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Low-frequency vibrational density of states of ordinary and ultra-stable glasses

Author

Listed:
  • Ding Xu

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

  • Shiyun Zhang

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

  • Hua Tong

    (University of Science and Technology of China)

  • Lijin Wang

    (Anhui University)

  • Ning Xu

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

Abstract

A remarkable feature of disordered solids distinct from crystals is the violation of the Debye scaling law of the low-frequency vibrational density of states. Because the low-frequency vibration is responsible for many properties of solids, it is crucial to elucidate it for disordered solids. Numerous recent studies have suggested power-law scalings of the low-frequency vibrational density of states, but the scaling exponent is currently under intensive debate. Here, by classifying disordered solids into stable and unstable ones, we find two distinct and robust scaling exponents for non-phononic modes at low frequencies. Using the competition of these two scalings, we clarify the variation of the scaling exponent and hence reconcile the debate. Via the study of both ordinary and ultra-stable glasses, our work reveals a comprehensive picture of the low-frequency vibration of disordered solids and sheds light on the low-frequency vibrational features of ultra-stable glasses on approaching the ideal glass.

Suggested Citation

  • Ding Xu & Shiyun Zhang & Hua Tong & Lijin Wang & Ning Xu, 2024. "Low-frequency vibrational density of states of ordinary and ultra-stable glasses," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-45671-8
    DOI: 10.1038/s41467-024-45671-8
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    References listed on IDEAS

    as
    1. Lijin Wang & Andrea Ninarello & Pengfei Guan & Ludovic Berthier & Grzegorz Szamel & Elijah Flenner, 2019. "Low-frequency vibrational modes of stable glasses," Nature Communications, Nature, vol. 10(1), pages 1-7, December.
    2. Ludovic Berthier & Patrick Charbonneau & Andrea Ninarello & Misaki Ozawa & Sho Yaida, 2019. "Zero-temperature glass transition in two dimensions," Nature Communications, Nature, vol. 10(1), pages 1-7, December.
    3. Srikanth Sastry & Pablo G. Debenedetti & Frank H. Stillinger, 1998. "Signatures of distinct dynamical regimes in the energy landscape of a glass-forming liquid," Nature, Nature, vol. 393(6685), pages 554-557, June.
    4. T. S. Grigera & V. Martín-Mayor & G. Parisi & P. Verrocchio, 2003. "Phonon interpretation of the ‘boson peak’ in supercooled liquids," Nature, Nature, vol. 422(6929), pages 289-292, March.
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