Electric field gradients of CeMIn5 (M = Co, Rh, Ir) heavy-fermion systems studied by perturbed angular correlations and ab initio electronic structure calculations
- Forker, M.
- Silva, P. R. J.
- Cavalcante, J. T. P. D.
- Cavalcante, F. H. M.
- Ramos, S. M.
- Saitovitch, H.
- Baggio Saitovitch, E.
- Alonso, Roberto Emilio
- Taylor, Marcela Andrea
- Errico, Leonardo Antonio
DOIAbstract
The electric field gradient (EFG) at the highly dilute nuclear probe 111Cd in the heavy fermion systems CeMIn5, M = Co, Rh, and Ir and YCoIn5 has been investigated by perturbed angular correlation (PAC) measurements of the nuclear electric quadrupole interaction (QI) of 111Cd on In sites. Pure and Sn-doped single crystals prepared by In-flux synthesis and polycrystalline samples prepared by arc melting have been studied. The samples were doped with the PAC probe 111Cd by diffusion of the mother isotope 111In. In all samples, several fractions of 111Cd probe nuclei subject to different QI's have been observed, among them a large fraction of 111Cd in unreacted In metal. Detailed calculations of the EFG at In nuclei and at Cd probes on In site...
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