Related Experiment Video
Updated: Aug 8, 2026

Measurement of Coherence Decay in GaMnAs Using Femtosecond Four-wave Mixing
Published on: December 3, 2013
Magnetic density of states at low energy in geometrically frustrated systems
A Yaouanc1, P Dalmas de Réotier, V Glazkov
1CEA/DSM/Département de Recherche Fondamentale sur la Matière Condensée, Grenoble, France.
Abstract:
Using muon-spin-relaxation measurements we show that the pyrochlore compound Gd(2)Ti(2)O(7), in its magnetically ordered phase below approximately 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.
More Related Videos
Related Concept Videos
Valence Bond Theory
Atomic Nuclei: Nuclear Spin State Overview
Atomic Nuclei: Nuclear Spin State Population Distribution
Atomic Nuclei: Nuclear Relaxation Processes
Magnetic Fields
A magnetic field is defined by the force that a charged particle experiences...
Ferromagnetism

