A111 Physics
Iowa State University
Ames, Iowa 50011


Phone: (515) 294-3585
Fax: (515) 294-0689
Email: goldman@ameslab.gov

B. S. 1979; M. S. 1980; Ph.D. 1984, State University of New York at Stony Brook; Associate Scientist, Brookhaven National Laboratory 1984-1988; Assistant Professor/Associate Physicist, Iowa State University/Ames Laboratory, 1988-1990; Physicist, Iowa State University/Ames Laboratory, 1994-present; Chair, Department of Physic & Astronomy, 1999-present.

RESEARCH INTERESTS

X-ray and neutron scattering techniques to study the structure and dynamics of condensed matter. Research interests include magnetic x-ray scattering measurements of magnetic phase transitions, the structure and disorder in Icosahedral phase alloys, and the interplay between magnetism and superconductivity in superconductors.

SELECTED PUBLICATIONS

S. Hilsenbeck, R. E. McCarley, A. I. Goldman and G. L. Schrader, "Hydrodesulfurization activity and EXAFS characterization of novel ternary tin and lanthanum molybdenum sulfide catalysts,” Chem. Mater. 10, 125 (1998).

F. Shi, D. W. Delaney, A. I. Goldman, C. J. Jenks, M. J. Kramer, T. Lograsso, P. A. Thiel and M. A. Van Hove, "The surface structure of a  -Al(Cu1-xFex) - (110) film formed on an Al-Cu-Fe quasicrystal substrate analyzed by dynamical LEED,” Surface Science 411, 86 (1998).

M. Gierner, M. A. Van Hove, A. I. Goldman, Z. Shen, S.-L. Chang, P. J. Pinhero, C. J. Jenks, J. W. Anderegg, C. -M. Zhang and P. A. Thiel, "Fivefold surface of quasicrystalline AlPdMn: Structure determination using LEED,” Phys. Rev. B 57, 7628 (1998).

I. R. Fisher, Z. Islam, A. F. Panchula, K. O. Cheon, M. J. Kramer, P. C. Canfield and A. I. Goldman, "Growth of large-grain R-Mg-Zn quasicrystals from the terhary melt,” Phil Mag B 77, 1601 (1998).

Z. Islam, I. R. Fisher, J. Zarestky, P. C. Canfield, C. Stassis and A. I. Goldman, “Reinvestigation of long-range magnetic ordering in Icosahetral Tb-Mg-Zn,” Phys. Rev. B 57, R11047 (1998). (Rapid Communications)

M. Bullock, C. Stassis, J. Zarestky, A. Goldman, P. Canfield, G. Shirane, S. Shapiro, "Inelastic neutron studies of the low-energy phonon excitations in the RNi2B2C superconductors,” Physics B 241-243, 798 (1998).

M Bullock, J. Zarestky, C. Stassis, A. Goldman, P. Canfield, Z. Honda, G. Shirane, and S. M. Shapiro, "Low -energy phonon excitations in superconducting RNi2B2C,” Phys. Rev. B 57, 7916 (1998).

Z Islam, C. Detlefs, A. I. Goldman, S. K. Bud'ko, P. C. Canfield, J. P. Hill, D. Gibbs, T. Vogt and A. Zheludev, "Neutron diffraction and x-ray resonant exchange scattering studies of the zero-field magnetic structures of TbNi2Ge2,” Phys. Rev. B 58, 8522 (1998).

M. Islam, C. Detlefs, A. I. Goldman, S. L. Bud'ko, P. C. Canfield and A. Zheludev, "The magnetic structures of DyNi2Ge2,” Solid State Commun. 108, 371 (1998).

Z. Shen, M. J. Kramer, C. J. Jenks, A. I. Goldman, T. Lograsso, D. Delaney, M. Heinzig, W. Raberg and P. A. Thiel, "Crystalline surface structures induced by ion sputtering of Al-rich Icosahedral quasicrystals," Phys. Rev. B 58, 9961 (1998).

P. Somasunderam, D. Kim, J. M. Honig, T. M. Pekarek, T. Gu and A. I. Goldman, "Magnetic, electrical and structural studies on the metal-insulator transition in CuIr2S4-xSex (O x 4)," J. Appl. Phys. 83, 7243 (1998).

T. Jach, Y. Zhang, R. Colella, M. de Boissieu, M. Boudard, A. I. Goldman, T. A. Lograsso, D. W. Delaney, and S. Kycia, “Dynamical diffraction and x-ray standing waves from atomic planes normal to a twofold symmetry axis of the quasicrystal AlPdMn,” Phys. Rev. Lett. 82, 2904 (1999).

J. Zarestky, C. Stassis, A. I. Goldman, P. C. Canfield, G. Shirane, and S. Shapiro, “Phonon profiles in superconducting YNi₂B₂C,” Phys. Rev. B 60, 11932 (1999).

