تقرير
Periodically driven three-dimensional Kitaev model
| العنوان: | Periodically driven three-dimensional Kitaev model |
|---|---|
| المؤلفون: | Sasidharan, Soumya, Surendran, Naveen |
| سنة النشر: | 2024 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Strongly Correlated Electrons |
| الوصف: | We study the dynamics of a three-dimensional generalization of Kitaev's honeycomb lattice spin model (defined on the hyperhoneycomb lattice) subjected to a harmonic driving of $J_z$, one of the three types of spin-couplings in the Hamiltonian. Using numerical solutions supported by analytical calculations based on a rotating wave approximation, we find that the system responds nonmonotonically to variations in the frequency $\omega$ (while keeping the driving amplitude $J$ fixed) and undergoes dynamical freezing, where at specific values of $\omega$, it gets almost completely locked in the initial state throughout the evolution. However, this freezing occurs only when a constant bias is present in the driving, i.e., when $J_z = J'+ J\cos{\omega t}$, with $J'\neq 0$. Consequently, the bias acts as a switch that triggers the freezing phenomenon. Dynamical freezing has been previously observed in other integrable systems, such as the one-dimensional transverse-field Ising model. Comment: 10 pages, 4 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2403.06123 |
| رقم الأكسشن: | edsarx.2403.06123 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |