标题： 几何正交金属：涨落条纹中的隐含反铁磁性和赝能隙 显示英文标题

标题： Geometric orthogonal metals: Hidden antiferromagnetism and pseudogap from fluctuating stripes

摘要： 空穴掺杂铜氧化物的一个关键特征是存在一个扩展的赝隙相，其微观起源自发现以来一直是激烈研究的主题，并被认为对于理解高温超导性至关重要。 对于赝隙提出了各种解释，包括与对称性破缺序如条纹或配对的联系，以及新奇的分数量子费米液体（FL*）和正交金属（OM）相的出现。 FL*和OM相的拓扑性质已被识别为与无对称性破缺的小费米面相容的情况，如实验所建议的那样。 随着最近的实验和数值研究支持条纹序与赝隙相之间的复杂关系，我们在此提出一种替代情景：由波动畴壁驱动的几何起源正交金属（GOM）。 我们提议背后的本质机制是隐藏序，其中由电荷涨落稳定的畴壁的增殖掩盖了实空间中的底层长程反铁磁序，但在背景自旋的参考系中保持了序。 因此，以磁极子形式存在的明确的费米子准粒子存在，它们耦合到基态中畴壁弦网凝聚体的$\mathbb{Z}_2$拓扑激发，并构成一个小的费米面。 在临界掺杂值处，我们认为隐藏序被破坏，导致在隐藏量子临界点（hQCP）处向常规费米液体的转变，该点具有量子临界输运特性。 我们的GOM框架建立了反铁磁、条纹和赝隙相之间的深刻联系，并暗示了电子和空穴掺杂铜氧化物以及重费米子化合物中超导性的可能统一。 显示英文摘要

摘要： One of the key features of hole-doped cuprates is the presence of an extended pseudogap phase, whose microscopic origin has been the subject of intense investigation since its discovery and is believed to be crucial for understanding high-temperature superconductivity. Various explanations have been proposed for the pseudogap, including links to symmetry-breaking orders such as stripes or pairing, and the emergence of novel fractionalized Fermi liquid (FL*) and orthogonal metal (OM) phases. The topological nature of FL* and OM phases has been identified as scenarios compatible with a small Fermi surface without symmetry breaking, as suggested experimentally. With recent experimental and numerical studies supporting an intricate relationship between stripe order and the pseudogap phase, we here propose an alternative scenario: an orthogonal metal with a geometric origin (GOM) driven by fluctuating domain walls. The essential mechanism behind our proposal is hidden order, where the proliferation of domain walls stabilized by charge fluctuations obscures the underlying long-range antiferromagnetic order in real-space, but order is preserved in the reference frame of the background spins. As a result, well-defined fermionic quasiparticles in the form of magnetic polarons exist, which couple to $\mathbb{Z}_2$ topological excitations of the domain wall string-net condensate in the ground state and constitute a small Fermi surface. At a critical doping value, we argue that hidden order is lost, driving a transition to a regular Fermi liquid at a hidden quantum critical point (hQCP) featuring quantum critical transport properties. Our GOM framework establishes a deep connection between the antiferromagnetic, stripe, and pseudogap phases, and suggests a possible unification of superconductivity in (electron and hole) doped cuprates and heavy fermion compounds.