Ground-state magnetization of polymerized spin chains

被引：40

作者：

Cabra, DC

Grynberg, MD

机构：

[1] Natl Univ La Plata, Dept Fis, RA-1900 La Plata, Argentina

[2] Univ Nacl Lomas de Zamora, Fac Ingn, RA-1832 Lomas De Zamora, Argentina

来源：

PHYSICAL REVIEW B | 1999年 / 59卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.59.119

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We investigate the ground-state magnetization plateaus appearing in spin-1/2 polymerized Heisenberg chains under external magnetic fields. The associated fractional quantization scenario and the exponents which characterize the opening of gapful excitations are analyzed by means of Abelian bosonization methods. Our conclusions are fully supported by the extrapolated results obtained from Lanczos diagonalizations of finite systems. [S0163-1829(99)0340 1-3].

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页码：119 / 122

页数：4

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