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|Title:||Unexpected Phase Locking of Magnetic Fluctuations in the Multi-k Magnet USb|
|Authors:||LIM J. A.; BLACKBURN E.; MAGNANI Nicola; HIESS A.; REGNAULT L.-P.; CACIUFFO Roberto; LANDER G.h.|
|Citation:||PHYSICAL REVIEW B vol. 87 no. 6 p. 064421-1 - 064421 -5|
|Publisher:||AMER PHYSICAL SOC|
|Type:||Articles in periodicals and books|
|Abstract:||The spin waves in the multi-k antiferromagnet, USb, soften and become quasielastic well below the AFM ordering temperature TN. This occurs without a magnetic or structural transition. It has been suggested that this change is in fact due to de-phasing of the different multi-k components: a switch from 3-k to 1-k behavior. In this work, we use inelastic neutron scattering with tridirectional polarisation analysis to probe the quasielastic magnetic excitations and reveal that the 3-k structure does not de-phase. More surprisingly, the paramagnetic correlations also maintain the same clear phase correlations well above TN (up to at least 1:4 TN).|
|JRC Directorate:||Nuclear Safety and Security|
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