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11B NMR study of single-crystal MgB2 in the normal conducting phase

✍ Scribed by S. Strässle; J. Roos; M. Mali; H. Keller; J. Karpinski

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
241 KB
Volume
466
Category
Article
ISSN
0921-4534

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✦ Synopsis

Single-crystal magnesium diboride (MgB 2 ) with a transition temperature to superconductivity of T c = 38.4 K was investigated by quadrupole perturbed 11 B nuclear magnetic resonance in a field of 9 T in the normal conducting phase. Experimental values for the electric field gradient tensor, the magnetic shift tensor, and the nuclear spin-lattice relaxation time for boron were obtained. The anisotropy of the nuclear spin-lattice relaxation and the magnetic shift were determined. A positive sign of the electric field gradient was found. Our results show good agreement with published theoretical calculations and in part with experimental nuclear magnetic resonance data from polycrystalline samples.

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