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Ratnasingham Sooryakumar

  • Professor, Physics
  • 2040 Physics Research Building
    191 W Woodruff Ave
    Columbus, OH 43210
  • 614-292-3130



  • 1998. In Advances in Superconductivity X. Proceedings of the 10th International Symposium,


  • 1997. In Materials for Mechanical and Optical Microsystems Symposium,


  • 1990. In 20th International Conference on the Physics of Semiconductors,


  • 1987. In Extended Abstracts. High Temperature Superconductors. Proceedings of Symposium S, 1987 Spring Meeting of the Materials Research Society,


  • 1985. In Proceedings of the 17th International Conference on the Physics of Semiconductors,


  • 1979. In Light scattering in solids,

Journal Articles


  • Ham, K. -M.; Kim, J. -T.; Sooryakumar, R.; Lemberger, T. R., 1993, "Raman study of the anomalous behavior of the 340-cm-1 CuO2 planar-oxygen phonon in Ni-doped YBa2Cu3O7-δ superconducting films." Physical Review B (Condensed Matter) 47, no. 17,


  • Yi Liu; Ju Young Lee; Sumner, M. J.; Sooryakumar, R.; Lemberger, T. R., 1990, "Raman-scattering study of high-Tc films of the ordered defect structure YBa2Cu4O8-δ." Physical Review B (Condensed Matter) 42, no. 16,


  • Sooryakumar, R., 1988, "Hole subbands and optical emission in GaAs quantum wells." Comments on Condensed Matter Physics 14, no. 1,
  • Liu, Y.; Pangilinan, G.; Sooryakumar, R.; Sumner, M. J.; Lemberger, T. R., 1988, "Correlation of superconducting properties and oxygen concentration in Y1Ba2Cu3O7-δ films via Raman spectroscopy." Journal of Applied Physics 64, no. 7,


  • Sooryakumar, R., 1986, "Valence band mixing and optical emission in modulation-doped GaAs-(AlGa)As heterostructure." IEEE Journal of Quantum Electronics QE-22, no. 9,


  • Sooryakumar, R.; Klein, M. V., 1981, "The superconducting energy gap in 2H-NbSe2 and its coupling to charge density waves." Physica B & C 105B+C, no. 1-3,