Stripe correlations of spins and holes and phonon heat transport in doped
II. Physikalisches Institut, Universität zu Köln - 50937 Köln, Germany
2 Physikalisches Institut, Universität Karlsruhe - 76128 Karlsruhe, Germany
Accepted: 14 September 1998
We present experimental evidence for a dramatic suppression of the phononic thermal conductivity of rare-earth– and Sr–doped . Remarkably, this suppression correlates with the occurrence of superconductivity. Conventional models for the phonon heat transport fail to explain these results. In contrast, a straightforward explanation is possible in terms of static and dynamic stripe correlations of holes and spins.
PACS: 72.15.Eb – Electrical and thermal conduction in crystalline metals and alloys / 74.62.Dh – Effects of crystal defects, doping and substitution / 74.72.Dn – La-based cuprates
© EDP Sciences, 1998