home
 
  curriculum vitae
 
  research
 
  teaching
 
  publications
 
  seminars & talks
 
  contact info
 
  MACS Project
   

Seminars | Invited Talks at International Meetings

Seminars and Colloquia

  1. "Quantum magnets confined to the nano-scale", University of Austin, workshop on strongly correlated electrons, October 12 (2007).

  2. "Applying Spin", Annual meeting of the SNS and HFIR Users Group, Oak Ridge, TN, October 8 (2007).

  3. "Ferroelectricity in Frustrated Magnets", Max Planck Institute for the Chemical Physics of Solids, Dresden July 19 (2007).

  4. "Spin Resonance in the d-wave Superconductor CeCoIn5", Max Planck Institute for the Chemical Physics of Solids, Dresden July 19 (2007).

  5. "Scattering Neutrons from Magnons, Spinons, Solitons, and Breathers", NIST Summer school on neutron scattering, June 28 (2007).

  6. "Ferroelectricity in Frustrated Magnets", Institute for Solid State Physics, Kashiwa Campus, University of Tokyo, May 22, (2007).

  7. "Ferroelectricity in Frustrated Magnets", Princeton University, December 4, (2006).

  8. "Ferroelectricity in Frustrated Magnets", MRSEC workshop presentation at the University of Maryland November 17, (2006).

  9. "Ferroelectricity in Frustrated Magnets", Condensed Matter Physics Colloquium at Louisiana State University, November 16, (2006).

  10. "Ferroelectricity in Frustrated Magnets", Condensed Matter Physics Seminar at the University of Virginia, October 5, (2006).

  11. "Science with Intense Polarized Neutrons", NIST Expansion Initiative meeting, Bethesda, MD July 17 (2006). [View: PPT | PDF]

  12. "Neutron Scattering, Correlation Functions, & Linear Response Functions", Summer School on Neutron Scattering, Deep River, Ontario, Canada, June 6 (2006). [View: PPT | PDF]

  13. "Spinons, Solitons and Breathers in Quasi-One-Dimensional Magnet", Symposium for W. J. L . Buyers, Deep River, Ontario, Canada June 4 (2006). [View: PPT | PDF]

  14. "Science with Intense Polarized Neutrons", Invited talk at NIST Center for Neutron Research Expansion Meeting, Baltimore, MD March 14 (2006). [View: PPT | PDF]

  15. "Magnetic Surprises on a Triangular Lattice", Condensed Matter Physics Seminar, Rutgers University, November 15 (2005). [View: PPT | PDF]

  16. "Frustrated Quantum Magnetism", Presentation to the Faculty of the Department of Physics and Astronomy, Johns Hopkins University, April 28 (2005).

  17. "Cold Neutron Spectroscopy on MACS", talk presented to NSF panel evaluating the renewal proposal for the Center for High Resolution Neutron Scattering at NIST. January 5 (2005). [View: PPT | PDF]

  18. "Inhomogeneous Level Splitting in Pr1-xBixRu2O7", Paul Scherrer Institute, Switzerland, December 3, (2004). [View: PPT | PDF]

  19. "Spinons, Solitons, and Breathers in Quasi-One-Dimensional Magnets", Department of Physics and Astronomy, Temple University, October 11 (2004). [View: PPT | PDF]

  20. "Striving for Excellence with MACS", Presentation to the director of the Materials Science and Engineering Laboratory, NIST, June 17 (2004).  [View: PPT | PDF]

  21. "Spinons, Solitons, and Breathers in Quasi-One-Dimensional Magnets", Department of Physics and Astronomy, Johns Hopkins University, April 8, (2004). [View: PPT | PDF]

  22. "Spinons, Solitons, and Breathers in Quasi-One-Dimensional Magnets", Dartmouth College, Hanover, New Hampshire, Jan 30, (2004). [View: PPT | PDF]

  23. "Spin-1/2 chains in Uniform and Staggered Fields", Braunschweig Technical University, Braunschweig, Germany, Jan 19, (2004). [View: PPT | PDF]

  24. "Quantum Coherence in Magnets", Colloquium in the Department of Physics, University of Virginia, November 21 (2003). [View: PPT | PDF]

