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Title: Nematicity in stripe ordered cuprates probed via resonant x-ray scattering

We found that 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 superconductors (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. Our results identify electronic nematicity as an order parameter that is distinct from a purely structural order parameter in underdoped striped cuprates.
Authors:
 [1] ;  [2] ;  [1] ;  [3] ;  [3] ;  [1] ;  [1] ;  [4] ;  [5] ;  [5] ;  [6] ;  [7] ;  [7] ;  [8] ;
  1. Univ. of Waterloo, ON (Canada)
  2. Leibniz Inst. for Solid State and Materials Research (IFW), Dresden (Germany)
  3. Canadian Light Sources, Inc., Saskatoon, SK (Canada)
  4. Univ. of Waterloo, ON (Canada); Canadian Inst. for Advanced Research, Toronto, ON (Canada); Perimeter Inst. for Theoretical Physics, Waterloo, ON (Canada)
  5. Brookhaven National Lab. (BNL), Upton, NY (United States)
  6. Univ. Paris-Sud, Orsay (France)
  7. Univ. of Toronto, ON (Canada)
  8. Leibniz Inst. for Solid State and Materials Research (IFW), Dresden (Germany); Paris Lodron Univ., Salzburg (Austria)
Publication Date:
Report Number(s):
BNL-111782-2016-JA
Journal ID: ISSN 0036-8075; R&D Project: PO010; KC0201060
Grant/Contract Number:
SC00112704
Type:
Accepted Manuscript
Journal Name:
Science
Additional Journal Information:
Journal Volume: 351; Journal Issue: 6273; Journal ID: ISSN 0036-8075
Publisher:
AAAS
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY
OSTI Identifier:
1240593