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Raymond Osborn

Senior Physicist


Ray Osborn is a Senior Physicist the Neutron and X-ray Scattering Group in the Materials Science Division of Argonne National Laboratory, where he has worked since 1992.

His research is in the field of strongly correlated electron systems probing spin, charge and orbital correlations using neutrons and x-rays. His scientific interests have included quantum critical scaling in non-Fermi liquid compounds, the role of polaron correlations in colossal magnetoresistance, dynamic frustration in rare earth spin glasses, electron-phonon coupling in charge-density-waves, and the competition between magnetism and superconductivity in iron arsenides. He has also been active in developing new instrumental techniques to further his research goals, such as the development of more efficient methods of measuring single crystal diffuse scattering both with neutrons and high-energy x-rays. In collaboration with Stephan Rosenkranz, he was responsible for the proposal and conceptual design of the Corelli diffractometer at the Spallation Neutron Source.

Osborn, who has more than 190 publications with over 6000 citations, is a Fellow of the American Physical Society and the Neutron Scattering Society of America, and was awarded the University of Chicago Distinguished Performance Award in 2006 for his CMR research. He was a scientific director of the National School of Neutron and X-ray Scattering for seven years. He was one of the original developers of the NeXus data format as a standard for neutron and x-ray scattering data and was the founding chair of the NeXus International Advisory Committee.

Awards, Honors and Memberships

  • Fellow of the American Physical Society
  • Fellow of the Neutron Scattering Society of America
  • University of Chicago Distinguished Performance Award (2006)


  • Physics, B.Sc. with 1st Class Honours, Imperial College of Science and Technology, London, UK, 1979
  • Solid State Physics, Ph.D., University of Southampton, UK, 1989

Professional Service

  • Scientific Director, National School of Neutron and X-ray Scattering (2001-2007).
  • Chair, Publication Committee, International Conference on Strongly Correlated Electron Systems, Ann Arbor, MI (2001).
  • Chair, NeXus International Advisory Committee (2003-2006).
  • Organizer, Workshop on Competing Interactions and Colossal Responses in Transition Metal Compounds,” Telluride, CO (2006).
  • Member, International Advisory Board, International Conference on Strongly Correlated Electron Systems.
  • Member, International Advisory Board, International Collaboration on Advanced Neutron Sources.
  • Member, Publication Committee, International Conference on Neutron Scattering, Sydney.
  • Member, International Advisory Committee, Workshop on New Opportunities for Better User Group Software”.

Selected Invited Talks

  • Coherent Band Excitations Studied With Inelastic Neutron Scattering
    International Conference on Magnetism (ICM 2018)
    San Francisco, CA, July 15-20, 2018
  • Coherent Band Excitations in CePd3
    2018 March Meeting of the American Physical Society
    Los Angeles, CA, March 59, 2018
  • Imaging Nanoscale Disorder in Reciprocal Space
    APS Colloquium

    Argonne, IL, January 11, 2017
  • Evidence for Itinerant Magnetism in the C4 Phase of Hole-Doped Iron Arsenides
International Conference on Spectroscopies in Novel Superconductors”

    Stuttgart, Germany, June 19-24, 2016
  • A Reentrant C4 Phase in Hole-Doped BaFe2As2
    11th International Conference on Materials & Mechanisms of Superconductivity

    Geneva, Switzerland, August 23-28, 2015
  • A New Magnetic Phase in Hole-Doped BaFe2As2: Implications for the Origin of Nematicity 
    2015 March Meeting of the American Physical Society
    San Antonio, TX, 
March 26, 2015
  • Novel Magnetic States Close to the Quantum Phase Transition in Iron Pnictides 
    Workshop on Quantum Criticality in Correlated Materials and Model Systems
    Natal, Brazil, 
July 2131, 2014
  • Neutron Scattering as a Probe of Fermi Surface Nesting in Iron-Based Superconductors 
    2013 March Meeting of the American Physical Society

    Baltimore, MD, March 1822, 2013
  • Unconventional superconductivity in hole-doped BaFe2As2 from inelastic neutron scattering
    Materials and Mechanisms of Superconductivity Conference (M2S 2012)

    Washington, DC, July 29-August 3, 2012
  • Unconventional Superconductivity Cast in Iron 
    25th Anniversary Symposium of EPL
Munich, Germany, May 2-4, 2011
  • The Effect of Fermi Surface Nesting on Resonant Spin Excitations in Ba1-xKxFe2As2 
    13th International Workshop on Vortex Matter in Superconductors

