Stripe Correlations of Spins and Holes and Phonon Heat Transport in Doped La_2CuO_4
O. Baberski, A. Lang, O. Maldonado, M. H\"ucker, B. B\"uchner (II., Physikalisches Institut, Universit\"at zu K\"oln, Germany), A. Freimuth, (Physikalisches Institut, Universit\"at Karlsruhe, Germany)
TL;DR
This study shows that stripe correlations of spins and holes in doped La_2CuO_4 significantly suppress phonon heat transport, correlating with superconductivity, challenging conventional phonon transport models.
Contribution
It provides experimental evidence linking stripe correlations to phonon heat transport suppression in doped La_2CuO_4, highlighting a new mechanism related to superconductivity.
Findings
Suppression of phononic thermal conductivity in doped La_2CuO_4
Correlation between stripe order and heat transport suppression
Failure of conventional models to explain the observed phenomena
Abstract
We present experimental evidence for a dramatic suppression of the phononic thermal conductivity of rare earth and Sr doped La_2CuO_4. 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.
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