M. Koza

Publications (4)0 Total impact

• Source

  Available from: Zhiwei Hu

  Article: Crystal-field and Kondo scale investigation of CeMIn5 (M=Co, Ir and Rh): a combined x-ray absorption and inelastic neutron study

  T. Willers, Z Hu, N. Hollmann, P. O. Korner, J. Gegner, T. Burnus, H Fujiwara, A Tanaka, D. Schmitz, H. H. Hsieh, H J Lin, C T Chen, E. D. Bauer, J. L. Sarrao, E. Goremychkin, M. Koza, L. H. Tjeng, A Severing
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  ABSTRACT: Linear polarized soft-x ray absorption (XAS) and inelastic neutron scattering (INS) experiments have been performed on CeMIn5 with M = Rh, Ir, and Co to determine the crystal-field scheme and characteristic Kondo temperatures T* for the hybridization between 4f and conduction electrons. The ground state wave functions are determined from the polarization dependent soft-XAS data at the cerium M4,5 edge and the crystal-field splittings from INS. The characteristic temperature T* has been determined from the line widths of the neutron scattering data. We find that the quasielastic line widths of the superconducting compounds CeCoIn5 and CeIrIn5 are comparable with the low energy crystal-field splitting.
  03/2010;
• Article: Crystal-field and Kondo-scale investigations of CeMIn5 (M = Co, Ir, and Rh): A combined x-ray absorption and inelastic neutron scattering study

  T. Willers, Z Hu, N. Hollmann, P.O. Körner, J. Gegner, T. Burnus, H Fujiwara, A Tanaka, D. Schmitz, H. H. Hsieh, H J Lin, C T Chen, E. D. Bauer, J. L. Sarrao, E. Goremychkin, M. Koza, L. H. Tjeng, A Severing
  Physical Review B, v.81, 195114-1-195114-10 (2010).
• Source

  Available from: Zhiwei Hu

  Article: Crystal field and Kondo scale investigations of CeMIn5 M Co, Ir, and Rh A combined x ray absorption and inelastic neutron scattering study

  T. Willers, Z Hu, N. Hollmann, PO Korner, J. Gegner, T. Burnus, H Fujiwara, A Tanaka, D. Schmitz, HH Hsieh, HJ Lin, CT Chen, ED Bauer, JL Sarrao, E. Goremychkin, M. Koza, LH Tjeng, A Severing
• Article: Crystal-field and Kondo-scale investigations of CeMIn_ {5}(M= Co, Ir, and Rh): A combined x-ray absorption and inelastic neutron scattering study

  T. Willers, Z. Hu, N. Hollmann, P. O. Körner, J. Gegner, T. Burnus, H. Fujiwara, A. Tanaka, D. Schmitz, H. H. Hsieh, H.-J. Lin, C. T. Chen, E. D. Bauer, J. L. Sarrao, E. Goremychkin, M. Koza, L. H. Tjeng, A. Severing
  [show abstract] [hide abstract]
  ABSTRACT: Linear-polarized soft-x-ray absorption (XAS) and inelastic neutron scattering (INS) experiments have been performed on CeMIn5 with M=Rh, Ir, and Co to determine the crystal-field scheme and characteristic Kondo temperatures T∗ for the hybridization between 4f and conduction electrons. The ground-state wave functions are determined from the polarization-dependent soft-XAS data at the cerium M4,5 edge and the crystal-field splittings from INS. The characteristic temperature T∗ has been determined from the line widths of the neutron scattering data. We find that the quasielastic linewidths of the superconducting compounds CeCoIn5 and CeIrIn5 are comparable with the low-energy crystal-field splitting.
  Phys. Rev. B. 81(19).