Precision Search for Magnetic Order in the Pseudogap Regime of La2-xSrxCuO4 by Muon Spin Relaxation
W. Huang, V. Pacradouni, M. P. Kennett, S. Komiya, and J. E. Sonier
TL;DR
This study used high-precision muon spin relaxation to search for magnetic order in the pseudogap phase of La2-xSrxCuO4, finding no evidence of static magnetic order above a certain doping level.
Contribution
The paper introduces a detailed analysis of muon-nuclei interactions and high-count spectra to rigorously test for magnetic order in the pseudogap regime, improving upon previous methods.
Findings
No static magnetic order detected above p=0.13
Refined analysis of muon-nuclei interactions
High-count spectra confirm null results
Abstract
We report a high precision search for orbital-like magnetic order in the pseudogap region of La2-xSrxCuO4 single crystals using zero-field muon spin relaxation (ZF-muSR). In contrast to previous studies of this kind, the effects of the dipolar and quadrupolar interactions of the muon with nearby nuclei are calculated. ZF-muSR spectra with a high number of counts were also recorded to determine whether a magnetically ordered phase exists in dilute regions of the sample. Despite these efforts, we find no evidence for static magnetic order of any kind in the pseudogap region above the hole-doping concentration p = 0.13.
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