ZERO-TEMPERATURE PHASE-DIAGRAM OF THE ONE-DIMENSIONAL T-J MODEL

被引：3
|
作者：
HELLBERG, CS [1 ]
MELE, EJ [1 ]
机构：
[1] UNIV PENN,DEPT PHYS,PHILADELPHIA,PA 19104
来源：
PHYSICA B | 1994年 / 199卷
关键词：
D O I：
10.1016/0921-4526(94)91823-6
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We study the t-J model in one dimension by combining a variational approach and an exact ground-state projection method. We find that the model exhibits Luttinger-liquid behavior for most of the phase diagram before the critical J/t for phase separation. However, at small densities and high interaction strengths, a new Luther-Emery-liquid phase with a gap to spin excitations and enhanced superconducting correlations is found.
引用
收藏
页码：322 / 324
页数：3
相关论文
共 50 条
  • [41] SPIN GAP IN A GENERALIZED ONE-DIMENSIONAL T-J MODEL
    OGATA, M
    LUCHINI, MU
    RICE, TM
    PHYSICAL REVIEW B, 1991, 44 (21): : 12083 - 12085
  • [42] One-dimensional t-J model from a variational viewpoint
    Yokoyama, H
    Ogata, M
    PHYSICAL REVIEW B, 1996, 53 (09) : 5758 - 5774
  • [43] Critical behaviour of the one-dimensional ferromagnetic t-J model
    Yang, F
    Wang, YP
    CHINESE PHYSICS LETTERS, 2002, 19 (01): : 108 - 110
  • [44] SPIN AND CHARGE DYNAMICS FOR THE ONE-DIMENSIONAL T-J MODEL
    DEISZ, J
    LUK, KH
    JARRELL, M
    COX, DL
    PHYSICAL REVIEW B, 1992, 46 (06): : 3410 - 3419
  • [45] CORRELATION-FUNCTIONS IN THE ONE-DIMENSIONAL T-J MODEL
    KAWAKAMI, N
    YANG, SK
    PHYSICAL REVIEW LETTERS, 1990, 65 (18) : 2309 - 2311
  • [46] New integrable generalization of the one-dimensional t-J model
    Alcaraz, FC
    Bariev, RZ
    JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1998, 31 (12): : L233 - L239
  • [47] BOSONIZATION WITH CONSTRAINTS - APPLICATION TO THE ONE-DIMENSIONAL T-J MODEL
    SCHMELTZER, D
    BISHOP, AR
    PHYSICAL REVIEW B, 1992, 45 (06): : 3168 - 3171
  • [48] Impact of criticality and phase separation on the spin dynamics of the one-dimensional t-J model
    Zhang, S
    Muller, G
    Stolze, J
    JOURNAL OF APPLIED PHYSICS, 1996, 79 (08) : 5227 - 5229
  • [49] Variational study of the spin-gap phase of the one-dimensional t-J model
    Chen, YC
    Lee, TK
    PHYSICAL REVIEW B, 1996, 54 (13): : 9062 - 9065
  • [50] A new phase diagram for the t-J model
    Ercolessi, E
    Pieri, P
    Roncaglia, M
    PHYSICS LETTERS A, 1997, 225 (4-6) : 331 - 340
12345