    Chicago, July 31-August 5, 2011
  • The Doping Dependence of Resonant Spin Excitations in Ba1-xKxFe2As2 
    Workshop on Emergent Quantum States in Complex Correlated Matter
    Dresden, Germany, August 23 - 27, 2010
  • Resonant Spin Excitations in Iron Arsenide Superconductors
    Workshop on Competing Interactions and Colossal Responses in Transition Metal Compounds
    Telluride, CO, August 10-14, 2009
  • Resonant Spin Excitations in Iron Arsenide Superconductors
    International Workshop on Iron Related High-Tc Superconductors
    Tokyo, Japan, Jan. 28th, 2009.
  • Spin glass order induced by dynamic frustration in PrAu2Si2
    IOP Meeting on Theoretical and Experimental Magnetism
    Abingdon, UK, August 11-12, 2008
  • Corelli: Single Crystal Diffraction with Elastic Discrimination
    International Conference on Neutron Scattering
    Sydney, Australia, November 27-December 2, 2005
  • The Coupling of Spin and Orbital Degrees of Freedom in a Layered Ruthenate: An Inelastic Neutron Scattering Study
    2004 MRS Fall Meeting
    Boston, MA, November 29-December 3, 2004
  • Prospects for Single Crystal Diffuse Scattering with Elastic Discrimination
    American Conference on Neutron Scattering
    College Park, MD, June 6-10, 2004.
  • Polarized Neutron Studies of Quantum Critical Scaling
    Workshop on Polarised Neutrons and Synchrotron X-rays for Magnetism
    Venice, Italy, August 4-6, 2003.
  • Nanoscale Frustration: Competing Charge, Orbital, and Magnetic Order in Layered CMR Manganites
    2002 Annual Meeting of the American Crystallographic Association
    San Antonio, TX, May 25-30, 2002
  • Phonons and Superconductivity in MgB2
    2002 March Meeting of the American Physical Society
    Indianapolis, IN, March 18-22, 2002
  • Magnetic Inelastic Neutron Scattering - Present Results and Future Trends
    International Workshop on Science in Neutron-arena of JHP
    Tsukuba, Japan, March 26-27, 1996
  • Non-Fermi Liquid Effects in f-Electron Materials
    1996 March Meeting of the American Physical Society
    St. Louis, MO, March 18-22, 1996

Selected Publications

  • Reciprocal Space Imaging of Ionic Correlations in Intercalation Compounds
    M. J. Krogstad, S. Rosenkranz, J. M. Wozniak, G. Jennings, J. P. C. Ruff, J. T. Vaughey, and R. Osborn
    Nat Mater 19, 63 (2020)
  • The relation of local order to material properties in relaxor ferroelectrics
    M. J. Krogstad, P. M. Gehring, S. Rosenkranz, R. Osborn, F. Ye, Y. Liu, J. P. C. Ruff, W. Chen, J. M. Wozniak, H. Luo, O. Chmaissem, Z.-G. Ye, and D. Phelan
    Nat Mater 48, 1 (2018).
  • Coherent Band Excitations in CePd3: A Comparison of Neutron Scattering and ab initio Theory
    E. A. Goremychkin, H.-W. Park, R. Osborn, S. Rosenkranz, J.-P. Castellan, V. R. Fanelli, A. D. Christianson, M. B. Stone, E. D. Bauer, K. J. McClellan, D. D. Byler, J. M. Lawrence
    Science 359, 186 (2018).
  • Double-Q spin-density wave in iron arsenide superconductors
    J. M. Allred, K. M. Taddei, D. E. Bugaris, M. J. Krogstad, S. H. Lapidus, D. Y. Chung, H. Claus, M. G. Kanatzidis, D. E. Brown, J. Kang, R. M. Fernandes, I. Eremin, S. Rosenkranz, O. Chmaissem, and R. Osborn

Nat Phys 12, 493-498 (2016).
  • Emergence of coherence in the charge-density wave state of 2H-NbSe2
    U. Chatterjee, J. Zhao, M. Iavarone, R. Di Capua, J.-P. Castellan, G. Karapetrov, C. D. Malliakas, M. G. Kanatzidis, H. Claus, J. P. C. Ruff, F. Weber, J. van Wezel, J.-C. Campuzano, R. Osborn, M. Randeria, N. Trivedi, M. R. Norman, and S. Rosenkranz

