Distinct magnetic spectra in the hidden order and antiferromagnetic phases in URu2-xFexSi2

Butch, Nicholas P.; Ran, Sheng; Jeon, Inho; Kanchanavatee, Noravee; Huang, Kevin; Breindel, Alexander; Maple, M. Brian; Stillwell, Ryan L.; Zhao, Yang; Harriger, Leland; Lynn, Jeffrey W.

doi:10.1103/PhysRevB.94.201102

Distinct magnetic spectra in the hidden order and antiferromagnetic phases in ${URu}_{2 - x} {Fe}_{x} {Si}_{2}$

Journal Article · Mon Nov 07 00:00:00 EST 2016 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.94.201102· OSTI ID:1418497

Butch, Nicholas P. ^[1]; Ran, Sheng ^[2]; Jeon, Inho ^[2]; Kanchanavatee, Noravee ^[2]; Huang, Kevin ^[2]; Breindel, Alexander ^[2]; Maple, M. Brian ^[2]; Stillwell, Ryan L. ^[3]; Zhao, Yang ^[1]; Harriger, Leland ^[4]; Lynn, Jeffrey W. ^[4]

National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States); Univ. of Maryland, College Park, MD (United States)
Univ. of California, San Diego, CA (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States)

We use neutron scattering to compare the magnetic excitations in the hidden order (HO) and antiferromagnetic (AFM) phases in URu_2-xFe_xSi₂ as a function of Fe concentration. The magnetic excitation spectra change significantly between x = 0.05 and x = 0.10, following the enhancement of the AFM ordered moment, in good analogy to the behavior of the parent compound under applied pressure. Prominent lattice-commensurate low-energy excitations characteristic of the HO phase vanish in the AFM phase. The magnetic scattering is dominated by strong excitations along the Brillouin zone edges, underscoring the important role of electron hybridization to both HO and AFM phases, and the similarity of the underlying electronic structure. The stability of the AFM phase is correlated with enhanced local-itinerant electron hybridization.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Univ. of California, San Diego, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)

Grant/Contract Number:: AC52-07NA27344; FG02-04ER46105

OSTI ID:: 1418497

Alternate ID(s):: OSTI ID: 1331032
OSTI ID: 1420287

Report Number(s):: LLNL-JRNL--736530

Journal Information:: Physical Review B, Journal Name: Physical Review B Journal Issue: 20 Vol. 94; ISSN 2469-9950; ISSN PRBMDO

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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