TY - JOUR
T1 - Multiple scattering camouflaged as magnetic stripes in single crystals of superconducting (La,Sr)2CuO4
AU - Tutueanu, Ana-Elena
AU - Tejsner, Tim Birger
AU - Lacatusu, Monica-Elisabeta
AU - Hansen, Henriette Wase
AU - Eliasen, Kira Lieberkind
AU - Böhm, Martin
AU - Steffens, Paul
AU - Niederhauser, Christoph
AU - Lefmann, Kim
PY - 2020
Y1 - 2020
N2 - 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.
AB - 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.
U2 - 10.3233/JNR-190144
DO - 10.3233/JNR-190144
M3 - Journal article
VL - 22
SP - 49
EP - 56
JO - Journal of Neutron Research
JF - Journal of Neutron Research
SN - 1023-8166
IS - 1
ER -