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Theory of hyperfine interactions associated with the negative muon in lanthanum copper oxide high Tc system

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Abstract

We have carried out first‐principles Unrestricted Hartree–Fock Cluster investigations to demonstrate that the Auger holes produced by the entry of μ- into the oxygen ions in La_2CuO_4 lead to stable O-μ- centers at apical and planar sites. The hyperfine fields associated with these two sites suggest that the apical one is responsible for the stronger and more anisotropic Knight shift in μSR measurements and the planar for the weaker and less anisotropic shift, the needed susceptibility arising from the localized magnetic moments on the O-μ- centers. This identification of the susceptibility provides support for the model proposed for the observed increase in μSR relaxation rate below the superconducting temperatures.

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Authors and Affiliations

  1. Department of Physics, State University of New York at Albany, Albany, NY, 12222, USA

    Sudha Srinivas, S.B. Sulaiman, N. Sahoo & T.P. Das

  2. Muon Science Laboratory, Institute of Physical and Chemical Research (RIKEN), Wako, Saitama, 351‐01, Japan

    T.P. Das

  3. Faculty of Engineering, Yamanashi University, Kofu, Yamanashi, 400, Japan

    E. Torikai

  4. Meson Science Laboratory, Faculty of Science, University of Tokyo, Hongo, Bunkyo‐ku, Tokyo, 113, Japan

    K. Nishiyama & K. Nagamine

  5. Muon Science Laboratory, Institute of Physical and Chemical Research (RIKEN), Wako, Saitama, 351‐01, Japan

    K. Nagamine

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  1. Sudha Srinivas
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  2. S.B. Sulaiman
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  3. N. Sahoo
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  4. T.P. Das
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  5. E. Torikai
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  6. K. Nishiyama
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  7. K. Nagamine
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Srinivas, S., Sulaiman, S., Sahoo, N. et al. Theory of hyperfine interactions associated with the negative muon in lanthanum copper oxide high Tc system. Hyperfine Interactions 105, 167–173 (1997). https://doi.org/10.1023/A:1012686901539

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