Frustration and intermediate dimerized phase in spin ladder system

doi:10.1088/1674-1056/19/7/077503

中国物理B ›› 2010, Vol. 19 ›› Issue (7): 77503-077503.doi: 10.1088/1674-1056/19/7/077503

Frustration and intermediate dimerized phase in spin ladder system

刘光华¹, 石洞², 文瑞², 田光善²

(1)Department of Physics, Tianjin Polytechnic University, Tianjin 300160, China; (2)School of Physics, Peking University, Beijing 100871, China

收稿日期:2010-03-17 出版日期:2010-07-15 发布日期:2010-07-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 10874003) and Ministry of Science and Technology of China (Grant No. 2006CB921300).

Frustration and intermediate dimerized phase in spin ladder system

Shi Dong(石洞)^a)†ger, Wen Rui(文瑞)^a), Liu Guang-Hua(刘光华)^b), and Tian Guang-Shan(田光善)^a)

^a School of Physics, Peking University, Beijing 100871, China; ^b Department of Physics, Tianjin Polytechnic University, Tianjin 300160, China

Received:2010-03-17 Online:2010-07-15 Published:2010-07-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 10874003) and Ministry of Science and Technology of China (Grant No. 2006CB921300).

摘要/Abstract

摘要： This paper studies a spin ladder model which possesses frustrating interactions. By using both the bosonization and the density matrix renormalization group techniques, it shows that the intermediate columnar dimerized phase, which exists in a narrow parameter region of the so-called J₁-J₂ model, vanishes if the interchain frustration is weak and anisotropic. Therefore, it concludes that the frustrating interaction indeed plays an important role in producing such a phase. As a complementary to our previous investigation, it reaches a more complete picture of the quantum phase transition in the frustrated spin ladder systems.

Abstract: This paper studies a spin ladder model which possesses frustrating interactions. By using both the bosonization and the density matrix renormalization group techniques, it shows that the intermediate columnar dimerized phase, which exists in a narrow parameter region of the so-called J₁-J₂ model, vanishes if the interchain frustration is weak and anisotropic. Therefore, it concludes that the frustrating interaction indeed plays an important role in producing such a phase. As a complementary to our previous investigation, it reaches a more complete picture of the quantum phase transition in the frustrated spin ladder systems.

Key words: spin ladder, dimerized phases, frustration

中图分类号: (Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))

75.30.Kz

75.10.-b (General theory and models of magnetic ordering) 75.40.Mg (Numerical simulation studies)

石洞, 文瑞, 刘光华, 田光善. Frustration and intermediate dimerized phase in spin ladder system[J]. 中国物理B, 2010, 19(7): 77503-077503.

Shi Dong(石洞), Wen Rui(文瑞), Liu Guang-Hua(刘光华), and Tian Guang-Shan(田光善). Frustration and intermediate dimerized phase in spin ladder system[J]. Chin. Phys. B, 2010, 19(7): 77503-077503.

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Frustration and intermediate dimerized phase in spin ladder system

Frustration and intermediate dimerized phase in spin ladder system

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