Frustration and intermediate dimerized phase in spin ladder system |
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Authors: | Shi Dong Wen Rui Liu Guang-Hua Tian Guang-Shan |
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Affiliation: | School of Physics, Peking University, Beijing 100871, China; 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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Keywords: | spin ladder dimerized phases frustration |
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