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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 |
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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.
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Received: 17 March 2010
Accepted manuscript online:
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PACS:
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75.30.Kz
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(Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))
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75.10.-b
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(General theory and models of magnetic ordering)
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75.40.Mg
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(Numerical simulation studies)
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Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10874003) and Ministry of Science and Technology of China (Grant No. 2006CB921300). |
Cite this article:
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 2010 Chin. Phys. B 19 077503
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