SPIN AND CHARGE DYNAMICS IN A ONE-DIMENSIONAL 2-BAND HUBBARD-MODEL

被引：5
|
作者：
DING, HQ
GODDARD, WA
机构：
[1] Materials Simulation Center, Beckman Institute, California Institute of Technology, Pasadena
来源：
PHYSICAL REVIEW B | 1993年 / 47卷 / 02期
关键词：
D O I：
10.1103/PhysRevB.47.1149
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A CuO chain with one or two holes doped is studied via the two-band Hubbard model in the large-U limit on a finite cluster. The quasiparticle band is E(k) is similar to 0.87J cos(2ka) with the bottom at ka = pi/2. The quasiparticles are kinks which have the character of three-spin polarons. The copper spin excitations are incommensurate spin waves. The two doped holes repel each other very slightly, in contrast to the slight attraction in the t-J model. Spin-charge separation also occurs.
引用
收藏
页码：1149 / 1152
页数：4
相关论文
共 50 条
  • [1] CHARGE CURRENTS OF SPIN EXCITATIONS IN ONE-DIMENSIONAL HUBBARD-MODEL
    BRAZOVSKII, S
    MATVEENKO, F
    NOZIERES, P
    JETP LETTERS, 1993, 58 (10) : 796 - 802
  • [2] CHARGE EXCITATIONS IN THE ONE-DIMENSIONAL HUBBARD-MODEL
    KAWAKAMI, N
    OKIJI, A
    PHYSICAL REVIEW B, 1989, 40 (10): : 7066 - 7072
  • [3] SPIN EXCITATIONS CARRY CHARGE CURRENTS - ONE-DIMENSIONAL HUBBARD-MODEL
    BRAZOVSKII, S
    MATVEENKO, S
    NOZIERES, P
    JOURNAL DE PHYSIQUE I, 1994, 4 (04): : 571 - 578
  • [4] CHARGE SUSCEPTIBILITY OF THE ONE-DIMENSIONAL HUBBARD-MODEL
    USUKI, T
    KAWAKAMI, N
    OKIJI, A
    PHYSICS LETTERS A, 1989, 135 (8-9) : 476 - 480
  • [5] SPIN CORRELATIONS IN THE ONE-DIMENSIONAL HUBBARD-MODEL
    QUE, WM
    BOWEN, SP
    WILLIAMS, CD
    JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1987, 20 (30): : L835 - L841
  • [6] SUPERCONDUCTIVITY IN THE 2-BAND HUBBARD-MODEL
    JAIN, KP
    RAMAKUMAR, R
    CHANCEY, CC
    BULLETIN OF MATERIALS SCIENCE, 1991, 14 (04) : 1061 - 1064
  • [7] Spin and charge dynamics of the one-dimensional extended Hubbard model
    Benthien, H.
    Jeckelmann, E.
    PHYSICAL REVIEW B, 2007, 75 (20)
  • [8] SUPERCONDUCTIVITY IN A 2-BAND HUBBARD-MODEL
    AOKI, H
    KUROKI, K
    PHYSICAL REVIEW B, 1990, 42 (04): : 2125 - 2136
  • [9] LARGE CHARGE FLUCTUATION IN THE ONE-DIMENSIONAL HUBBARD-MODEL
    KAWAKAMI, N
    OKIJI, A
    PHYSICA B, 1990, 163 (1-3): : 169 - 171
  • [10] BOSONIZATION OF THE 2-BAND HUBBARD-MODEL IN ONE-DIMENSION
    BROWNE, DA
    DONIACH, S
    BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1981, 26 (03): : 385 - 385
12345