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NMR study of the isotopically engineered Ge single crystals

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Abstract

We report on the first NMR study of 73Ge nuclear spin decoherence in germanium single crystals with different abundance of the 73Ge isotope. Hahn echo decays are well fit by a superposition of two exponentials. The deviation from the single exponential is more pronounced in the more spin-diluted sample, causing long-lived echoes. We show that the decay of these echoes becomes slower with the reduction of 73Ge abundance and is therefore caused by dipole–dipole interaction, reflecting the fundamental decoherence process in the spin system. The fast decay at the beginning of the relaxation process is shown to be mainly caused by the quadrupole interaction. Our experimental findings are supported by the calculations of Hahn echo decays in the germanium crystals under study. Quite good agreement between the theory and experiment is demonstrated.

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Authors and Affiliations

  1. Physics Department, Ben-Gurion University of the Negev, Beer Sheva, 84105, Israel

    A. M. Panich

  2. Institute of Physics, University of Szczecin, 70-451, Szczecin, Poland

    N. A. Sergeev

  3. Jack and Pear Resnick Institute of Advanced Technology, Physics Department, Bar-Ilan University, Ramat Gan, 52900, Israel

    I. Shlimak

  4. Institute of Molecular Physics, Russian Research Center “Kurchatov Institute”, Moscow, 123182, Russia

    V. I. Ozhogin & A. V. Tikhomirov

Authors
  1. A. M. Panich
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  2. N. A. Sergeev
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  3. I. Shlimak
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  4. V. I. Ozhogin
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  5. A. V. Tikhomirov
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Correspondence to A. M. Panich.

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Panich, A.M., Sergeev, N.A., Shlimak, I. et al. NMR study of the isotopically engineered Ge single crystals. Hyperfine Interact 180, 1–5 (2007). https://doi.org/10.1007/s10751-008-9622-z

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  • DOI: https://doi.org/10.1007/s10751-008-9622-z

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