Title
Phase diagram and thermal expansion measurements on the system URu2−xFexSi2
Document Type
Article
Department or Administrative Unit
Physics
Publication Date
11-22-2016
Abstract
The identity of the order parameter of the hidden-order (HO) phase in the heavy fermion compound URu2Si2 remains a long-standing mystery. The HO phase is intimately related to the large-moment antiferromagnetic (LMAFM) phase that is induced under pressure. Although these two phases presumably have distinct order parameters, their transport and thermodynamic properties are nearly indistinguishable. The measurements reported herein reveal that the HO and LMAFM phase transitions are manifested differently in the uniaxial thermal expansion coefficients and uniaxial pressure derivatives of the transition temperature. These results suggest that an itinerant effective model should include band states of different orbital and magnetic characters, if it is to describe the differing responses of the competing ordered phases to uniaxial pressure.
Recommended Citation
Ran, S., Wolowiec, C. T., Jeon, I., Pouse, N., Kanchanavatee, N., White, B. D., Huang, K., Martien, D., DaPron, T., Snow, D., Williamsen, M., Spagna, S., Riseborough, P. S., & Maple, M. B. (2016). Phase diagram and thermal expansion measurements on the system URu2−xFexSi2. Proceedings of the National Academy of Sciences, 113(47), 13348–13353. https://doi.org/10.1073/pnas.1616542113
Journal
Proceedings of the National Academy of Sciences
Rights
Copyright © The Authors 2016
Comments
This article was originally published in Proceedings of the National Academy of Sciences. The full-text article from the publisher can be found here.
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