Zusammenfassung
We review various isotope effects in the high- T c cuprate superconductors
to assess the role of the electron-phonon interaction in the basic
physics of these materials. Of particular interest are the unconventional
isotope effects on the supercarrier mass, on the charge-stripe formation
temperature, on the pseudogap formation temperature, on the electron
paramagnetic resonance (EPR) linewidth, on the spin-glass freezing
temperature and on the antiferromagnetic ordering temperature. The
observed unconventional isotope effects strongly suggest that lattice
vibrations play an important role in the microscopic pairing mechanism
of high-temperature superconductivity.
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