Confirming the Unusual Temperature Dependence of the Electric-Field Gradient in Zn

resumo

The electric-field gradient (EFG) at nuclei in solids is a sensitive probe of the charge distribution. Experimental data, which previously only existed in insulators, have been available for metals with the development of nuclear measuring techniques since about 1970. An early, systematic investigation of the temperature dependence of the EFG in metals, originally based on results for Cd, but then also extended to various other systems, has suggested a proportionality to T-3/2. However, later measurements in the structurally and electronically similar material Zn, which demonstrated much more complex behavior, were largely ignored at the time. The present experimental effort has confirmed the reliability of this unexpected behavior, which was previously unexplained.

palavras-chave

NUCLEAR-QUADRUPOLE INTERACTION; CADMIUM; CD-111; ZN-67

categoria

Crystallography; Materials Science

autores

Haas, H; Zyabkin, D; Schell, J; Dang, TT; Yap, ICJ; Michelon, I; Gaertner, D; Gerami, AM; Noll, C; Beck, R

nossos autores

agradecimentos

This research was funded by the Federal Ministry of Education and Research (BMBF) through grant No. 05K16PGA and by the ISOLDE collaboration.

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