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Lattice dynamics and magneto-elastic coupling in Kondo-insulator YbB12

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, , Citation A V Rybina et al 2007 J. Phys.: Conf. Ser. 92 012074 DOI 10.1088/1742-6596/92/1/012074

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1 RRC "Kurchatov Institute", Kurchatov sq. 1, 123182 Moscow, Russia

2 Laboratoire Léon Brillouin, CEA/Saclay, F-91191 Gif sur Yvette, France

3 ISIS, RAL, Didcot, Oxon OX110QX, UK

4 IPMS, NASU, 252142 Kiev, Ukraine

5 ADSM, Hiroshima University, Higashi Hiroshima, 739-8530, Japan

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1742-6596/92/1/012074

Abstract

Lattice dynamics and magneto-elastic coupling effects have been studied in the Kondo insulator YbB12 by means of inelastic neutron scattering. The analysis of the phonon density of states, dispersion, and symmetry properties is presented in connection with a possible magneto-elastic coupling. Manifestation of such effects was found for the phonons corresponding to the vibrations of Yb atoms.

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10.1088/1742-6596/92/1/012074