Ce3Cu3Sb4: a Canted Antiferromagnetic Semimetal |
| P. Wachter, L. Degiorgi, G. Wetzel, H. Schwer, K. Mattenberger Laboratorium für Festkörperphysik, Eidgenössische Technische Hochschule Zürich, 8093 Zürich, Switzerland T. Herrmannsdörfer and P. Fischer Laboratory for Neutron Scattering, Paul Scherrer Institute PSI, 5232 Villigen, Switzerland |
| Full Text PDF |
| It has been claimed by Patil et al., that Ce3Cu3Sb4 is the first Ce-based semiconducting ferromagnet. In this paper it is shown, mainly with Hall effect and far infrared spectroscopy that no gap in the excitation spectrum exists, as well above as below the magnetic ordering temperature. A maximum in the resistivity near TC is due to trapped magnetic polarons. The resistivity is an effect of the mobility of the charge carriers. The structure of the magnetic unit cell has been determined with elastic neutron scattering. |
| DOI: 10.12693/APhysPolA.97.43 PACS numbers: 75.30.-m, 78.20-e, 72.15.Eb, 72.15.Gd |