Chemical pressure tuning of URu2Si2 via isoelectronic substitution of Ru with Fe

Das, Pinaki; Kanchanavatee, N.; Helton, J. S.; Huang, K.; Baumbach, R. E.; Bauer, E. D.; White, B. D.; Burnett, V. W.; Maple, M. B.; Lynn, J. W.; Janoschek, M.

doi:10.1103/PhysRevB.91.085122

Chemical pressure tuning of ${URu}_{2} {Si}_{2}$ via isoelectronic substitution of Ru with Fe

Journal Article · Thu Feb 26 00:00:00 EST 2015 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.91.085122· OSTI ID:1193437

Das, Pinaki ^[1]; Kanchanavatee, N. ^[2]; Helton, J. S. ^[3]; Huang, K. ^[2]; Baumbach, R. E. ^[4]; Bauer, E. D. ^[1]; White, B. D. ^[2]; Burnett, V. W. ^[2]; Maple, M. B. ^[2]; Lynn, J. W. ^[5]; Janoschek, M. ^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Univ. of California, San Diego, La Jolla, CA (United States)
The United States Naval Academy, Annapolis, MD (United States); National Institute of Standards and Technology, Gaithersburg, MD (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Florida State Univ., Tallahassee, FL (United States)
National Institute of Standards and Technology, Gaithersburg, MD (United States)

We have used specific heat and neutron diffraction measurements on single crystals of URu_2–xFe_xSi₂ for Fe concentrations x ≤ 0.7 to establish that chemical substitution of Ru with Fe acts as “chemical pressure” P_ch as previously proposed by Kanchanavatee et al. [Phys. Rev. B 84, 245122 (2011)] based on bulk measurements on polycrystalline samples. Neutron diffraction reveals a sharp increase of the uranium magnetic moment at x = 0.1, reminiscent of the behavior at the “hidden order” to large moment antiferromagnetic (LMAFM) phase transition observed at a pressure P_x ≈ 0.5-0.7 GPa in URu₂Si₂. Using the unit cell volume determined from our measurements and an isothermal compressibility κ_T = 5.2×10⁻³ GPa⁻¹ for URu₂Si₂, we determine the chemical pressure P_ch in URu_2-xFe_xSi₂ as a function of x. The resulting temperature T-chemical pressure P_ch phase diagram for URu_2-xFe_xSi₂ is in agreement with the established temperature T-external pressure P phase diagram of URu₂Si₂.

View Accepted Manuscript (DOE)

Research Organization:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

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

Grant/Contract Number:: AC52-06NA25396; FG02-04ER46105

OSTI ID:: 1193437

Alternate ID(s):: OSTI ID: 1179979

Report Number(s):: LA-UR--14-29641

Journal Information:: Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 8 Vol. 91; ISSN 1098-0121; ISSN PRBMDO

