准周期拉曼晶格中的不同折返转变
Distinct reentrant transitions in a quasi-periodic Raman lattice
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中文总结 AI 辅助
研究具有自旋轨道耦合和塞曼势的一维晶格，通过调整SOC产生异常迁移率边缘，出现折返转变，确定新的折返临界转变，完善折返现象框架，揭示均匀塞曼势驱动的折返离域转变及独特途径。
中文摘要 AI 辅助
我们研究了一个具有自旋轨道耦合（SOC）和包含均匀与准周期分量的塞曼势的一维晶格。通过调整SOC，出现了异常迁移率边缘，将临界态与非临界态分开，在两个混合相M₁→M₂→M₁之间产生折返转变，其中M₁（M₂）缺乏（包含）异常迁移率边缘。确定了一种新的“折返临界转变”，它被定义为多次进入临界相。作为折返离域/局域化转变的对应物，它完善了跨越扩展、局域和临界态的折返现象的基本框架。均匀塞曼势驱动折返离域转变，这是由迁移率边缘移动引起的局域区域分裂导致的。这揭示了超越杂化机制的折返现象的独特途径。
英文摘要
We investigate a one-dimensional lattice with spin-orbit coupling (SOC) and a Zeeman potential containing uniform and quasiperiodic components. By tuning SOC, anomalous mobility edges emerge that separate critical from non-critical states, yielding a reentrant transition between two mixed phases, M$_1$$\to$M$_2$$\to$M$_1$, where M$_1$ (M$_2$) lacks (hosts) anomalous mobility edges. A new \emph{reentrant criticality transition}, defined as multiple entries into the critical phase, is identified. As a counterpart to reentrant delocalization/localization transitions, it completes the basic framework of reentrant phenomena across extended, localized, and critical states. The uniform Zeeman potential drives a reentrant delocalization transition, arising from the splitting of the localized region induced by the shift of mobility edges. This reveals a distinct pathway for reentrant phenomena beyond hybridization mechanisms.
