Kondo Effect in Systems with Two-Electron Occupancy

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Author(s)

Abstract

The Kondo problem of systems with two-electron occupancy in a realistic crystalline electric field (CEF) is investigated using the numerical renormalization group method. We examine the ground state of an impurity Anderson model, which has a singlet as the lowest state and multiplets as excited states of an f^2 configuration subject to a cubic CEF. When the hybridization between the f electrons and the conduction electrons is small, the ground state is a CEF-like singlet state. For a large hybridization, on the other hand, the ground state becomes a Kondo-like singlet state. The hybridization with Γ_8 symmetry plays an important role in the Kondo effect in this model. The transition between the two types of singlet states is accompanied by a lowering of the energy scale when the Γ_8 type hybridization is relatively large. The non-Fermi liquid behavior of a model, which has a non-Kramers lowest state of an f^2 configuration subject to the tetragonal CEF, is also investigated.

Journal

  • Journal of the Physical Society of Japan

    Journal of the Physical Society of Japan 74(1), 27-33, 2005-01-15

    The Physical Society of Japan (JPS)

References:  27

  • <no title>

    KONDO J.

    Prog. Theor. Phys. 32, 37, 1964

    Cited by (30)

  • <no title>

    HEWSON A. C.

    The Kondo Problem to Heavy Fermions, 1993

    Cited by (33)

  • <no title>

    WILSON K. G.

    Rev. Mod. Phys. 47, 773, 1975

    Cited by (37)

  • <no title>

    KRISHNA-MURTHY H. R.

    Phys. Rev. B 21, 1003, 1980

    Cited by (16)

  • <no title>

    YOSIDA K.

    Prog. Theor. Phys. 53, 1286, 1975

    Cited by (12)

  • <no title>

    YAMADA K.

    Prog. Theor. Phys. 54, 316, 1975

    Cited by (12)

  • <no title>

    ANDREI N.

    Phys. Rev. Lett. 45, 379, 1980

    Cited by (4)

  • <no title>

    WIEGMANN P. B.

    JETP Lett. 31, 392, 1980

    Cited by (3)

  • <no title>

    OKIJI A.

    Phys. Rev. Lett. 50, 1157, 1983

    Cited by (5)

  • <no title>

    TAKEGAHARA K.

    J. Phys. Soc. Jpn. 70, 1190, 2001

    Cited by (16)

  • <no title>

    KOHGI M.

    J. Phys. Soc. Jpn. 72, 1002, 2003

    Cited by (13)

  • <no title>

    NOZIERES P.

    J. Phys. (Paris) 41, 193, 1980

    Cited by (15)

  • <no title>

    COX D. L.

    Adv. Phys. 47, 599, 1998

    Cited by (11)

  • <no title>

    KOGA M.

    J. Phys. Soc. Jpn. 64, 4345, 1995

    Cited by (14)

  • <no title>

    SAKAI O.

    Solid State Commun. 101, 791, 1997

    Cited by (4)

  • <no title>

    SHIMIZU Y.

    J. Phys. Soc. Jpn. 67, 2395, 1998

    Cited by (4)

  • <no title>

    SHIMIZU Y.

    J. Phys. Soc. Jpn. 68, 2994, 1999

    Cited by (2)

  • <no title>

    BUTLER P. H.

    Point Group Symmetry Applications, Methods and Tables, 1981

    Cited by (1)

  • <no title>

    JONES B. A.

    Phys.Rev.Lett. 61, 125, 1988

    Cited by (10)

  • <no title>

    SAKAI O.

    J. Phys. Soc. Jpn. 61, 2333, 1992

    Cited by (9)

  • <no title>

    SAKAI O.

    J. Phys. Soc. Jpn. 61, 2348, 1992

    Cited by (3)

  • <no title>

    AFFLECK I.

    Phys. Rev. B 48, 7297, 1993

    Cited by (6)

  • <no title>

    SUZUKI S.

    Solid State Commun. 104, 429, 1997

    Cited by (4)

  • <no title>

    BAUER E. D.

    Phys. Rev. B 65, 100506, 2002

    Cited by (66)

  • <no title>

    COX D. L.

    Physica B 186-188, 312, 1993

    DOI  Cited by (12)

  • <no title>

    SHIMIZU Y.

    Physica B 163, 401, 1990

    Cited by (1)

  • Non-Fermi Liquid Behavior of U-impurity with f^2-Singlet Ground State

    YOTSUHASHI Satoshi , MIYAKE Kazumasa , KUSUNOSE Hiroaki

    Journal of the Physical Society of Japan 71(2), 389-392, 2002-02-15

    DOI  References (32) Cited by (7)

Codes

  • NII Article ID (NAID)
    110001979335
  • NII NACSIS-CAT ID (NCID)
    AA00704814
  • Text Lang
    ENG
  • Article Type
    REV
  • ISSN
    00319015
  • NDL Article ID
    7217811
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z53-A404
  • Data Source
    CJP  NDL  NII-ELS 
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