  25. "Satisfied Simplexes in Frustrated Magnets", Department of Physics, Kyoto University, Kyoto Japan, October 30 (2003).  [View: PPT | PDF]

  26. "Composite Spin in Fluctuating magnets", Colloquium in the department of Physics and Astronomy, Kent State University, April 17 (2003). [View: PPT | PDF]

  27. “Realizing Neutron Vision - a compact digital camera for radiography", talk to JHU senior project engineering students, September 20, (2002). [View: PPT | PDF]

  28. "MACS concept presentation", NIST Center for Neutron Research, September 24 (2002).  [View: PPT | PDF]

  29. "Two and Three Dimensional Spin Systems with an Isolated Singlet Ground State", ISIS meeting on neutron spectroscopy and MERLIN, June 11 (2002). [View: PPT | PDF]

  30. "Experimental Planning, Visualization, and Analysis for Condensed Matter Physicists", ARCS software workshop, Caltech, March 15 (2002). [View: PPT | PDF]

  31. “Quantum Phase Transition in a Two-Dimensional Frustrated Magnet”, Seminar, AECL, Chalk River, Canada February 15 (2002). [View: PPT | PDF]

  32. "Building MACS", NIST Center for Neutron Research for NSF site visit. January 8, (2002). [View: PPT | PDF]

  33. “Quantum Phase Transition in a Two-Dimensional Frustrated Magnet”, Seminar, National High Magnetic Field Laboratory, Tallahassee, Florida, December 14, (2001). [View: PPT | PDF]

  34. “Quantum Phase Transition in a Two-Dimensional Frustrated Magnet”, Seminar, Yale University, November 29, (2001). [View: PPT | PDF]

  35. “Magnets without direction”, Colloquium, Department of Physics and Astronomy, Rutgers University, October 17, (2001). [View: PPT | PDF]

  36. “Magnets without direction”, Colloquium, Department of Physics, Georgetown University, September 27, (2001). [View: PPT | PDF]
     
  37. “Holes in a Quantum Spin Liquid”, Condensed Matter Seminar Princeton University, March 2 (2001). [View: PPT | PPT]
     
  38. “Resolving a Magnetic Quandary”, Condensed Matter seminar NEC Research Institute, November 3 (2000). [View: PPT | PDF]
     
  39. “One Dimensional Magnetic Systems”, Solid State Sciences Advisory Committee to the National Academy of Sciences, NIST Center for Neutron Research, Gaithersburg, MD June 26 (2000). [View: PPT | PPT]
     
  40. “Holes in a Quantum Spin Liquid”, Condensed Matter Seminar Johns Hopkins University, April 26 (2000). [View: PPT | PDF]
     
  41. “Holes in a Quantum Spin Liquid”, Colloquium Waterloo University, Canada April 13 (2000). [View: PPT | PDF]
     
  42. “Holes in a Quantum Spin Liquid”, Colloquium McMaster University, Canada April 12 (2000). [View: PPT | PDF]
     
  43. “Impurities and finite temperature effects in a one-dimensional spin-1 antiferromagnet”, National High Magnetic Field Laboratory, November 19 (1999) [View: PPT | PDF]
     
  44. “Inelastic Neutron Scattering: Science and Instrumentation”, Presentation to a panel organized by the National Research Council about facilities for Materials Research. National Academy of Sciences, Washington DC January 11 1999. [View: PPT | PDF]
     
  45. “Excitations in an Alternating Spin-1/2 Chain”, Theoretical Physics Department of Oxford University December 3 (1998). [View: PPT | PDF]
     
  46. “Magnetized States of Quantum Spin Chains”, Workshop on Applications of Polarized X-rays, Advanced Photon Source, Argonne National Laboratory, September 28-29 (1998). [View: PPT | PDF]
     
  47. “Proposal for a High Intensity Chopper Spectrometer at LANSCE” Los Alamos National Laboratory, March 23 (1998). [View: PPT | PDF]
     
  48. “Field induced incommensurate spin correlations in a spin 1/2 antiferromagnetic chain”, University of British Columbia, March 13, (1997).
     
  49. “Fluctuating Magnetism in Quantum Spin Chains” Los Alamos National Laboratory August (1996).
     
  50. “Magnetic Fluctuations in Low Dimensional Magnets” Los Alamos National Laboratory December (1995).
     
