Quantum plasmonic non-reciprocity in parity-violating magnets
arXiv:2202.08284 · doi:10.1021/acs.nanolett.2c03126
Abstract
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.
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- Intrinsic nonreciprocal bulk plasmons in noncentrosymmetric magnetic systems
- Phonons in Electron Crystals with Berry Curvature
- Quantum Metric Nonlinear Spin-Orbit Torque Enhanced by Topological Bands
- Geometric and conventional contributions of superconducting diode effect: Application to flat-band systems
- Flat-band Fulde-Ferrell-Larkin-Ovchinnikov State from Quantum Geometric Discrepancy
- Many-Body Quantum Geometric Dipole
- Effects of the Hubbard interaction on the quantum metric
- Quantum geometry induced microwave enhancement of flat band superconductivity
- Large quantum nonreciprocity in plasmons dragged by drifting electrons
- Anomalous skew scattering of plasmons in a Dirac electron fluid