Theory on Crystal-Field Excitation of Paramagnetic Pr-Ion Systems with Degenerate Ground Levels and Multipolar Exchange Interactions : Origin of Two Spectral Components with Large and Small Dispersions

Search this Article

Author(s)

Abstract

The spectral line shape of inelastic neutron excitation was theoretically studied for paramagnetic Pr ion systems with crystal-field splitting and intersite exchange interactions. It was assumed that the ground level is the doublet E (Γ_3) and the excited level is the triplet T1 (Γ_4) of the cubic point group. The excitation spectra are given by the superposition of two components: One has a relatively strong intensity and a sharp peak with a large dispersion; the other shows a weak and broad peak with a small dispersion. Similar features that have been observed recently in PrMg_3 were explained by the calculation. The former component is ascribed to the usual E→T1 excitation with the dispersion due to the dipole-type exchange interaction, and the latter to a transition accompanied by the simultaneous excitation of fluctuation modes in the manifold at the ground level. Multipolar-type exchange interactions increase the intensity of the latter. The theory was developed based on Mori's memory function formalism, and a symmetrized form of a standard operator was introduced to treat the multipolar interaction systematically.

Journal

  • Journal of the Physical Society of Japan

    Journal of the Physical Society of Japan 77(12), "124714-1"-"124714-10", 2008-12-15

    The Physical Society of Japan (JPS)

References:  28

  • <no title>

    SUZUKI H. S.

    Proc. 25th Int. Conf. Low Temperature Physics, August 2008, Amsterdam, J. Phys. : Conf. Ser.

    Cited by (1)

  • <no title>

    INUI T.

    Group Theory and Its Applications in Physics, 1996

    Cited by (1)

  • <no title>

    GROVER B.

    Phys. Rev. 140, A1944, 1965

    Cited by (1)

  • <no title>

    WANG Y.-L.

    Phys. Rev. 172, 539, 1968

    Cited by (1)

  • <no title>

    MORIN P.

    J. Phys. F 10, 1575, 1980

    Cited by (1)

  • <no title>

    BUYERS W. J. L.

    Handbook on the Physics and Chemistry of the Actinides 2, 239, 1985

    Cited by (1)

  • <no title>

    FULDE P.

    Adv. Phys. 34, 589, 1985

    Cited by (1)

  • <no title>

    PURWINS H.-G.

    Adv. Phys. 39, 309, 1990

    Cited by (1)

  • <no title>

    SHIINA R.

    J. Phys. Soc. Jpn. 73, 3453, 2004

    Cited by (1)

  • <no title>

    TAYAMA T.

    J. Phys. Soc. Jpn. 70, 248, 2001

    Cited by (1)

  • <no title>

    ONIMARU T.

    Phys. Rev. Lett. 94, 197201, 2005

    Cited by (1)

  • <no title>

    BUCHER E.

    Solid State Commun. 13, 215, 1973

    Cited by (1)

  • <no title>

    SAKAI O.

    J. Phys. Soc. Jpn. 72, 1534, 2003

    Cited by (1)

  • <no title>

    CHEUNG T. H.

    J. Phys. C 7, L192, 1974

    Cited by (1)

  • <no title>

    HUBER D. L.

    Phys. Rev. B 18, 429, 1978

    Cited by (1)

  • <no title>

    J. Phys. Soc. Jpn. 77(Suppl. A), 2008

    Cited by (1)

  • <no title>

    MORI H.

    Prog. Theor. Phys. 33, 423, 1965

    Cited by (1)

  • <no title>

    HALEY S.

    Phys. Rev. B 5, 1106, 1972

    Cited by (1)

  • <no title>

    BECKER K. W.

    Z. Phys. B 28, 9, 1977

    Cited by (1)

  • <no title>

    LOPES L. C.

    J. Magn. Magn. Mater. 47-48, 133, 1985

    Cited by (1)

  • <no title>

    KUWAHARA K.

    J. Phys. Soc. Jpn. 76, 093702, 2007

    Cited by (1)

  • <no title>

    SHIINA R.

    J. Phys. Soc. Jpn. 76, 094702, 2007

    Cited by (1)

  • <no title>

    KUSUNOSE H.

    J. Phys. Soc. Jpn. 77, 064710, 2008

    Cited by (1)

  • <no title>

    BUSCHOW K. H. J.

    J. Less-Common Met 44, 301, 1976

    Cited by (2)

  • <no title>

    ANDREEFF A.

    Phys. Status Solidi B 98, 283, 1980

    Cited by (2)

  • <no title>

    GALERA R. M.

    J. Magn. Magn. Mater. 23, 317, 1981

    Cited by (3)

  • <no title>

    FULDE P.

    Handbook on the Physics and Chemistry of Rare Earths 2, 295, 1979

    DOI  Cited by (2)

  • <no title>

    KELLEY T. M.

    Phys. Rev. B 61, 1831, 2000

    Cited by (4)

Codes

  • NII Article ID (NAID)
    110007021689
  • NII NACSIS-CAT ID (NCID)
    AA00704814
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    00319015
  • NDL Article ID
    9741146
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z53-A404
  • Data Source
    CJP  NDL  NII-ELS 
Page Top