Basal-plane nonlinear susceptibility: A direct probe of the single-ion physics in URu2Si2
Name
Flint-2012-Basal-plane nonlinear susceptibility.pdf
Size
740.71 KB
Format
Adobe PDF
Checksum (MD5)
3d888aac0de365e3697514e5fd41a379
Author(s)
Flint, Rebecca
Chandra, Premala
Coleman, Piers
Date Issued
October 2012
Journal
Physical Review B
Publisher
American Physical Society
Citation
Flint, Rebecca, Premala Chandra, and Piers Coleman. “Basal-plane Nonlinear Susceptibility: A Direct Probe of the Single-ion Physics in URu_{2}Si_{2}.” Physical Review B 86.15 (2012). ©2012 American Physical Society
Version
Final published version
Abstract
he microscopic nature of the hidden order state in URu[subscript 2]Si[subscript 2] is dependent on the low-energy configurations of the uranium ions, and there is currently no consensus on whether it is predominantly 5f[supercript 2] or 5f[supercript 3]. Here we show that measurement of the basal-plane nonlinear susceptibility can resolve this issue; its sign at low temperatures is a distinguishing factor. We calculate the linear and nonlinear susceptibilities for specific 5f[supercript 2] and 5f[supercript 3] crystal-field schemes that are consistent with current experiment. Because of its dual magnetic and orbital character, aΓ[subscript 5] magnetic non-Kramers doublet ground state of the U ion can be identified by χ[subscript 1][superscript c](T)∝χ[subscript 3]⊥(T), where we have determined the constant of proportionality for URu[subscript 2]Si[subscript 2].
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1103/PhysRevB.86.155155
