BINDING OF HOLES IN 2-DIMENSIONAL LATTICES WITH DIFFERENT BOUNDARY-CONDITIONS

被引：15

作者：

RIERA, JA

机构：

[1] Instituto de Fisica de Rosario, 2000-Rosario

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.43.3681

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Using exact diagonalization we compute the binding energy of two holes for the t-J model in lattices with different boundary conditions. We find that with periodic, antiperiodic, mixed, and other boundary conditions there is always negative binding energy in a certain range of J, for all the sizes studied. This is different from the behavior obtained in the one-dimensional case, suggesting that binding might survive in the thermodynamic limit in two dimensions.

引用

收藏

页码：3681 / 3683

页数：3

相关论文

共 15 条

[1] THE RESONATING VALENCE BOND STATE IN LA2CUO4 AND SUPERCONDUCTIVITY [J].

ANDERSON, PW .

SCIENCE, 1987, 235 (4793) :1196-1198

[2] STABILITY OF THE SATURATED FERROMAGNETIC STATE IN THE ONE-BAND HUBBARD-MODEL [J].

BARBIERI, A ;

RIERA, JA ;

YOUNG, AP .

PHYSICAL REVIEW B, 1990, 41 (16) :11697-11700

[3] POSSIBLE HIGH-TC SUPERCONDUCTIVITY IN THE BA-LA-CU-O SYSTEM [J].

BEDNORZ, JG ;

MULLER, KA .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1986, 64 (02) :189-193

[4] EXACT-DIAGONALIZATION STUDY OF THE EFFECTIVE MODEL FOR HOLES IN THE PLANAR ANTIFERROMAGNET [J].

BONCA, J ;

PRELOVSEK, P ;

SEGA, I .

PHYSICAL REVIEW B, 1989, 39 (10) :7074-7080

[5] BINDING OF HOLES IN THE HUBBARD-MODEL [J].

DAGOTTO, E ;

MOREO, A ;

SUGAR, RL ;

TOUSSAINT, D .

PHYSICAL REVIEW B, 1990, 41 (01) :811-814

[6]

FYE RM, UNPUB

[7] HOLE DYNAMICS IN THE T-J MODEL - AN EXACT DIAGONALIZATION STUDY [J].

HASEGAWA, Y ;

POILBLANC, D .

PHYSICAL REVIEW B, 1989, 40 (13) :9035-9043

[8]

ITO T, UNPUB

[9] GROUND-STATE AND LOW-LYING EXCITATIONS OF THE PERIODIC ANDERSON HAMILTONIAN IN ONE DIMENSION FROM FINITE-CELL CALCULATIONS [J].

JULLIEN, R ;

MARTIN, RM .

PHYSICAL REVIEW B, 1982, 26 (11) :6173-6185

[10]

KAXIRAS E, 1988, PHYS REV B, V38, P566