论文标题
平等侵略磁铁中的量子等离子体非循环性
Quantum plasmonic non-reciprocity in parity-violating magnets
论文作者
论文摘要
金属的光学响应通常由等离子共振 - 相互作用的电子液体的集体振荡。在这里，我们推出了一类新的等离子体 - 量子公制等离子体（QMP） - 在违反磁力的奇偶校验中出现。在这些材料中，量子公制的偶极分布（Bloch波函数的基本特征）会产生内在的非近临界大块等离子体。令人惊讶的是，即使单粒子分散体是对称的，QMP非股展也会表现出来：QMP对隐藏在Bloch波函数中的时间反转和平均违规敏感。在具有非对称单粒子分散液的材料中，量子公制偶极子诱导的非股骨能力可以继续在很大的频率下继续占主导地位。我们预计QMP可以在违反磁铁的各种奇偶校验中实现，包括扭曲的双层石墨烯异质结构，其中量子几何量可以实现较大的值。
The optical responses of metals are often dominated by plasmonic resonances - the collective oscillations of interacting electron liquids. Here we unveil a new class of plasmons - quantum metric plasmons (QMPs) - that arise in a wide range of parity violating magnetic metals. In these materials, a dipolar distribution of the quantum metric (a fundamental characteristic of Bloch wavefunctions) produces intrinsic non-reciprocal bulk plasmons. Strikingly, QMP non-reciprocity manifests even when the single-particle dispersion is symmetric: QMPs are sensitive to time-reversal and parity violations hidden in the Bloch wavefunction. In materials with asymmetric single-particle dispersions, quantum metric dipole induced non-reciprocity can continue to dominate at large frequencies. We anticipate that QMPs can be realized in a wide range of parity violating magnets, including twisted bilayer graphene heterostructures, where quantum geometric quantities can achieve large values.