  I. R. Fisher, M. J. Kramer, Z. Islam, A. R. Ross, A. Kracher, T. Wiener, M. J. Sailer, A. I. Goldman, and P. C. Canfield, "On the growth of decagonal Al-Ni-Co qualsicrystals from the ternary melt,” Phil. Mag. B 79, 425 (1999)..

I. R. Fisher, M. J. Kramer, T. A. Wiener, Z. Islam, A. R. Ross, T. A. Lograsso, A. Kracher, A. Goldman, and P. C. Canfield , “On the growth of icosahedral Al-Pd-Mn quasicrystals from the ternary melt,” Phil. Mag. B 79, 1673 (1999).

C. Stassis, J. Zarestky, A. I. Goldman, P. C. Canfield, G. Shirane, and S. Shapiro, “Anomalous phonons below T_c in superconducting RNi₂B₂C (R=Lu,Y),” Physica C 317-318, 127 (1999).

C. Song, Z. Islam, L. Lottermoser, A. I. Goldman, and P. C. Canfield, “Magnetostriction-induced tetragonal-to-orthorhombic phase transition in TbNi₂B₂C,” Phys. Rev. B 60, 6223 (1999).

L. Margulies, M. J. Kramer, R. W. McCallum, S. Kycia, D. R. Haeffner, J. C. Lang, and I. Goldman, “New high temperature furnace for structure refinement by powder diffraction in controlled atmospheres using synchrotron radiation,” Rev. Sci. Instrumen.70, 3554 (1999).

Z. Islam, C. Detlefs, C. Song, A. I. Goldman, V. Antropov, B. N. Harmon, S. L. Bud’ko, T. Wiener, P. C. Canfield, D. Wermeille, K. D. Finkelstein and J. P. Hill, “Effects of band filling on magnetic structures: The case of RNi₂Ge₂,” Phys. Rev. Lett.  83, 2817 (1999).

L. Margulies, M. J. Kramer, R. W. McCallum, S. Kycia, D. R. Haeffner, J. C. Lang, A. I. Goldman New high temperature furnace for structure refinement by powder diffraction in controlled atmospheres using synchrotron radiation, Rev. Sci. Instrum. 70, 3554 (1999).

T. Jach, Y. Zhang, R. Colella, M. de Boissieu, M. Boudard, A. I. Goldman, T. A. Lograsso, D. W. Delaney, S. Kycia Dynamical diffraction and X-ray standing waves from atomic planes normal to a twofold symmetry axis of the quasicrystal A1PdMn, Phys. Rev. Lett. 82, 2904 (1999).

Z. Islam, C. Detlefs, C. Song, A. I. Goldman, V. Antropov, B. N. Harmon, S. L. Bud’ko, T. Wiener, P. C. Canfield, D. Wermeille, K. D. Finkelstein, J. P. Hill Effects of band filling on magnetic structures: The case of RNi2Ge2, Phys. Rev. Lett. 83, 2817 (1999).

C. Song, Z. Islam, L. Lottermoser, A. I. Goldman, P. C. Canfield Magnetostriction-induced tetragonal-to-orthorhombic phase transition in TbNi2B2C, Phys. Rev. B 60, 6223 (1999).

C. Detlefs, A. H. M. Z. Islam, A. I. Goldman, C. Stassis, P. C. Canfield, J. P. Hill, D. Gibbs Determination of magnetic-moment directions using x-ray resonant exchange scattering, Phys. Rev. B (Condensed Matter) 55(2), R680 (1997).



Z. Shen, C. J. Jenks, J. Anderegg, D. W. Delaney, T. A. Lograsso, P. A. Thiel, A. I. Goldman Structure and stability of the twofold surface of icosahedral Al-Pd-Mn by low-energy electron diffraction and x-ray photoemission spectroscopy, Phys. Rev. Lett. , 78(6) , 1050 (1997).



J. P. Hill, C. Detlefs, B. Sternlieb, A. I. Goldman, D. Gibbs, C. Stassis, P. Canfield, B. K. Cho Incommensurate antiferromagnetism in the intermetallic superconductor HoNi₂B₂C, Phys. Rev. B 53, 3487 (1996).



P. Dervengas, J. Zarestky, C. Stassis, A. I. Goldman, P. Canfield, B. K. Cho Magnetic structure of TbNi₂B₂C, Phys. Rev. B , (1996).



J. C. Lang, G. Srajer, C. Detlefs, A. I. Goldman, H. König, Xindong Wang, et al. Confirmation of quadrupolar transitions in circular magnetic x-ray dichro ism at the dysprosium L₃ edge, Phys. Rev. Lett. 74, 4935 (1995).



M. de Boissieu, M. Boudard, B. Hennion, R. Bellissent, S. Kycia, A. I. Goldman, et al. Diffuse scattering and phason elasticity in the AlPdMn icosahedral phase, Phys. Rev. Lett. 75, 89 (1995).



J. Zarestky, C. Stassis, A. I. Goldman, P. C. Canfield, P. Dervenagas, B. K. Cho, et al. Magnetic structure of ErNi₂B₂C, Phys. Rev. B 51, 678 (1995).