  51. “How Neutron Beams Probe Structural and Dynamical Properties of Solids” Society of Physics students, Johns Hopkins University, March 31 (1995).
     
  52. “From Radio-waves to Neutron Waves”, 3 times at Baltimore Polytechnic Institute January 10 (1995).
     
  53. “Spin Correlations Close to the Metal Insulator Transition in V2-yO3” University of Toronto February (1994).
     
  54. “Neutron Scattering from Kagomé Antiferromagnets”, Rutgers University, October (1993).
     
  55. “Dynamic Correlations in One Dimensional Antiferromagnets”, AT&T Bell Laboratories General Physics Colloquium, October (1992).
     
  56. “Spin Correlations in One Dimensional Antiferromagnets”, Towson State University, October (1992).
     
  57. “Dynamic Correlations in Quantum Antiferromagnetic Spin Chains”, The Ohio State University, May (1992).
     
  58. “Dynamic Correlations in Quantum Antiferromagnetic Spin Chains”, University of Chicago, May (1992).
     
  59. “Neutron Scattering Studies of Magnets with Strong Fluctuations”, National Institute of Standards and Technology, December (1991).
     
  60. “Superconductivity of UPt3 Studied by Neutron Diffraction and μ+SR”, Colloqium The Johns Hopkins University, January (1991).
     
  61. “Superconductivity of UPt3 Studied by Neutron Scattering and μ+SR”, March meeting of the American Physical Society, San Diego, CA (1991).
     
  62. “Superconductivity of UPt3 Studied by SANS and μ+SR”, The Johns Hopkins University, MD, February (1991).
     
  63. “Superconductivity of UPt3 Studied by Neutron Scattering Techniques”, AT&T Bell Laboratories, October (1990).
     
  64. “Superconductivity of UPt3 Studied by Neutron Scattering and μ+SR”, National Institute of Standards and Technology, April (1990).
     
  65. “Magnetic Fluctuations and Short-Range Order in Frustrated SrCr8-xGa4-xO19”, Rutgers University, NJ March (1990).
     
  66. “Magnetic Penetration Depth and Pairing State of UPt3”, American Physical Society, Anaheim, CA, March (1990).
     
  67. “Frustration in FCC Antiferromagnets Studied by Neutron Scattering”, American Physical Society, Anaheim, CA, March (1990).
     
  68. “Magnetic Fluctuations and short range order in a Kagomé Lattice”, 34th Annual Conference on Magnetism and Magnetic Materials, Boston, MA, November (1989).
     
  69. “Magnetic Fluctuations in Heavy Fermion Systems”, Escuela Superior de Fisica y Matematica, Mexico, D.F., Mexico Fall (1989).
     
  70. “Magnetic Fluctuations in Frustrated Antiferromagnets”, AT&T Bell Laboratories, Fall (1989).
     
  71. “Spin Correlations in FCC Antiferromagnets”, Risř National Laboratory, Denmark, Spring (1989).
     
  72. “Magnetic Fluctuations in Heavy Fermion Systems”, Risř National Laboratory, Denmark, Fall (1988).
     
  73. “Magnetism of Heavy Fermion Systems”, Copenhagen University, September (1988).
     
  74. “Magnetic Fluctuations in U2Zn17”, Meeting of the Danish Physical Society (1987).

Invited Talks at International Meetings

  1. "Magnetism and Ferroelectricity on a Kagome Staircase", Workshop on Motterials, Kavli Institute for Theoretical Physics, Santa Barbara, CA, September 5 (2007).

  2. "Spin Resonance in the d-wave Superconductor CeCoIn5", International Conference on Crystal Growth, Salt Lake City, UT, August 31 (2007).

  3. "Neutron Scattering from Frustrated Magnets", Workshop on Frustrated Magnetism, International Center for Theoretical Physics, Trieste Italy, August 10 (2007).

  4. "Scattering Neutrons from Magnons, Spinons, Solitons, and Breathers", Physics and Mathematics of Interacting Quantum Systems in Low Dimensions, Workshop in Honor of Prof. Minoru Takahashi, Media Hall, Kashiwa Library, University of Tokyo, April 25, 2007. [View: PPT]

  5. "Cold Neutron Spectroscopy on MACS", Invited talk at US-Japan Workshop on Neutron Scattering Instrumentation, SNS, March 1 (2007).  [View: PPT]

  6. "Ferro-electricity in Frustrated Magnets", Invited talk at the International Materials Research Conference, Cancun Mexico, August 22, (2006).

