论文标题
对称混合的界限订单：$（d + ig）$的扩展退化 - $ \ mathrm {sr} _ {2} \ mathrm {ru} \ mathrm {o} _ {o} _ {4} $
Symmetry-mixed bound-state order: extended degeneracy of $(d + ig)$-superconductivity in $\mathrm{Sr}_{2}\mathrm{Ru}\mathrm{O}_{4}$
论文作者
论文摘要
我们报告了一个波动驱动的物质状态，该状态在两个对称性的主要阶段的意外变性点附近发展。由于对称性混合，该边界订单表现出独特的特征，与任一个家相不相容。在现场理论形式主义中，我们得出具有边界序列的系统的通用相图，研究其对应变的响应并评估特定模型的分析表达式。我们的结果支持$（D + Ig）$ - 超导状态作为$ \ Mathrm {srm {sr} _ {2} \ Mathrm {Ru} \ Mathrm {o} _ {O} _ {4} $的候选者：最明显的是，与最新的经验相吻合，是非常明显的依赖性的经验[and textit [and textit] et textit [nictit]。 grinenko \ textit {et al。} arxiv（2020）]。从超导性的关节发作和分时对称性对两个分裂相跃迁的突出发作的非变化应变以上的进化为这种情况提供了可测试的预测。
We report a fluctuation-driven state of matter that develops near an accidental degeneracy point of two symmetry-distinct primary phases. Due to symmetry mixing, this bound-state order exhibits unique signatures, incompatible with either parent phase. Within a field-theoretical formalism, we derive the generic phase diagram for system with bound-state order, study its response to strain, and evaluate analytic expressions for a specific model. Our results support the $(d + ig)$-superconducting state as a candidate for $\mathrm{Sr}_{2}\mathrm{Ru}\mathrm{O}_{4}$: Most noticeably, the derived strain-dependence is in excellent agreement with recent experiments [Hicks \textit{et al.} Science (2014) and Grinenko \textit{et al.} arXiv (2020)]. The evolution above a non-vanishing strain from a joint onset of superconductivity and time-reversal symmetry-breaking to two split phase transitions provides a testable prediction for this scenario.
