Publications in Scientific Journals:

H. Michor, D.T. Adroja, E. Bauer, R. Bewley, D. Dobozanov, A.D. Hillier, G. Hilscher, U. Killer, M. Koza, S. Manalo, P. Manuel, M. Reissner, P. Rogl, M. Rotter, E.-W. Scheidt:
"Unusual non-Fermi liquid behavior in CeNi9Ge4*";
Physica B: Condensed Matter, 378-380 (2006), 640 - 643.

English abstract:
Unusual non-Fermi liquid behavior in CeNi9Ge4*

H. Michor a, D.T. Adroja b, E. Bauer a, R. Bewley b, D. Dobozanov a, A.D. Hillier b, G. Hilscher a, U. Killer c, M. Koza d, S. Manalo a, P. Manuel b, M. Reissner a, P. Rogl e, M. Rotter e and E.-W. Scheidt c

a Institut für Festkörperphysik, T.U. Wien, A-1040 Wien, Austria
b ISIS Facility, Rutherford Appleton Laboratory Chilton, Didcot OX11 0QX, UK
c Lehrstuhl für Chemische Physik und Materialwissenschaften, Universität Augsburg, D-86135 Augsburg, Germany
d Institut LaueLangevin, B.P. 156, F-38042, Grenoble Cedex 9, France
e Institut für Physikalische Chemie, Universität Wien, A-1090 Wien, Austria

Available online 28 February 2006.


We report on unusual non-Fermi liquid features of the ternary compound CeNi9Ge4 which exhibits the largest ever recorded value of the electronic specific heat C/T~=5.5J/mol K2 at T=0.08 K in a purely paramagnetic system. The latter is confirmed by μSR measurements down to 30 mK revealing a rather slow simple exponential muon spin depolarisation in zero-field and thus a spatially homogeneous paramagnetic state. The ground state properties and crystal field (CF) splitting of CeNi9Ge4 have been studied by specific heat, magnetic susceptibility as well as muon spin relaxation (μSR) and inelastic neutron spectroscopy (INS).

Keywords: Non-Fermi liquid; Muon spin relaxation; Inelastic neutron scattering

PACS classification codes: 71.27.+a; 75.20.Hr; 78.70.Nx

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