Remarkable Stability of Charge Density Wave Order in La1.875Ba0.125CuO4

X. M. Chen, V. Thampy, C. Mazzoli, A. M. Barbour, H. Miao, G. D. Gu, Y. Cao, J. M. Tranquada, M. P. M. Dean, and S. B. Wilkins
Phys. Rev. Lett. 117, 167001 – Published 11 October 2016
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Abstract

The occurrence of charge-density-wave (CDW) order in underdoped cuprates is now well established, although the precise nature of the CDW and its relationship with superconductivity is not. Theoretical proposals include contrasting ideas such as that pairing may be driven by CDW fluctuations or that static CDWs may intertwine with a spatially modulated superconducting wave function. We test the dynamics of CDW order in La1.825Ba0.125CuO4 by using x-ray photon correlation spectroscopy at the CDW wave vector, detected resonantly at the Cu L3 edge. We find that the CDW domains are strikingly static, with no evidence of significant fluctuations up to 2¾h. We discuss the implications of these results for some of the competing theories.

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  • Received 13 June 2016

DOI:https://doi.org/10.1103/PhysRevLett.117.167001

© 2016 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

X. M. Chen1,*, V. Thampy1,†, C. Mazzoli2, A. M. Barbour2, H. Miao1, G. D. Gu1, Y. Cao1, J. M. Tranquada1, M. P. M. Dean1,‡, and S. B. Wilkins2,§

  • 1Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
  • 2National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA

  • *xmchen@bnl.gov
  • vthampy@bnl.gov
  • mdean@bnl.gov
  • §swilkins@bnl.gov

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Issue

Vol. 117, Iss. 16 — 14 October 2016

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