An unusual isotope effect in a high-transition-temperature superconductor

Abstract

In conventional superconductors, the electron pairing that allows superconductivity is caused by exchange of virtual phonons, which are quanta of lattice vibration. For high-transition-temperature (high-Tc) superconductors, it is far from clear that phonons are involved in the pairing at all. For example, the negligible change in Tc of optimally doped Bi2Sr2CaCu2O8 (Bi2212) upon oxygen isotope substitution (16O to 18O leads to Tc decreasing from 92 to 91 K) has often been taken to mean that phonons play an insignificant role in this material. Here we provide a detailed comparison of the electron dynamics of Bi2212 samples containing different oxygen isotopes, using angle-resolved photoemission spectroscopy. Our data show definite and strong isotope effects. Surprisingly, the effects mainly appear in broad high-energy humps, commonly referred to as "incoherent peaks". As a function of temperature and electron momentum, the magnitude of the isotope effect closely correlates with the superconducting gap - that is, the pair binding energy. We suggest that these results can be explained in a dynamic spin-Peierls picture, where the singlet pairing of electrons and the electron-lattice coupling mutually enhance each other.

References in corpus (13)

• Evidence for ubiquitous strong electron-phonon coupling in high-temperature superconductors
• Destruction of the Fermi Surface in Underdoped High Tc Superconductors
• Discovery of microscopic electronic inhomogeneity in the high-Tc superconductor Bi2Sr2CaCu2O8+x
• On the Doping and Temperature Dependence of the Mass Enhancement Observed in the Cuprate Bi2212
• Renormalization of spectral lineshape and dispersion below Tc in Bi2Sr2CaCu2O8+d
• Phenomenological Models for the Gap Anisotropy of Bi-2212 as Measured by ARPES
• Evidence for an energy scale for quasiparticle dispersion in Bi_2Sr_2CaCu_2O_8
• Coupling Of The B1g Phonon To The Anti-Nodal Electronic States of Bi2Sr2Ca0.92Y0.08Cu2O(8+delta)
• Bosonic Mode Mixing in the Superconducting State Spectral Function of Bi_2Sr_2CaCu_2O_{8+delta}
• High-transition-temperature superconductivity in the absence of the magnetic-resonance mode
• A metallic phase in lightly doped La${}_{2-x}$Sr${}_x$CuO${}_4$ observed by electron paramagnetic resonance
• Polaronic and nonadiabatic phase diagram from anomalous isotope effects
• Strong Influence of Phonons on the Electron Dynamics of Bi2212

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