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Related Experiment Video

Updated: Jun 24, 2026

Setting Limits on Supersymmetry Using Simplified Models
07:46

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Published on: November 16, 2013

Superconductivity in the fullerenes.

C M Varma, J Zaanen, K Raghavachari

    Science (New York, N.Y.)
    |November 15, 1991
    PubMed
    Summary
    This summary is machine-generated.

    Intramolecular vibrations in doped fullerenes significantly impact electron scattering near the Fermi surface. This study derives electron-phonon coupling parameters, explaining superconductivity and predicting vibrational mode changes in superconductive fullerenes.

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    Last Updated: Jun 24, 2026

    Setting Limits on Supersymmetry Using Simplified Models
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    Published on: July 8, 2021

    Area of Science:

    • Condensed Matter Physics
    • Materials Science
    • Quantum Chemistry

    Background:

    • Doped fullerenes exhibit complex electronic properties.
    • Electron-phonon interactions are crucial for understanding superconductivity in materials.

    Purpose of the Study:

    • To derive and evaluate electron-phonon coupling parameters for intramolecular vibrations in doped fullerenes.
    • To explain the observed superconducting transition temperatures and their dependence on lattice constants.
    • To predict spectroscopic signatures of superconductivity in these materials.

    Main Methods:

    • Derivation of a simple expression for electron-phonon coupling parameters.
    • Evaluation of parameters using quantum-chemical calculations.
    • Analysis of superconducting transition temperatures and lattice constant variations.

    Main Results:

    • A theoretical framework for electron-phonon coupling via intramolecular vibrations was established.
    • The derived parameters successfully explain superconducting transition temperatures in doped fullerenes.
    • Quantum-chemical calculations validated the theoretical model.

    Conclusions:

    • Intramolecular vibrations play a key role in electron scattering and superconductivity in doped fullerenes.
    • The study predicts a significant broadening (approx. 20%) and softening (approx. 5%) of high-frequency H(2) modes in superconductive versus insulating fullerenes.
    • These predictions offer testable experimental signatures for superconductivity in fullerene systems.