Hidden order signatures in the antiferromagnetic phase of U(Ru1-xFex)2Si2

Williams, Travis J.; Aczel, Adam A.; Stone, Matthew B.; Wilson, Murray N.; Luke, Graeme M.

doi:10.1103/PhysRevB.95.104440

Title: Hidden order signatures in the antiferromagnetic phase of $U {({Ru}_{1 - x} {Fe}_{x})}_{2} {Si}_{2}$

Abstract

We present a comprehensive set of elastic and inelastic neutron scattering measurements on a range of Fe-doped samples of U(Ru_1–xFe_x)₂Si₂ with 0.01 ≤ x ≤ 0.15. All of the samples measured exhibit long-range antiferromagnetic order, with the size of the magnetic moment quickly increasing to 0.51μB at 2.5% doping and continuing to increase monotonically with doping, reaching 0.69μB at 15% doping. Time-of-flight and inelastic triple-axis measurements show the existence of excitations at (1 0 0) and (1.4 0 0) in all samples, which are also observed in the parent compound. While the excitations in the 1% doping are quantitatively identical to the parent material, the gap and width of the excitations change rapidly at 2.5% Fe doping and above. The 1% doped sample shows evidence for a separation in temperature between the hidden order and antiferromagnetic transitions, suggesting that the antiferromagnetic state emerges at very low Fe dopings. Finally, the combined neutron scattering data suggest not only discontinuous changes in the magnetic moment and excitations between the hidden order and antiferromagnetic phases, but that these changes continue to evolve up to at least x = 0.15.

Authors:

Williams, Travis J. ^[1]; Aczel, Adam A. ^[1]; Stone, Matthew B. ^[1]; Wilson, Murray N. ^[2]; Luke, Graeme M. ^[3]

Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
McMaster Univ., Hamilton, ON (Canada)
McMaster Univ., Hamilton, ON (Canada); Canadian Institute for Advanced Research, Toronto, ON (Canada)

Publication Date:: 2017-03-31

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)

Sponsoring Org.:: USDOE Laboratory Directed Research and Development (LDRD) Program

OSTI Identifier:: 1351756

Alternate Identifier(s):: OSTI ID: 1349538

Grant/Contract Number:: AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review B

Additional Journal Information:: Journal Volume: 95; Journal Issue: 10; Journal ID: ISSN 2469-9950

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats


                    Williams, Travis J., Aczel, Adam A., Stone, Matthew B., Wilson, Murray N., and Luke, Graeme M. Hidden order signatures in the antiferromagnetic phase of U(Ru1-xFex)2Si2.  United States: N. p., 2017. 
Web.  doi:10.1103/PhysRevB.95.104440.

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                    Williams, Travis J., Aczel, Adam A., Stone, Matthew B., Wilson, Murray N., & Luke, Graeme M. Hidden order signatures in the antiferromagnetic phase of U(Ru1-xFex)2Si2.  United States.  https://doi.org/10.1103/PhysRevB.95.104440

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                    Williams, Travis J., Aczel, Adam A., Stone, Matthew B., Wilson, Murray N., and Luke, Graeme M. Fri .  
"Hidden order signatures in the antiferromagnetic phase of U(Ru1-xFex)2Si2".  United States.  https://doi.org/10.1103/PhysRevB.95.104440.  https://www.osti.gov/servlets/purl/1351756.

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@article{osti_1351756,

  title        = {Hidden order signatures in the antiferromagnetic phase of U(Ru1-xFex)2Si2},

  author       = {Williams, Travis J. and Aczel, Adam A. and Stone, Matthew B. and Wilson, Murray N. and Luke, Graeme M.},

  abstractNote = {We present a comprehensive set of elastic and inelastic neutron scattering measurements on a range of Fe-doped samples of U(Ru1–xFex)2Si2 with 0.01 ≤ x ≤ 0.15. All of the samples measured exhibit long-range antiferromagnetic order, with the size of the magnetic moment quickly increasing to 0.51μB at 2.5% doping and continuing to increase monotonically with doping, reaching 0.69μB at 15% doping. Time-of-flight and inelastic triple-axis measurements show the existence of excitations at (1 0 0) and (1.4 0 0) in all samples, which are also observed in the parent compound. While the excitations in the 1% doping are quantitatively identical to the parent material, the gap and width of the excitations change rapidly at 2.5% Fe doping and above. The 1% doped sample shows evidence for a separation in temperature between the hidden order and antiferromagnetic transitions, suggesting that the antiferromagnetic state emerges at very low Fe dopings. Finally, the combined neutron scattering data suggest not only discontinuous changes in the magnetic moment and excitations between the hidden order and antiferromagnetic phases, but that these changes continue to evolve up to at least x = 0.15.},

  doi          = {10.1103/PhysRevB.95.104440},

  journal      = {Physical Review B},

  number       = 10,

  volume       = 95,

  place        = {United States},

  year         = {2017},

  month        = {3}

}

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Works referencing / citing this record:

Hidden order and beyond: an experimental—theoretical overview of the multifaceted behavior of URu ₂ Si ₂
journal, January 2020

Mydosh, J. A.; Oppeneer, P. M.; Riseborough, P. S.
Journal of Physics: Condensed Matter, Vol. 32, Issue 14
DOI: 10.1088/1361-648x/ab5eba

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Title: Hidden order signatures in the antiferromagnetic phase of U ( Ru 1 - x Fe x ) 2 Si 2

Abstract

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Field Reentrance of the Hidden Order State of URu 2 Si 2 under Pressure journal, May 2009

The suppression of hidden order and the onset of ferromagnetism in URu 2 Si 2 via Re substitution journal, March 2010

Twofold enhancement of the hidden-order/large-moment antiferromagnetic phase boundary in the URu 2 − x Fe x Si 2 system journal, December 2011

Distinct magnetic spectra in the hidden order and antiferromagnetic phases in URu 2 − x Fe x Si 2 journal, November 2016

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Gapped itinerant spin excitations account for missing entropy in the hidden order state of URu$_2$Si$_2$ text, January 2007

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Single Uranium-Site Properties of the Dilute Heavy Electron System U _x Th _{1- x} Ru ₂ Si ₂ ( x ≤0.07)
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Similarity of the Fermi Surface in the Hidden Order State and in the Antiferromagnetic State of ${URu}_{2} {Si}_{2}$
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Magnetic excitations in the heavy-fermion superconductor ${URu}_{2}$ ${Si}_{2}$
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The suppression of hidden order and the onset of ferromagnetism in URu ₂ Si ₂ via Re substitution
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Pressure effect on the magnetic field-temperature phase diagram of
journal, April 2008

Gapped itinerant spin excitations account for missing entropy in the hidden order state of URu$_2$Si$_2$
text, January 2007

Field Reentrance of the Hidden Order State of URu2Si2 under Pressure
text, January 2009

The suppression of hidden order and onset of ferromagnetism in URu2Si2 via Re substitution
text, January 2010

Precise study of the resonance at Q0=(1,0,0) in URu2Si2
text, January 2010

Hidden Order Behaviour in URu2Si2 (A Critical Review of the Status of Hidden Order in 2014)
text, January 2014

Hidden order and beyond: an experimental—theoretical overview of the multifaceted behavior of URu ₂ Si ₂
journal, January 2020