单极子等离子体共振：三维\(U(1)\)量子自旋液体的关键证据
The monopole plasma resonance: a smoking gun of 3D $U(1)$ quantum spin liquids
浏览论文内容
中文总结 AI 辅助
研究三维\(U(1)\)自旋液体中涌现单极子现象，其在低温下形成等离子体，与规范场耦合使系统直流输运呈绝缘但低频有类似金属的等离子体共振，探讨在候选物\(Ce_2Zr_2O_7\)中观察此现象的最佳条件。
中文摘要 AI 辅助
某些三维\(U(1)\)自旋液体，如偶极量子自旋冰中产生的那些，具有涌现单极子，它是一种在对称性下变换的涌现磁场的源，如同电极化。因此，这些单极子在其核心携带物理电荷并在低温下形成等离子体。由于单极子与涌现规范场耦合，整个系统对直流输运表现为电绝缘体，但在非常低的频率下可显示类似于金属的尖锐等离子体共振。这可作为在材料中检测这些状态的清晰指纹。我们讨论了在三维\(U(1)\)自旋液体候选物\(Ce_2Zr_2O_7\)中观察此现象的最佳条件。
英文摘要
Certain 3D $U(1)$ spin liquids, such as those arising in dipolar quantum spin ice, have an emergent monopole which is the source of an emergent magnetic field that transforms under symmetries like an electric polarization. As a consequence, these monopoles carry a physical electric charge in their cores and form a plasma at low temperatures. Due to the monopole coupling to emergent gauge fields, the full system behaves as an electrical insulator for DC transport, but can display a sharp plasma resonance analogous to a metal at very low frequencies. This can serve as a clear fingerprint to detect these states in materials. We discuss the optimal conditions to observe this phenomenon in the 3D $U(1)$ spin-liquid candidate Ce$_2$Zr$_2$O$_7$.
