论文标题
在磁场诱导的LIFSHITTINE中，新兴顺序的原子级成像
Atomic-scale imaging of emergent order at a magnetic-field-induced Lifshitz transition
论文作者
论文摘要
在过去的几十年中，跨越量子相变的材料特性中看到的现象学和根本变化吸引了凝结的问题。强的电子相关性导致新型的电子接地态，包括磁性，nematicity和非常规超导性。为这些提供微观模型，需要详细了解费米能量附近的电子结构，并有望完全理解量子临界点的物理。在这里，我们在SR $ _3 $ ru $ _2 $ o $ $ _7 $的表面上演示了这样的测量。我们的结果表明，即使在零字段中，电子结构也是强烈的$ C_2 $对称性，并且磁场既可以驱动Lifshitz过渡并诱导电荷条纹顺序。我们在超高温度下通过准粒子干扰成像跟踪电子结构的变化。我们的结果提供了整个LIFSHITZ过渡的现场诱导的电子结构变化的完整微观图片。
The phenomenology and radical changes seen in materials properties traversing a quantum phase transition has captivated condensed matter research over past decades. Strong electronic correlations lead to novel electronic ground states, including magnetic order, nematicity and unconventional superconductivity. Providing a microscopic model for these requires detailed knowledge of the electronic structure in the vicinity of the Fermi energy, promising a complete understanding of the physics of the quantum critical point. Here, we demonstrate such a measurement at the surface of Sr$_3$Ru$_2$O$_7$. Our results show that, even in zero field, the electronic structure is strongly $C_2$ symmetric and that a magnetic-field drives both a Lifshitz transition and induces a charge-stripe order. We track the changes of the electronic structure as a function of field via quasi-particle interference imaging at ultralow temperatures. Our results provide a complete microscopic picture of the field-induced changes of the electronic structure across the Lifshitz transition.
