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This content will become publicly available on November 7, 2018

Title: High-temperature charge density wave correlations in La 1.875Ba 0.125CuO 4 without spin–charge locking

Although all superconducting cuprates display charge-ordering tendencies, their low-temperature properties are distinct, impeding efforts to understand the phenomena within a single conceptual framework. While some systems exhibit stripes of charge and spin, with a locked periodicity, others host charge density waves (CDWs) without any obviously related spin order. Here we use resonant inelastic X-ray scattering to follow the evolution of charge correlations in the canonical stripe-ordered cuprate La 1.875Ba 0.125CuO 4 across its ordering transition. We find that high-temperature charge correlations are unlocked from the wavevector of the spin correlations, signaling analogies to CDW phases in various other cuprates. This indicates that stripe order at low temperatures is stabilized by the coupling of otherwise independent charge and spin density waves, with important implications for the relation between charge and spin correlations in the cuprates.
ORCiD logo [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [5] ;  [5] ;  [5] ;  [1] ;  [1] ;  [1] ;  [4] ;  [4] ; ORCiD logo [1]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Dept.
  2. Consiglio Nazionale delle Ricerche (CNR), Roma (Italy). Istituto dei Sistemi Complessi, Dept.; Sapienza Univ. of Rome (Italy). Dipartimento di Fisica
  3. Brandenburg Univ. of Technology (BTU), Cottbus-Senftenberg (Germany)
  4. Politecnico di Milano (Italy). Dipartimento di Fisica; National Research Council (CNR), Milano (Italy). Inst. for Superconductors, Innovative Materials and Devices (CNR-SPIN)
  5. European Synchrotron Radiation Facility (ESRF), Grenoble (France)
Publication Date:
Report Number(s):
Journal ID: ISSN 0027-8424; R&D Project: PM015; KC0207010; KC0202030
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Additional Journal Information:
Journal Volume: 114; Journal Issue: 47; Journal ID: ISSN 0027-8424
National Academy of Sciences, Washington, DC (United States)
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
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Charge density waves; Stripes; Superconductivity; Cuprates
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1407841