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Title: Disorder-induced suppression of charge density wave order: STM study of Pd-intercalated ErTe 3

Journal Article · · Physical Review B
ORCiD logo [1];  [2];  [1];  [3];  [4]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials; Stanford Univ., CA (United States)
  2. Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials; Stanford Univ., CA (United States)
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials; Stanford Univ., CA (United States). Dept. of Physics
  4. SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States). Geballe Lab. for Advanced Materials; Stanford Univ., CA (United States); Stanford Univ., CA (United States). Dept. of Physics

Pd-intercalated ErTe3 is studied as a model system to explore the effect of increasing disorder on an incommensurate two-component charge density wave (CDW). The ordering vectors of the CDW components lie along the two in-plane principal axes of the nearly tetragonal crystal structure. Using scanning tunneling microscopy (STM), we show that introducing Pd intercalants (i.e., disorder) induces CDW dislocations, which appear to be associated with each CDW component separately. Increasing Pd concentration has a stronger effect on the secondary CDW order, manifested in a higher density of dislocations, and thus increases the anisotropy (nematic character) of the CDW. Suggestive evidence of Bragg glass phases at weak disorder is also discussed.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-76SF00515
OSTI ID:
1605023
Journal Information:
Physical Review B, Journal Name: Physical Review B Journal Issue: 23 Vol. 100; ISSN 2469-9950; ISSN PRBMDO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Cited By (1)

Light-induced charge density wave in LaTe3 journal November 2019