Note on the thermodynamic Bethe ansatz approach to the quantum phase diagram of the strong coupling ladder compounds
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Batchelor, Murray T.; Guan, Xi-Wen; Foerster, Angela; Zhou, H-Q.
Description
We investigate the low-temperature phase diagram of the exactly solved su(4) two-leg spin ladder as a function of the rung coupling J⊥ and magnetic field H by means of the thermodynamic Bethe ansatz (TBA). In the absence of a magnetic field the model exhibits three quantum phases, while in the presence of a strong magnetic field there is no singlet ground state for ferromagnetic rung coupling. For antiferromagnetic rung coupling, there is a gapped phase in the regime H < Hc1, a fully...[Show more]
Collections | ANU Research Publications |
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Date published: | 2003-08-11 |
Type: | Journal article |
URI: | http://hdl.handle.net/10440/219 http://digitalcollections.anu.edu.au/handle/10440/219 |
Source: | New Journal of Physics |
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Batchelor_Note2003.pdf | 575.51 kB | Adobe PDF |
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