Nat Comm 6, 6313 (2015).
  • Magnetically driven suppression of nematic order in an iron-based superconductor 
    S. Avci, O. Chmaissem, J.M. Allred, S. Rosenkranz, I. Eremin, A.V. Chubukov, D.E. Bugaris, D.Y. Chung, M.G. Kanatzidis, J.-P Castellan, J.A. Schlueter, H. Claus, D.D. Khalyavin, P. Manuel, A. Daoud-Aladine and R. Osborn
    Nat Comm 5, 3845 (2014).
  • Chiral Phase Transition in Charge Ordered 1T-TiSe2 
    John-Paul Castellan, Stephan Rosenkranz, Ray Osborn, Qing’an Li, K. E. Gray, X. Luo, U. Welp, Goran Karapetrov, J. P. C. Ruff, and Jasper van Wezel
    Phys Rev Lett 110, 196404 (2013).
  • Phase diagram of Ba1−xKxFe2As2 
    S. Avci, O. Chmaissem, D. Y. Chung, S. Rosenkranz, E. A. Goremychkin, J.-P. Castellan, I. S. Todorov, J. A. Schlueter, H. Claus, A. Daoud-Aladine, D. D. Khalyavin, M. G. Kanatzidis, and R. Osborn
    Phys Rev B 85, 184507 (2012).
  • Electron-Phonon Coupling and the Soft Phonon Mode in TiSe2 
    F. Weber, S. Rosenkranz, J.-P. Castellan, R. Osborn, G. Karapetrov, R. Hott, R. Heid, K.-P. Bohnen, and A. Alatas
    Phys Rev Lett 107, 266401 (2011).
  • Effect of Fermi Surface Nesting on Resonant Spin Excitations in Ba1-xKxFe2As2
    J.-P. Castellan, S. Rosenkranz, E. Goremychkin, D. Chung, I. Todorov, M. Kanatzidis, I. Eremin, J. Knolle, A. V. Chubukov, S. Maiti, M. Norman, F. Weber, H. Claus, T. Guidi, R. I. Bewley, and R. Osborn
    Phys Rev Lett 107, 177003 (2011).
  • The Transition from Heavy Fermion to Mixed Valence in Ce1−xYxAl3: A Quantitative Comparison with the Anderson Impurity Model 
    E. A. Goremychkin, R. Osborn, I. L. Sashin, P. Riseborough, B. D. Rainford, D. T. Adroja, J. M. Lawrence
    Phys Rev Lett 104, 176402 (2010).
  • Inelastic neutron scattering studies of the spin and lattice dynamics in iron arsenide compounds 
    R. Osborn, S. Rosenkranz, E. A. Goremychkin, A. D, Christianson
    Physica C 469, 498-506 (2009).
  • Two-dimensional resonant magnetic excitation in BaFe1.84Co0.16As2
    M. D. Lumsden, A. D. Christianson, D. Parshall, M. B. Stone, S. E. Nagler, G. J. Macdougall, H. A. Mook, K. Lokshin, T. Egami, D. L. Abernathy, E. A. Goremychkin, R. Osborn, M. A. McGuire, A. S. Sefat, R. Jin, B. C. Sales, D. Mandrus
    Phys Rev Lett 102, 107005 (2009).
  • Unconventional superconductivity in Ba0.6K0.4Fe2As2 from inelastic neutron scattering
    A. D. Christianson, E. A. Goremychkin, R. Osborn, S. Rosenkranz, M. D. Lumsden, C. D. Malliakas, I. S. Todorov, H. Claus, D. Y. Chung, M. G. Kanatzidis, R. I. Bewley, and T. Guidi
    Nature 456, 930-932 (2008).
  • Spin-glass order induced by dynamic frustration
    E. A. Goremychkin, R. Osborn, B. D. Rainford, R. T. Macaluso, D. T. Adroja, and M. Koza
    Nat Phys 4, 766-770 (2008).
  • Reentrant orbital order and the true ground state of LaSr2Mn2O7
    Q. Li, K. E. Gray, H. Zheng, H. Claus, S. Rosenkranz, S. N. Ancona, R. Osborn, J. F. Mitchell, Y. Chen and J. W. Lynn
    Phys Rev Lett 98, 167201 (2007).
  • First-order metal-insulator transitions in manganites: Are they universal?
