Details

Autor(en) / Beteiligte

• Bussmann-Holder, A
• Keller, H
• Bishop, A. R
• Simon, A
• Micnas, R
• Müller, K. A

Titel

Unconventional isotope effects as evidence for polaron formation in cuprates

Ist Teil von

• Europhysics letters, 2005-11, Vol.72 (3), p.423-429

Ort / Verlag

IOP Publishing

Erscheinungsjahr

2005

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Unconventional isotope effects (Phys. Rev. Lett., 92 (2004) 057602) as observed in high-temperature superconducting cuprates (HTSC), are explained by polaron formation which leads to a renormalization of the single-particle energies and the formation of density-density interactions. It is shown that the dominant contribution to these effects stems from the coupling to the quadrupolar Q2-type phonon mode.