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, S. B. Wilkins

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39 Scopus citations

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 2 h. We discuss the implications of these results for some of the competing theories.

Original languageEnglish
Article number167001
JournalPhysical Review Letters
Volume117
Issue number16
DOIs
StatePublished - Oct 11 2016
Externally publishedYes

Funding

Work performed at Brookhaven National Laboratory was supported by the US Department of Energy, Division of Materials Science, under Contract No. DE-SC00112704. X-ray scattering measurements by H.M., M.P.M.D., and J.M.T. were supported by the Center for Emergent Superconductivity, an Energy Frontier Research Center funded by the U.S. DOE, Office of Basic Energy Sciences. This research used resources at the 23-ID-1 beam line of the National Synchrotron Light Source II, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Brookhaven National Laboratory under Contract No. DE-SC0012704. X.M. Chen and V. Thampy contributed equally to this work.

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