtian Sun & Meng Zhang & Fatima Alarab & Vladimir N. Strocov & Yilin Wang & Tao Zhou & Xinyi Liu & Fanjin Lu &, 2024. "Orientation-dependent electronic structure in interfacial superconductors LaAlO3/KTaO3," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
  • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-51969-4
    DOI: 10.1038/s41467-024-51969-4
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    1. C. Enderlein & J. Ferreira Oliveira & D. A. Tompsett & E. Baggio Saitovitch & S. S. Saxena & G. G. Lonzarich & S. E. Rowley, 2020. "Superconductivity mediated by polar modes in ferroelectric metals," Nature Communications, Nature, vol. 11(1), pages 1-10, December.
    2. Chong Liu & Ryan P. Day & Fengmiao Li & Ryan L. Roemer & Sergey Zhdanovich & Sergey Gorovikov & Tor M. Pedersen & Juan Jiang & Sangjae Lee & Michael Schneider & Doug Wong & Pinder Dosanjh & Frederick , 2021. "High-order replica bands in monolayer FeSe/SrTiO3 revealed by polarization-dependent photoemission spectroscopy," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    3. Q. Song & T. L. Yu & X. Lou & B. P. Xie & H. C. Xu & C. H. P. Wen & Q. Yao & S. Y. Zhang & X. T. Zhu & J. D. Guo & R. Peng & D. L. Feng, 2019. "Evidence of cooperative effect on the enhanced superconducting transition temperature at the FeSe/SrTiO3 interface," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
    4. Y. Kozuka & M. Kim & C. Bell & B. G. Kim & Y. Hikita & H. Y. Hwang, 2009. "Two-dimensional normal-state quantum oscillations in a superconducting heterostructure," Nature, Nature, vol. 462(7272), pages 487-490, November.
    5. C. Enderlein & J. Ferreira Oliveira & D. A. Tompsett & E. Baggio Saitovitch & S. S. Saxena & G. G. Lonzarich & S. E. Rowley, 2020. "Author Correction: Superconductivity mediated by polar modes in ferroelectric metals," Nature Communications, Nature, vol. 11(1), pages 1-1, December.
    6. A. Ohtomo & H. Y. Hwang, 2004. "A high-mobility electron gas at the LaAlO3/SrTiO3 heterointerface," Nature, Nature, vol. 427(6973), pages 423-426, January.
    7. C. Cancellieri & A. S. Mishchenko & U. Aschauer & A. Filippetti & C. Faber & O. S. Barišić & V. A. Rogalev & T. Schmitt & N. Nagaosa & V. N. Strocov, 2016. "Polaronic metal state at the LaAlO3/SrTiO3 interface," Nature Communications, Nature, vol. 7(1), pages 1-8, April.
    8. C. Cancellieri & A. S. Mishchenko & U. Aschauer & A. Filippetti & C. Faber & O. S. Barišić & V. A. Rogalev & T. Schmitt & N. Nagaosa & V. N. Strocov, 2016. "Correction: Corrigendum: Polaronic metal state at the LaAlO3/SrTiO3 interface," Nature Communications, Nature, vol. 7(1), pages 1-1, April.
    9. Changjiang Liu & Xianjing Zhou & Deshun Hong & Brandon Fisher & Hong Zheng & John Pearson & Jidong Samuel Jiang & Dafei Jin & Michael R. Norman & Anand Bhattacharya, 2023. "Tunable superconductivity and its origin at KTaO3 interfaces," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
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