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Title: Coupling of magnetic orders in La 2 CuO 4 + x

Journal Article · · Physical Review B
 [1];  [2];  [3];  [4];  [1];  [1];  [2]
  1. National Research Centre, Moscow (Russia). Kurchatov Institute
  2. Univ. of British Columbia, Vancouver, BC (Canada)
  3. Bruker BioSpin AG, Fallanden (Switzerland)
  4. Texas Tech Univ., Lubbock, TX (United States)

High transverse magnetic field and zero field muon spin rotation and relaxation measurements have been carried out in a lightly oxygen-doped high-Tc parent compound La2CuO4 in a temperature range from 2 K to 300 K. As in the stoichiometric compound, muon spin rotation spectra reveal, along with the antiferromagnetic local field, the presence of an additional source of magnetic field at the muon. The results indicate that this second magnetic order is driven by the antiferromagnetism at low temperature but the two magnetic orders decouple at higher temperature. Furthermore, the ability of μ+SR to detect this additional magnetism deteriorates with doping, thus rendering the technique impotent to reveal time-reversal symmetry breaking in superconductors.

Research Organization:
Texas Tech Univ., Lubbock, TX (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Russian Foundation for Basic Research; Russian Science Foundation
Grant/Contract Number:
SC0001769; 14-19-00662; 16-07-00204; 16-29-03027
OSTI ID:
1535770
Alternate ID(s):
OSTI ID: 1328243
Journal Information:
Physical Review B, Vol. 94, Issue 13; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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