Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session M22: Superconductivity:Mostly_CuO_3
8:00 AM–10:48 AM,
Wednesday, March 8, 2023
Room: Room 214
Sponsoring
Unit:
DCMP
Chair: Sumitendra Mazumdar, University of Arizona
Abstract: M22.00003 : Single domain stripe order in a high-temperature superconductor La2−xSrxCuO4
8:24 AM–8:36 AM
Presenter:
Gediminas Simutis
(Paul Scherrer Institute)
Author:
Gediminas Simutis
(Paul Scherrer Institute)
Uniaxial pressure can differentiate between different ground states, but the small ordered moment and background from pressure cells has up to now prevented such experiments. Here we tackle this challenge by designing a low-background uniaxial cell, optimizing the scattering experiment based on neutron-tracing simulations and making use of the unparalleled performance of the ThALES spectrometer at ILL [2].
We will present neutron scattering experiments, which demonstrate that the magnetic spin density wave order parameter is also uniaxial, the two density waves are coupled, and the fundamental electronic order is a single-domain stripe state [3].
[1] Tranquada et al., Nature 375, 561 (1995)
[2] Boehm et al., Neutron News 26, 18 (2015)
[3] Simutis et al., arXiv:2204.02304 (2022)
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