Polaronic origin of the isotope effect on the London penetration depth in 
high-temperature superconducting oxides

Bussmann-Holder, A.; Micnas, R.; Bishop, A. R.

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Polaronic origin of the isotope effect on the London penetration depth in high-temperature superconducting oxides

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Bussmann-Holder, A.
Former Departments, Max Planck Institute for Solid State Research, Max Planck Society;
Department Nanochemistry (Bettina V. Lotsch), Max Planck Institute for Solid State Research, Max Planck Society;
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;
Department Electronic Structure Theory (Ali Alavi), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Bussmann-Holder, A., Micnas, R., & Bishop, A. R. (2004). Polaronic origin of the isotope effect on the London penetration depth in high-temperature superconducting oxides. Philosophical Magazine, 84(12), 1257-1264.

Cite as: https://hdl.handle.net/21.11116/0000-000E-F677-7

Abstract

Direct measurements of the in-plane London penetration depth lambda(L)
have recently been performed on high-temperature superconducting copper
oxides by a new low-energy muon spin rotation technique. The results
show that lambda(L) is isotope dependent, evidencing unconventional
electron-phonon interactions as its source. The data are interpreted
here in terms of polaronic effects on the single-particle energies,
which leads to level shifts and exponential band narrowing. Good
agreement with the experimental data is obtained.