| Autor: |
Rong-Yang Sun, Hui-Ke Jin, Hong-Hao Tu, Yi Zhou |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
npj Quantum Materials, Vol 9, Iss 1, Pp 1-7 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2397-4648 |
| DOI: |
10.1038/s41535-024-00627-5 |
| Popis: |
Abstract The nature of the ground state for the S = 1/2 Kagome Heisenberg antiferromagnet (KHAF) has been elusive. We revisit this challenging problem and provide numerical evidence that its ground state is a chiral spin liquid. Combining the density matrix renormalization group method with analytical analyses, we demonstrate that the previously observed chiral spin liquid phase in the KHAF with longer-range couplings is stable in a broader region of the phase diagram. We characterize the nature of the ground state by computing energy derivatives, revealing the ground-state degeneracy arising from the spontaneous breaking of the time-reversal symmetry, and targeting the semion sector. We further investigate the phase diagram in the vicinity of the KHAF and observe a $$\sqrt{3}\times \sqrt{3}$$ 3 × 3 magnetically ordered phase and two valence-bond crystal phases. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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