Publication

Spectroscopic evidence for preformed Cooper pairs in the pseudogap phase of cuprates

Joël Mesot, Johan Juul Chang
2009
Journal Articles

Abstract

Angle-resolved photoemission on underdoped La1.895Sr0.105CuO4 reveals that in the pseudogap phase, the dispersion has two branches located above and below the Fermi level with a minimum at the Fermi momentum. This is characteristic of the Bogoliubov dispersion in the superconducting state. We also observe that the superconducting and pseudogaps have the same d-wave form with the same amplitude. Our observations provide direct evidence for preformed Cooper pairs, implying that the pseudogap phase is a precursor to superconductivity. Copyright (C) EPLA, 2009

Official source

https://infoscience.epfl.ch/entities/publication/c2e2e51e-a737-4113-a13e-cf662a0dad24

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Spectroscopic evidence for preformed Cooper pairs in the pseudogap phase of cuprates

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