Magnetic density of states at low energy in geometrically frustrated systems
Yaouanc, A. · de Reotier, P. Dalmas · Glazkov, V. · Marin, C. · Bonville, P. · Hodges, J. A. · Gubbens, P. C. M. · Sakarya, S. · Baines, C.
Original · EN
Using muon-spin-relaxation measurements we show that the pyrochlore compound Gd2Ti2O7, in its magnetically orderered phase below 1 K, displays persistent spin dynamics down to temperatures as low as 20 mK. The characteristics of the induced muon relaxation can be accounted for by a scattering process involving two magnetic excitations, with a density of states characterized by an upturn at low energy and a small gap depending linearly on the temperature. We propose that such a density of states is a generic feature of geometrically frustrated magnetic materials.
English translation
This paper has no Arabic translation yet. Be the first: it takes a few seconds, and the result is stored for every future reader.