Scanning tunnelling microscopy studies have identified a vibrational phonon mode in a high-temperature superconductor, but is it evidence for an electron–phonon pairing interaction or is it a signature of an inelastic tunnelling channel?
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I would like to acknowledge the Center for Nanophase Materials Science at Oak Ridge National Laboratory for support.
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Scalapino, D. Pairing glue or inelastic tunnelling?. Nature Phys 2, 593–594 (2006). https://doi.org/10.1038/nphys398
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DOI: https://doi.org/10.1038/nphys398
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