Anisotropy of conducting p states and 11B nuclear spin-lattice relaxation in Mg1-xAlxB2

K. D. Belashchenko, V. P. Antropov, Sergey Rashkeev

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Abstract

We calculated the nuclear-spin-lattice relaxation rate in the Mg1-xAlxB2 system and found that the orbital relaxation mechanism dominates over the dipolar and Fermi-contact mechanisms in MgB2, whereas in AlB2 due to a smaller density of states and strong anisotropy of boron p orbitals the relaxation is completely determined by Fermi-contact interaction. The results for MgB2 are compared with existing experimental data. To validate the theory, nuclear resonance experiments for the studied diboride alloy system are needed.

Original languageEnglish
Article number132506
Pages (from-to)1325061-1325063
Number of pages3
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume64
Issue number13
Publication statusPublished - 1 Oct 2001
Externally publishedYes

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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