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Mechanical dissipation from charge and spin transitions in oxygen-deficient SrTiO3 surfaces

Author

Listed:
  • Marcin Kisiel

    (University of Basel)

  • Oleg O. Brovko

    (The Abdus Salam International Centre for Theoretical Physics (ICTP))

  • Dilek Yildiz

    (University of Basel)

  • Rémy Pawlak

    (University of Basel)

  • Urs Gysin

    (University of Basel)

  • Erio Tosatti

    (The Abdus Salam International Centre for Theoretical Physics (ICTP)
    Scuola Internazionale Superiore di Studi Avanzati (SISSA), and CNR-IOM Democritos)

  • Ernst Meyer

    (University of Basel)

Abstract

Bodies in relative motion separated by a gap of a few nanometers can experience a tiny friction force. This non-contact dissipation can have various origins and can be successfully measured by a sensitive pendulum atomic force microscope tip oscillating laterally above the surface. Here, we report on the observation of dissipation peaks at selected voltage-dependent tip-surface distances for oxygen-deficient strontium titanate (SrTiO3) surface at low temperatures (T = 5 K). The observed dissipation peaks are attributed to tip-induced charge and spin state transitions in quantum-dot-like entities formed by single oxygen vacancies (and clusters thereof, possibly through a collective mechanism) at the SrTiO3 surface, which in view of technological and fundamental research relevance of the material opens important avenues for further studies and applications.

Suggested Citation

  • Marcin Kisiel & Oleg O. Brovko & Dilek Yildiz & Rémy Pawlak & Urs Gysin & Erio Tosatti & Ernst Meyer, 2018. "Mechanical dissipation from charge and spin transitions in oxygen-deficient SrTiO3 surfaces," Nature Communications, Nature, vol. 9(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05392-1
    DOI: 10.1038/s41467-018-05392-1
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    Cited by:

    1. Rui Han & Shihong Chen & Chong Wang & Shuchun Huang & Haowen Xu & Zejun Sun & Huixian Liu & Jianbin Luo & Dameng Liu & Huan Liu, 2025. "Ultrafast dynamics of electronic friction energy dissipation in defective semiconductor monolayer," Nature Communications, Nature, vol. 16(1), pages 1-8, December.
    2. Ruochen Shi & Qize Li & Xiaofeng Xu & Bo Han & Ruixue Zhu & Fachen Liu & Ruishi Qi & Xiaowen Zhang & Jinlong Du & Ji Chen & Dapeng Yu & Xuetao Zhu & Jiandong Guo & Peng Gao, 2024. "Atomic-scale observation of localized phonons at FeSe/SrTiO3 interface," Nature Communications, Nature, vol. 15(1), pages 1-7, December.
    3. Aisheng Song & Jian-Xun Zhao & Xin Tang & Hai-Jun Wu & Zhiyue Xu & Jiawei Cao & Xiao Liu & Hui Wang & Qunyang Li & Yuan-Zhong Hu & Xin Li & Jianbin Luo & Tian-Bao Ma, 2025. "Tuning friction force and reducing wear by applying alternating electric current in conductive AFM experiments," Nature Communications, Nature, vol. 16(1), pages 1-9, December.

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