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Jose A Rodriguez

The NIST Center for Neutron Research (NCNR) is a user facility that focuses on providing neutron measurement capabilities to the US research community. I am the instrument scientist of the Multi-Axis Crystal Spectrometer (MACS), a new world class neutron scattering spectrometer with high capabilities such as a very high neutron flux and fast data collection. My program research includes the areas of diffuse scattering of binary alloys, neutron instrumentation and the research of magnetic materials using neutron scattering.

Selected Publications

  1. "Spin-orbital quantum fluctuations on a honeycomb based lattice" by S. Nakatsuji, K. Kuga, K. Kimura, R. Satake, E. Nishibori, H. Sawa, R. Ishii, M. Hagiwara, F. Bridges, T. U. Ito, W. Higemoto, M. Halim, A. Nugroho , J. A. Rodriguez-Rivera, M. A. Green and C. Broholm. Science 336 (6081): 559-563 (2012).  
  2. "Friedel-like Oscillations from Interstitial Iron in Superconducting Fe1+yTe0.62Se0.38"  by V. Thampy, J. Kang, J. A. Rodriguez-Rivera, W. Bao, A. T. Savici, J. Hu, T. J. Liu, B. Qian, D. Fobes, Z. Q. Mao, C. B. Fu, W. C. Chen, Q. Ye, R. W. Erwin, T. R. Gentile, Z. Tesanovic, and C. Broholm. Phys. Rev. Lett. 108 107002 (2012)  
  3. "Common origin of two magnetic fluctuations in iron chalcogenides" by Songxue Chi, J. A. Rodriguez-Rivera, J. W. Lynn, Chenglin Zhang, D. Phelan, D. K. Singh, R. Paul, and Pengcheng Dai. Phys. Rev. B. 84, 214407 (2011)  
  4. "Neutron Scattering Studies of spin excitations in hole-doped Ba0.67K0.33Fe2As2 superconductor" by Chenglin Zhang, Meng Wang, Miaoyin Wang, Mengshu Liu, Jun Zhao, D. L. Abernathy, Karol Marty, M. D. Lumsden, Songxue Chi, Sung Chang, J. A. Rodriguez-Rivera, J. W. Lynn, Huiqian Luo, Tao Xiang, Jiangping Hu, Pengcheng Dai. Sci. Rep. 1,115 (2011)  
  5. "Field-Induced Quantum Fluctuations in Heavy Fermion (Pressure- Induced)Superconductor CeCu2Ge2" by D.K. Singh, A. Thamizhavel, J.W. Lynn, J. A. Rodriguez-Rivera, and T. Herman. Sci. Rep. 1, 117 (2011)  
  6. "Interstitial iron tuning of the spin fluctuations in the nonsuperconductive parent phase Fe1+xTe"by Chris Stock, Efrain E. Rodriguez, Mark A. Green and Jose A. Rodriguez-Rivera. Phys. Rev. B 84, 045124 (2011)  
  7. "Incommensurate Magnetism in FeAs Strips: Neutron Scattering from CaFe4As3" by Yusuke Nambu, Liang L. Zhao, Emilia Morosan, Kyoo Kim, Gabriel Kotliar, Pawel Zajdel, Mark A. Green, William Ratcliff. Jose A. Rodriguez-Rivera, and Collin Broholm , Phys. Rev. Lett. 106, 037201 (2011). Phys. Rev. Lett. 106, 037201 (2011)  
  8. "Magnetic field effect on the static antiferromagnetic order and spin excitations in underdoped iron arsenide superconductor BaFe1.92Ni0.08As2" Miaoyin Wang, Huiqian Luo, Meng Wang, Songxue Chi, J. A. Rodriguez-Rivera, Deepak Singh, Sung Chang, Jeffrey W. Lynn, and Pengcheng Dai, Phys. Rev. B 83, 094516 (2011)  
  9. "Quantum critical behavior in the heavy Fermion single crystal Ce(Ni0.935P 0.065)2Ge2" by C. H. Wang, J. M. Lawrence, A. D. Christianson, S. Chang, E. D. Bauer, K. Gofryk, F. Ronning, J. D. Thompson, K. J. McClellan, J. A. Rodriguez-Rivera, J. W. Lynn. J. Phys.: Conf. Ser. 273 012018 (2011).  
  10. "A wide angle neutron spin filter system using polarized 3He" by C.B. Fu, T.R. Gentile, G.L. Jones, W.C. Chen, R. Erwin, S. Watson, C. Broholm, J.A. Rodriguez-Rivera, and J. Scherschligt, Physica B 406, 2419 (2010).  
  11. "From (π, 0) magnetic order to superconductivity with (π, π) magnetic resonance in Fe1.02(Te1-xSex)" by Tijiang Liu , Jin Hu , Bin Qian , David Fobes , Wei Bao , Manfred Reehuis , Simon Kimber , Karel Prokes , Slavomir Matas , Dimitri Argyriou , Arno Hiess , Aurelian Rotaru , Huy Pham , Leonard Spinu , Yiming Qiu , Vivek Thampy, Andrei Savici, Jose Rodriguez-Rivera, Collin Broholm. Nature Materials 9, 718-720 (2010).  
  12. "Low symmetry DO3-like nanoprecipitates in highly magnetostrictive Galfenol observed by neutron diffuse scattering" by Hu Cao, Peter M. Gehring, Christopher P. Devreugd, J. A. Rodriguez-Rivera, Jiefang Li, and D. Viehland. Phys. Rev. Lett. (2009) 102, 127201  
  13. "Neutron Transmission of Single-Crystal Magnesium Fluoride" by J.G. Barker, D.F.R. Mildner J. A. Rodriguez and P. Thiyagarajan. Appl. Cryst. (2008). 41, 1003-1008  
  14. "MACS- A new high intensity cold neutron spectrometer at NIST"  by J. A. Rodriguez, D. M. Adler, P. C. Brand, C. Broholm, J. C. Cook, C. Brocker, R. Hammond, Z. Huang, P. Hundertmark, J. W. Lynn, N. C. Maliszewskyj, J. Moyer, J. Orndorff, D. Pierce, T. D. Pike, G. Scharfstein, S. A. Smee and R. Vilaseca. Meas. Sci. Technol. 19 (2008) 034023.  
  15. "Neutron scattering studies of short-range order, atomic displacements, and effective pair Interactions in a null-matrix 62Ni0.52Pt0.48 crystal". J. A. Rodriguez, S. C Moss, J. L. Robertson, J. R. D. Copley, D. A. Newmann and J. Major. Phys. Rev. B 74, 104115 (2006)


Low-Energy Magnons in the Chiral Ferrimagnet Cu2OSeO3: A Coarse-Grained Approach

Yi Luo, G. G. Marcus, Benjamin A Trump, J. Kindervater, M. B. Stone, Jose A. Rodriguez, Yiming Qiu, T. M. McQueen, O. Tchernyshyov, Collin L. Broholm
We report a comprehensive neutron scattering study of low energy magnetic excitations in the breathing pyrochlore helimagnetic Cu2OSeO3. Fully documenting the
Created December 11, 2018