Multiple scattering camouflaged as magnetic stripes in single crystals of superconducting (La,Sr)2CuO4

Ana-Elena Tutueanu*, Tim Birger Tejsner, Monica-Elisabeta Lacatusu, Henriette Wase Hansen, Kira Lieberkind Eliasen, Martin Böhm, Paul Steffens, Christoph Niederhauser, Kim Lefmann

*Corresponding author

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Neutron diffraction has been a very prominent tool to investigate high-temperature superconductors, in particular through the discovery of an incommensurate magnetic signal known as stripes. We here report the findings of a neutron diffraction experiment on the superconductor (La,Sr)2CuO4, where a spurious signal appeared to be magnetic stripes. The signal strength was found to be strongly dependent on the neutron energy, peaking at E=4.6 meV. We therefore attribute the origin of this signal to be a combination of multiple scattering and crystal twinning. A forward calculation of the scattering intensity including these two effects almost completely recovers our experimental observations. We emphasize the need for employing such analysis when searching for ways to avoid spurious scattering signals.
Translated title of the contributionFlerspredning kamufleret som magnetiske striber i en enkelkrystal, superledende (La,Sr)2CuO4
Original languageEnglish
JournalJournal of Neutron Research
Volume22
Issue number1
Pages (from-to)49-56
Number of pages8
ISSN1023-8166
DOIs
Publication statusPublished - 2020

Cite this