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Quantum phase transitions and thermodynamics of quantum antiferromagnets with competing interactions
We study the isotropic Heisenberg chain with nearest and next-nearest neighbor interactions. The ground state phase diagram is constructed in dependence on the additional interactions and an external magnetic field. The thermodynamics is studied by use of finite sets of nonlinear integral equations...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2007
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| Online Access: | http://dspace.nbuv.gov.ua/handle/123456789/7712 |
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