  7. Science and Technology with Neutrons", Tutorial at the International Materials Research Conference, Cancun Mexico, August 20, (2006). [View: PPT | PDF]

  8. "Ferro-electricity in Frustrated Magnets", Annual meeting of the Center for Nanophase Materials Science, Oak Ridge, Tennessee, June 14 (2006).

  9. "Spinons Solitons and Breathers in Quasi-one-dimensional Magnets, Invited talk at the March meeting of the American Physical Society, Baltimore, MD March 16 (2006)." [View: PPT | PDF]

  10. "Spin Correlations in Magnets Close to Quantum Criticality", International Conference on Spin- and charge-correlations in molecule-based materials
    Physical properties, Chemistry and material aspects, Konigstein, Germany, October 19 (2005). [View: PPT | PDF]

  11. "Science and Technology with Neutrons", Tutorial at the International Materials Research Conference, Cancun Mexico, August 21, (2005). [View: PPT | PDF]

  12. "Quasi Particle Breakdown in a Two-Dimensional Spin Liquid", Workshop on Theoretical and Experimental Magnetism, Coseners House, Abingdon, UK August 3, (2005).

  13. "Frustrated Magnetism in 2D", Workshop on Strongly Correlated Electron Systems, University of Kentucky, April 24-26, (2005). [View: PPT | PDF]

  14. "Glassy Phases in Two Dimensional Quantum Magnets" and "Phase diagram for a 2D spin-1/2 system with a singlet ground state" [View: PPT | PDF], Workshop on Quantum Critical Phenomena, Kavli Institute for Theoretical Physics, March 29 and April 1, (2005).

  15. "From Spin to Quantum Order in Coordination Polymer Magnets", Annual Meeting of the German Physical Society, Berlin, Germany, March 7, (2005). [View: PPT | PDF]

  16. "Frustrated Magnetism in two dimensions", Princeton Center for Complex Materials, workshop on strongly correlated electron systems, January 28 (2005). [View: PPT | PDF]

  17. "Quantum Magnetism with Time of Flight Neutron Scattering", Annual meeting of the Canadian Institute for Neutron Scattering, Nova Scotia, Canada September 24-25, (2004). [View: PPT | PDF]

  18. "Level Splitting in Frustrated non-Kramers Doublet Systems", International Workshop on Frustrated Magnetism, Montauk Yacht Club, Long Island, NY September 13-17 (2004). [View: PPT | PDF]

  19. "Frustrated Magnetism and Heavy Fermions", at conference on Strongly Correlated Electron Systems, Karlsruhe, Germany, July 29 (2004). [View: PPT | PDF]

  20. "Spin-1/2 Chains in Uniform and Staggered Fields", at conference on "Transport and Magnetism from the thermodynamic to the Nano-Scale" honoring Amnon Aharony on his 60th birhday, Eilat, Israel January 2-6 (2004). [View: PPT | PDF]

  21. "Structure and Dynamics of Spin Polarons Induced by Doping a Spin-1 Chain", The 3rd International Workshop on Novel Quantum Phenomena in Transition Metal Oxides and The 1st Asia-Pacific Workshop on Strongly Correlated Electron Systems, Sendai, Japan, November 8, (2003). [View: PPT | PDF]

  22. "Satisfied Simplexes in Frustrated Magnets", International Conference on Pulsed Neutron Scattering, Tsukuba, Japan October 27 (2003). [View: PPT | PDF]

  23. "Frustration and Field-driven Quantum Criticality", Workshop on Quantum Critical Phenomena and High Temperature Superconductivity", Institute of Theoretical Physics (ITP) & Interdisciplinary Center of Theoretical Studies (ICTS) Beijing, China October 25 (2003). [View: PPT | PDF]

  24. "Quantum Critical Spin-1/2 Chains", Workshop on Quantum Critical Phenomena and High Temperature Superconductivity", Institute of Theoretical Physics (ITP) &
    Interdisciplinary Center of Theoretical Studies (ICTS)
    Beijing, China October 24 (2003). [View: PPT | PDF]

