Nematicity in stripe-ordered cuprates probed via resonant x-ray scattering
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Publication:2961614
DOI10.1126/SCIENCE.AAD1824zbMATH Open1355.82056arXiv1602.02171OpenAlexW2259678347WikidataQ62596377 ScholiaQ62596377MaRDI QIDQ2961614
Author name not available (Why is that?)
Publication date: 15 February 2017
Published in: (Search for Journal in Brave)
Abstract: In underdoped cuprate superconductors, a rich competition occurs between superconductivity and charge density wave (CDW) order. Whether rotational symmetry breaking (nematicity) occurs intrinsically and generically or as a consequence of other orders is under debate. Here we employ resonant x-ray scattering in stripe-ordered (La,M)_2CuO_4 to probe the relationship between electronic nematicity of the Cu 3d orbitals, structure of the (La,M)_2O_2 layers, and CDW order. We find distinct temperature dependences for the structure of the (La,M)_2O_2 layers and the electronic nematicity of the CuO_2 planes, with only the latter being enhanced by the onset of CDW order. These results identify electronic nematicity as an order parameter that is distinct from a purely structural order parameter in underdoped striped cuprates.
Full work available at URL: https://arxiv.org/abs/1602.02171
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