Distinct Nature of Static and Dynamic Magnetic Stripes in Cuprate Superconductors

H. Jacobsen, S. L. Holm, M.-E. Lăcătuşu, A. T. Rømer, M. Bertelsen, M. Boehm, R. Toft-Petersen, J.-C. Grivel, S. B. Emery, L. Udby, B. O. Wells, and K. Lefmann
Phys. Rev. Lett. 120, 037003 – Published 18 January 2018
PDFHTMLExport Citation

Abstract

We present detailed neutron scattering studies of the static and dynamic stripes in an optimally doped high-temperature superconductor, La2CuO4+y. We observe that the dynamic stripes do not disperse towards the static stripes in the limit of vanishing energy transfer. Therefore, the dynamic stripes observed in neutron scattering experiments are not the Goldstone modes associated with the broken symmetry of the simultaneously observed static stripes, and the signals originate from different domains in the sample. These observations support real-space electronic phase separation in the crystal, where the static stripes in one phase are pinned versions of the dynamic stripes in the other, having slightly different periods. Our results explain earlier observations of unusual dispersions in underdoped La2xSrxCuO4 (x=0.07) and La2xBaxCuO4 (x=0.095).

  • Figure
  • Figure
  • Figure
  • Received 27 April 2017

DOI:https://doi.org/10.1103/PhysRevLett.120.037003

© 2018 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

H. Jacobsen1,2, S. L. Holm1,3, M.-E. Lăcătuşu1,4, A. T. Rømer1, M. Bertelsen1, M. Boehm5, R. Toft-Petersen6,7, J.-C. Grivel4, S. B. Emery8,*, L. Udby1, B. O. Wells8, and K. Lefmann1

  • 1Nanoscience Center, Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen Ø, Denmark
  • 2Department of Physics, Oxford University, Oxford OX1 3PU, United Kingdom
  • 3Interdisciplinary Nanoscience Center—INANO-Kemi, 8000 Aarhus C, Denmark
  • 4Institute of Energy Conversion, Technical University of Denmark, 4000 Roskilde, Denmark
  • 5Institut Max Von Laue Paul Langevin, 38042 Grenoble, France
  • 6Helmholtz-Zentrum Berlin, 14109 Berlin, Germany
  • 7Department of Physics, Technical University of Denmark, 2800 Kongens Lyngby, Denmark
  • 8Department of Physics and Institute of Materials Science, University of Connecticut, Connecticut 06269, USA

  • *Present address: Naval Surface Warfare Center, Indian Head EOD Technology Division, Indian Head, Maryland 20640, USA.

Article Text (Subscription Required)

Click to Expand

Supplemental Material (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 120, Iss. 3 — 19 January 2018

Reuse & Permissions
Access Options
CHORUS

Article Available via CHORUS

Download Accepted Manuscript

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×