  25. "Quantum Coherence in Magnets", 24th Risř International Symposium on Materials Science, Roskilde, Denmark, September 10 (2003).  [View: PPT | PDF]

  26. "The Frustrated Magnetism of ZnCr2O4", International Highly Frustrated Magnetism, ILL, Grenoble, France August 26 (2003).  [View: PPT | PDF]

  27. "Composite Spin in Fluctuating Magnets", International Workshop on Theory Modeling and Neutron Scattering, NIST, August 12 (2003).  [View: PPT | PDF]

  28. "Spin 1/2 Chains in Uniform and Staggered Fields", International Workshop on Strongly correlated transition metal compounds, Cologne, Germany, August 5 (2003).  [View: PPT | PDF]

  29. "Current and Future Neutron Scattering Instrumentation", at workshop on Neutrons In solid state Chemistry and the Earth Sciences Today and Tomorrow, Oak Ridge, Tennessee, March 13, (2003). [View: PPT | PDF]

  30. "Structure and Dynamics of Spin Polarons induced by Doping a Haldane Spin-1 Chain", Invited talk at March meeting of the American Physical Society, Austin, Texas, March 5, (2003). [View: PPT | PDF]

  31. "Spin Liquids in Frustrated Magnets - are they Stable in Real Materials?" Aspen Winter Conference on "Complex Quantum Order", February 9 (2003). [View: PPT | PDF]

  32. "Spin Peierls Effect in Frustrated Magnets", Workshop on Single Crystal Neutron Spectroscopy, Institute Laue Langevin, Grenoble, France, December 12 (2002). [View: PPT | PDF]

  33. "Doubly Focusing Monochromator for MACS", American Conference on Neutron Scattering, Knoxville, Tennessee, June 24 (2002). [View: PPT | PDF]

  34. "Frustrated Quantum Antiferromagnets", Physics of Frustration from Proteins to Pyrochlores, Santa Fe, NM June 19 (2002). [View: PPT | PDF]

  35. "Two and Three Dimensional Spin Systems with an Isolated Singlet Ground State", International conference on mSR, Williamsburg, VA June 4 (2002). [View: PPT | PDF]

  36. "Magnetized Quantum Spin Chains", Invited talk at European Condensed Matter Conference CMD-19. Bristol, UK April (2002).  

  37. “Spin Correlations in Magnetized Haldane Chains “, Invited talk at conference on “Physical Properties at High Magnetic Fields IV”, Santa Fe, New Mexico, October 24, (2001). [View: PPT | PDF]

  38. “Past and Future Insights from Neutron Scattering” Invited panel presentation at workshop on “Future of Materials Physics”, Los Alamos, NM August (2001). [View: PPT | PDF]

  39. “Quantum Magnets in High Magnetic Fields”, summer school on “Trends in High Magnetic Fields”, Cargese Corsica, May 7 (2001). [View: PPT | PDF]

  40. “Condensed Matter Physics with Neutrons”, March Meeting of the American Physical Society, Seattle, Washington March (2001). [View: PPT | PDF]

  41. “Finite Temperature Spin Correlations in Quantum Magnets with a Spin Gap” International Conference on Magnetism 2000, Recife, Brazil, August (2000). [View: PPT | PDF]

  42. “Solving Impurity Structures Using Inelastic Neutron Scattering” Annual meeting of the American Crystallographic Association St. Paul Minnesota, July 24 (2000). [View: PPT | PDF]

  43. “Magnetic Neutron Scattering”, talk at workshop on neutron scattering at Chalk River Nuclear Laboratories, Canada June 20 (2000). [View: PPT | PDF]

  44. “Neutron Scattering Studies of Frustrated Magnets”, Workshop on Highly Frustrated Magnetism 2000, Waterloo University, Canada, June 11 (2000). [View: PPT | PDF]

  45. “Impurities and Finite Temperature Effects in a one-Dimensional spin-1 Antiferromagnet”, Workshop on “Magnetic Excitations in Strongly Correlated Electron systems” CURREAC, Japan August 20 (1999). [View: PPT | PDF]

  46. “Neutron Scattering from Geometrically Frustrated Antiferromagnets” International Conference on Low temperature Physics, Helsinki, Finland August 7 (1999). [View: PPT | PDF]

  47. “Magnetism Close to the Metal Insulator Transition in V2O3” Workshop on Exotic Oxides, Brookhaven National Laboratory, March 18-20 (1999). [View: PPT | PDF]

  48. “High Field Neutron Scattering Experiments on Quantum Spin Systems” Workshop on Opportunities for Neutron Scattering at 30 T, Los Alamos National Laboratory, Los Alamos, NM January 14-15 (1999).  

