Fauseweh, B.; Groitl, F.; Keller, T.; Rolfs, K.; Tennant, D. A.; Habicht, K.; Uhrig, G. S.: Time-dependent correlations in quantum magnets at finite temperature. Physical Review B 94 (2016), p. 180404/1-6
10.1103/PhysRevB.94.180404
Open Access Version (externer Anbieter)
Abstract:
In this Rapid Communication we investigate the time dependence of the gap mode of copper nitrate at various temperatures.We combine state-of-the-art theoretical calculations with high precision neutron resonance spin-echo measurements to understand the anomalous decoherence effects found previously in this material. It is shown that the time domain offers a complementary view on this phenomenon, which allows us to directly compare experimental data and theoretical predictions without the need of further intensive data analysis, such as (de)convolution.