    Q. A. Li, K. E. Gray, S. N. Ancona, H. Zheng, S. Rosenkranz, R. Osborn and J. F. Mitchell
    Phys Rev Lett 96, 087201 (2006).
  • Crystal field potential of PrOs4Sb12: Consequences for superconductivity
    E. A. Goremychkin, R. Osborn, E. D. Bauer, M. B. Maple, N. A. Frederick, W. M. Yuhasz, F. M. Woodward and J. W. Lynn
    Phys Rev Lett 93, 157003 (2004).
  • Orbital ordering transition in La4Ru2O10
    P. Khalifah, R. Osborn, Q. Huang, H. W. Zandbergen, R. Jin, Y. Liu, D. Mandrus and R. J. Cava
    Science 297, 2237-2240 (2002).
  • Magnetic correlations and the anisotropic Kondo effect in Ce1-xLaxAl3
    E. A. Goremychkin, R. Osborn, B. D. Rainford, T. A. Costi, A. P. Murani, C. A. Scott and P. J. C. King
    Phys Rev Lett 89, 147201 (2002).
  • Structure of nanoscale polaron correlations in La1.2Sr1.8Mn2O7
    B. J. Campbell, R. Osborn, D. N. Argyriou, L. Vasiliu-Doloc, J. F. Mitchell, S. K. Sinha, U. Ruett, C. D. Ling, Z. Islam and J. W. Lynn
    Phys Rev Lett 65, 014427 (2002).
  • Phonon density of states in MgB2
    R. Osborn, E. A. Goremychkin, A. I. Kolesnikov and D. G. Hinks
    Phys Rev Lett 87, 017005 (2001).
  • Magnetic correlations and the quantum critical point of UCu5-xPdx (x = 1, 1.5)
    M. C. Aronson, R. Osborn, R. Chau, M. B. Maple, B. D. Rainford and A. P. Murani
    Phys Rev Lett 87, 197205 (2001).
  • Evidence for Anisotropic Kondo Behavior in Ce0.8La0.2Al3 E. A. Goremychkin, R. Osborn, B. D. Rainford and A. P. Murani
    Phys Rev Lett 84, 2211-2214 (2000).
  • Charge melting and polaron collapse in La1.2Sr1.8Mn2O7
    L. Vasiliu-Doloc, S. Rosenkranz, R. Osborn, S. K. Sinha, J. W. Lynn, J. Mesot, O. H. Seeck, G. Preosti, A. J. Fedro and J. F. Mitchell
    Phys Rev Lett 83, 4393-4396 (1999).
  • Neutron scattering investigation of magnetic bilayer correlations in La1.2Sr1.8Mn2O7: Evidence of Canting above TC
    R. Osborn, S. Rosenkranz, D. N. Argyriou, L. Vasiliu–Doloc, J. W. Lynn, S. K. Sinha, J. F. Mitchell, K. E. Gray and S. D. Bader
    Phys Rev Lett 81, 3964-3967 (1998).
  • Non-Fermi liquid scaling of the magnetic response in UCu5-xPdx (x=1,1.5)
    M. C. Aronson, R. Osborn, R. A. Robinson, J. W. Lynn, R. Chau, C. L. Seaman and M. B. Maple Phys Rev Lett 75, 725-728 (1995).
  • Crystal-Field Excitations in CeCu2Si2
    E. A. Goremychkin and R. Osborn
    Phys Rev Lett 47, 14280-14290 (1993).
  • Intermultiplet transitions using neutron spectroscopy
    R. Osborn, S. W. Lovesey, A. D. Taylor and E. Balcar
    Handbook on the Physics and Chemistry of Rare Earths, edited by K. A. Gschneidner, Jr. and L. Eyring (North-Holland, Amsterdam, 1991), Vol. 14, p. 1-61.
  • Intermultiplet transitions in praseodymium using neutron spectroscopy
    A. D. Taylor, R. Osborn, K. A. McEwen, W. G. Stirling, Z. A. Bowden, W. G. Williams, E. Balcar and S. W. Lovesey
    Phys Rev Lett 61, 1309-1312 (1988).
  • Observation of oxygen Frenkel disorder in uranium dioxide above 2000K by use of neutron-scattering techniques
    K. Clausen, W. Hayes, J. E. Macdonald, R. Osborn and M. T. Hutchings
    Phys Rev Lett 52, 1238 (1984).