  49. “Excitations in an Alternating Spin-1/2 Chain”, Conference on “The dynamics of single crystals measured by time-of-flight neutron scattering techniques” held at the Coseners house of the ISIS facility, Abingdon, UK December 4 (1998).

  50. “Temperature and Doping E ects on Dynamics of Gapped Spin Chains” Gordon Research Conference on Correlated Electron Systems Plymouth, NH July 19-24 (1998).

  51. “High Sensitivity Spectroscopy at Reactor Neutron Sources” Workshop on Inelastic Scattering Probes of Condensed Matter University of Chicago May 13-15 (1998).

  52. “The Metal Insulator Transition in V2O3”, Workshop on Probing Frontiers in Matter with Neutron Scattering held at Los Alamos National Laboratory December 12-14 (1997).

  53. “Neutron Scattering Studies of Metallic and Insulating Phases of V2O3” International Conference on Neutron Scattering, Toronto August (1997).

  54. “Triple Axis Neutron Spectrometry” Workshop on High Resolution Cold Neutron Neutron Spectroscopy, National Institute of Standards and Technology, August 13 (1997).

  55. “Neutron Scattering Studies of Non-Metallic Low-dimensional Quantum Antiferromagnets”, NATO-ASI School on dynamical properties of unconventional magnetic systems, Geilo, Norway April (1997).

  56. “Magnetic Field Effects in One Dimensional S=1/2 Systems”, March Meeting of the American Physical Society, Kansas City, March 18 (1997).

  57. “Scattering Studies of Low Dimensional Magnets” Miniworkshop on “Disorder and Interactions in Quantum Systems and their Classical Analogs”, International Center for Theoretical Physics Trieste, Italy July 8 (1996).

  58. “Strong Magnetic Fluctuations in Transition Metal Oxides” Symposium on Neutron Scattering in honor of the (1994) Physics Nobel Laurates, MMM95 Philadelphia November (1995).

  59. “Neutron Scattering Studies of Magnetism and Superconductivity in UPt3”, The International Conference on Strongly Correlated Electron Systems, Amsterdam August (1994).

  60. “Spin Correlations Close to the Metal Insulator Transitions in V2-yO3”, March Meeting of the American Physical Society Pittsburgh, PA March (1994).

  61. “Incommensurate Spin Correlations Close to the Metal Insulator Transitions in V2-yO3”, Conference on Strongly Correlated Electron Systems, San Diego, CA, August (1993).

  62. “Incommensurate Spin Correlations Close to the Metal Insulator Transitions in V2-yO3”, ICTP, Trieste, Italy, June (1993).

  63. “Incommensurate Spin Correlations Close to the Metal Insulator Transition in V2-yO3”, National Institute of Standards and Technology Internal Review, May (1993).

  64. “Dynamic Correlations in S=1 and S=1/2 Antiferromagnets”, Institute for Theoretical Physics. University of California Santa Barbara, June (1992).

  65. “Vortex Lattice and Antiferromagnetism of Superconducting UPt3”, 1992 Aspen Winter Conference, January (1992).

  66. “Neutron Scattering in a Quasi-2D Kagomé Magnet”, The 1991 March Meeting of the American Physical Society, Cincinnati, OH, March (1991).

  67. “A Strongly Fluctuating Quasi-Two-Dimensional Insulator”, 35th Annual Conference on Magnetism and Magnetic Materials, San Diego, CA, October (1990).

  68. “Neutron Scattering From Heavy Fermion Systems”, Workshop on Magnetic Excitations and Fluctuations II, Turin, Italy, May (1987).

Contributed Talks at International Meetings

  1. “Spin Fluctuations and Superconductivity in CeCoIn5”, International Conference on Strongly Correlated Electron Systems 2007, Houston, Texas May 17, (2007).

 

Site Designed by Marvin Chang