Gapped excitations in the high-pressure antiferromagnetic phase of URu2Si2

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DOI	Resolve DOI: https://doi.org/10.1103/PhysRevB.95.195171
Author	Search for: Williams, T. J.; Search for: Barath, H.; Search for: Yamani, Z.¹; Search for: Rodriguez-Riviera, J. A.; Search for: Leão, J. B.; Search for: Garrett, J. D.; Search for: Luke, G. M.; Search for: Buyers, W. J. L.¹; Search for: Broholm, C.
Name affiliation	National Research Council of Canada. Security and Disruptive Technologies
Format	Text, Article
Abstract	We report a neutron scattering study of the magnetic excitation spectrum in each of the three temperature and pressure driven phases of URu2Si2. We find qualitatively similar excitations throughout the (H0L) scattering plane in the hidden-order and large-moment phases, with no changes in the ℏω widths of the excitations at the Σ=(1.407,0,0) and Z=(1,0,0) points, within our experimental resolution. There is, however, an increase in the gap at the Σ point from 4.2(2) meV to 5.5(3) meV, consistent with other indicators of enhanced antiferromagnetism under pressure.
Publication date	2017-05-31
Publisher	American Physical Society
In	Physical Review B 95, no. 19.
Language	English
Peer reviewed	Yes
NPARC number	23003084
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Record identifier	1a59c606-9d59-47ed-888b-fc23c99bce80
Record created	2018-04-19
Record modified	2020-05-30