Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8156119 | Journal of Magnetism and Magnetic Materials | 2015 | 7 Pages |
Abstract
The ground-state properties of the spin-1/2 Ferromagnetic-Ferromagnetic-Antiferromagnetic (F-F-AF) trimerized chain are investigated by the infinite time-evolving block decimation (iTEBD) method. A ground-state phase diagram including three different phases, i.e., a fully polarized phase, a 1/3 plateau phase, and a non-plateau phase, is obtained. All the quantum phase transitions (QPTs) can be described well by the model independent bipartite entanglement. QPTs between the non-plateau phase and the other two phases belong to the second-order category. Doubly degenerate entanglement spectrum and nontrivial string order are observed in the 1/3 plateau phase, which can be used to distinguish it from the other phases. By the scaling behavior of the bipartite entanglement, the central charge of the critical non-plateau phase is determined to be câ 1.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Guang-Hua Liu, Wei Li, Wen-Long You, Gang Su, Guang-Shan Tian,