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Parasitic Small-Moment Antiferromagnetism and Nonlinear Coupling of Hidden Order and Antiferromagnetism in URu 2 Si 2 Observed by Larmor Diffraction Niklowitz, P. G.; Pfleiderer, C.; Keller, T. Physical Review Letters, Vol. 104, Issue 10 https://doi.org/10.1103/PhysRevLett.104.106406	journal	March 2010
Similarity of the Fermi Surface in the Hidden Order State and in the Antiferromagnetic State of URu 2 Si 2 Hassinger, E.; Knebel, G.; Matsuda, T. D. Physical Review Letters, Vol. 105, Issue 21 https://doi.org/10.1103/PhysRevLett.105.216409	journal	November 2010
Sequential Spin Polarization of the Fermi Surface Pockets in URu 2 Si 2 and Its Implications for the Hidden Order Altarawneh, M. M.; Harrison, N.; Sebastian, S. E. Physical Review Letters, Vol. 106, Issue 14 https://doi.org/10.1103/PhysRevLett.106.146403	journal	April 2011
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Anisotropic electrical resistivity of the magnetic heavy-fermion superconductor URu 2 Si 2 Palstra, T. T. M.; Menovsky, A. A.; Mydosh, J. A. Physical Review B, Vol. 33, Issue 9 https://doi.org/10.1103/physrevb.33.6527	journal	May 1986
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Antiferromagnetic critical pressure in URu 2 Si 2 under hydrostatic conditions Butch, Nicholas P.; Jeffries, Jason R.; Chi, Songxue Physical Review B, Vol. 82, Issue 6 https://doi.org/10.1103/physrevb.82.060408	journal	August 2010
Twofold enhancement of the hidden-order/large-moment antiferromagnetic phase boundary in the URu 2 − x Fe x Si 2 system Kanchanavatee, N.; Janoschek, M.; Baumbach, R. E. Physical Review B, Vol. 84, Issue 24 https://doi.org/10.1103/physrevb.84.245122	journal	December 2011
Hidden and antiferromagnetic order as a rank-5 superspin in URu 2 Si 2 Rau, Jeffrey G.; Kee, Hae-Young Physical Review B, Vol. 85, Issue 24 https://doi.org/10.1103/physrevb.85.245112	journal	June 2012
Nuclear magnetic resonance studies of pseudospin fluctuations in URu 2 Si 2 Shirer, K. R.; Haraldsen, J. T.; Dioguardi, A. P. Physical Review B, Vol. 88, Issue 9 https://doi.org/10.1103/physrevb.88.094436	journal	September 2013
Strict limit on in-plane ordered magnetic dipole moment in URu 2 Si 2 Ross, K. A.; Harriger, L.; Yamani, Z. Physical Review B, Vol. 89, Issue 15 https://doi.org/10.1103/physrevb.89.155122	journal	April 2014
Symmetry and correlations underlying hidden order in URu 2 Si 2 Butch, Nicholas P.; Manley, Michael E.; Jeffries, Jason R. Physical Review B, Vol. 91, Issue 3 https://doi.org/10.1103/physrevb.91.035128	journal	January 2015
Parasitic Small-Moment Antiferromagnetism and Nonlinear Coupling of Hidden Order and Antiferromagnetism in URu 2 Si 2 Observed by Larmor Diffraction Niklowitz, P. G.; Pfleiderer, C.; Keller, T. Physical Review Letters, Vol. 104, Issue 10 https://doi.org/10.1103/physrevlett.104.106406	journal	March 2010
Similarity of the Fermi Surface in the Hidden Order State and in the Antiferromagnetic State of URu 2 Si 2 Hassinger, E.; Knebel, G.; Matsuda, T. D. Physical Review Letters, Vol. 105, Issue 21 https://doi.org/10.1103/physrevlett.105.216409	journal	November 2010
Sequential Spin Polarization of the Fermi Surface Pockets in URu 2 Si 2 and Its Implications for the Hidden Order Altarawneh, M. M.; Harrison, N.; Sebastian, S. E. Physical Review Letters, Vol. 106, Issue 14 https://doi.org/10.1103/physrevlett.106.146403	journal	April 2011
Superconducting and Magnetic Transitions in the Heavy-Fermion System U Ru 2 Si 2 Palstra, T. T. M.; Menovsky, A. A.; Berg, J. van den Physical Review Letters, Vol. 55, Issue 24 https://doi.org/10.1103/physrevlett.55.2727	journal	December 1985
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Effect of Pressure on Tiny Antiferromagnetic Moment in the Heavy-Electron Compound URu 2 Si 2 Amitsuka, H.; Sato, M.; Metoki, N. Physical Review Letters, Vol. 83, Issue 24 https://doi.org/10.1103/physrevlett.83.5114	journal	December 1999
Interplay between Fermi Surface Topology and Ordering in URu 2 Si 2 Revealed through Abrupt Hall Coefficient Changes in Strong Magnetic Fields Oh, Y. S.; Kim, Kee Hoon; Sharma, P. A. Physical Review Letters, Vol. 98, Issue 1 https://doi.org/10.1103/physrevlett.98.016401	journal	January 2007
Exotic Superconducting Properties in the Electron-Hole-Compensated Heavy-Fermion “Semimetal” URu 2 Si 2 Kasahara, Y.; Iwasawa, T.; Shishido, H. Physical Review Letters, Vol. 99, Issue 11 https://doi.org/10.1103/physrevlett.99.116402	journal	September 2007
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