Ground State of S=1 Heisenberg Ladders

Search this Article

Author(s)

Abstract

The ground state of S = 1 antiferromagnetic Heisenberg (AFH) two-leg ladder has been shown to be gapful, in a whole range from the weak rung coupling limit to the strong rung coupling limit. The well-known valence-bond solid (VBS) picture for single AFH chains does not hold for this disordered ground state. We generalize the VBS picture to the plaquette-singlet solid (PSS) one to obtain a good description of the S = 1 ladder. The validity of the PSS picture for this system is also supported by the finiteness of a newly-introduced hidden order parameter analogous to the string order parameter. We observe that there is also no critical point in the ground state of ladders with in-phase leg-bond alternation.

Journal

  • Progress of Theoretical Physics

    Progress of Theoretical Physics (145), 221-224, 2002-06-28

    Progress of Theoretical Physics

References:  10

  • <no title>

    HALDANE F. D. M.

    Phys. Lett. A 93, 464, 1983

    Cited by (19)

  • <no title>

    HALDANE F. D. M.

    Phys. Rev. Lett. 50, 1153, 1983

    Cited by (92)

  • <no title>

    AFFLECK I.

    Phys. Rev. Lett. 59, 799, 1987

    Cited by (47)

  • <no title>

    TODO S.

    Phys. Rev. B 64, 224412, 2001

    Cited by (2)

  • <no title>

    DEN NIJS M.

    Phys. Rev. B 40, 4709, 1989

    Cited by (26)

  • <no title>

    TASAKI H.

    Phys. Rev. Lett. 66, 798, 1991

    Cited by (10)

  • <no title>

    EVERTZ H. G.

    Cond-mat 9707221

    Cited by (6)

  • <no title>

    BEARD B. B.

    Phys. Rev. Lett. 77, 5130, 1996

    Cited by (20)

  • <no title>

    TODO S.

    Phys. Rev. Lett. 87, 047203, 2001

    Cited by (7)

  • <no title>

    KOHNO M.

    Phys. Rev. B 57, 1046, 1998

    Cited by (4)

Codes

  • NII Article ID (NAID)
    110001209251
  • NII NACSIS-CAT ID (NCID)
    AA00791466
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    03759687
  • NDL Article ID
    6206287
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z53-A468
  • Data Source
    CJP  NDL  NII-ELS  NDL-Digital 
Page Top