Quasiperiodic hubbard chains

被引：39

作者：

Hida, K ^{[1
]}

机构：

[1] Saitama Univ, Fac Sci, Dept Phys, Urawa, Saitama 3388570, Japan

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.86.1331

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Low-energy properties of half-filled Fibonacci Hubbard models are studied by weak-coupling renormalization group and density matrix renormalization group methods. In the case of diagonal modulation, weak Coulomb repulsion is irrelevant and the system behoves as a free Fibonacci chain, while for strong Coulomb repulsion the charge sector becomes a Mott insulator and the spin sector behaves as a uniform Heisenberg antiferromagnetic chain. The off-diagonal modulation always drives the charge sector to a Mott insulator and the spin sector to a Fibonacci antiferromagnetic Heisenberg chain.

引用

收藏

页码：1331 / 1334

页数：4

相关论文

共 25 条

[1] THEORY OF SPIN-ANISOTROPIC ELECTRON-ELECTRON INTERACTIONS IN QUASI-ONE-DIMENSIONAL METALS [J].

GIAMARCHI, T ;

SCHULZ, HJ .

JOURNAL DE PHYSIQUE, 1988, 49 (05) :819-835

[2] CORRELATION-FUNCTIONS OF ONE-DIMENSIONAL QUANTUM-SYSTEMS [J].

GIAMARCHI, T ;

SCHULZ, HJ .

PHYSICAL REVIEW B, 1989, 39 (07) :4620-4629

[3] Aperiodic and correlated disorder in XY chains:: exact results [J].

Hermisson, J .

JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 2000, 33 (01) :57-79

[4] Density matrix renormalization group study of the S=1/2 antiferromagnetic Heisenberg chains with quasiperiodic exchange modulation [J].

Hida, K .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1999, 68 (10) :3177-3180

[5] Density matrix renormalization group method for random quantum one-dimensional systems - Application to the random spin-1/2 antiferromagnetic Heisenberg chain [J].

Hida, K .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1996, 65 (04) :895-898

[6] ELECTRONIC SPECTRAL AND WAVE-FUNCTION PROPERTIES OF ONE-DIMENSIONAL QUASI-PERIODIC SYSTEMS - A SCALING APPROACH [J].

HIRAMOTO, H ;

KOHMOTO, M .

INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 1992, 6 (3-4) :281-320

[7] Quantum dots in aperiodic order [J].

Hornquist, M ;

Ouchterlony, T .

PHYSICA E, 1998, 3 (04) :213-223

[8] Comparative study of the critical behavior in one-dimensional random and aperiodic environments [J].

Igloi, F ;

Karevski, D ;

Rieger, H .

EUROPEAN PHYSICAL JOURNAL B, 1998, 5 (03) :613-625

[9] Exact renormalization-group study of aperiodic Ising quantum chains and directed walks [J].

Igloi, F ;

Turban, L ;

Karevski, D ;

Szalma, F .

PHYSICAL REVIEW B, 1997, 56 (17) :11031-11050

[10] CANTOR SPECTRUM FOR AN ALMOST PERIODIC SCHRODINGER-EQUATION AND A DYNAMICAL MAP [J].

KOHMOTO, M ;

OONO, Y .

PHYSICS LETTERS A, 1984, 102 (04) :145-148