Nature Physics, Published online: 15 July 2024; doi:10.1038/s41567-024-02537-6
Plasmonic excitations can enhance the interaction between a metal and molecules adsorbed onto its surface. This Review summarizes the different effects involved in this process and places them into a framework based on electron scattering.
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- Electronic excitations at the plasmon–molecule interface
- Terahertz spectroscopy of collective charge density wave dynamics at the atomic scaleNature Physics, Published online: 15 July 2024; doi:10.1038/s41567-024-02552-7 The observation of phase modes of charge density wave has been a long-standing challenge. Such low-energy phase excitations have now been seen in a transition metal dichalcogenide.
- On the limitations of the semi-classical picture in high harmonic generationNature Physics, Published online: 11 July 2024; doi:10.1038/s41567-024-02579-w High harmonic generation has long been successfully described using the semi-classical three-step model. However, recent progress has introduced a quantum optical formulation, exposing the limitations of the semi-classical picture.
- A way to cross the Andreev bridgeNature Physics, Published online: 10 July 2024; doi:10.1038/s41567-024-02575-0 Inducing superconductivity in quantum anomalous Hall insulators is crucial to realize topological superconductors. Now a study shows superconducting correlations in the quantum anomalous Hall state, which can convert electrons on its one-way path into holes.
- Induced superconducting correlations in a quantum anomalous Hall insulatorNature Physics, Published online: 10 July 2024; doi:10.1038/s41567-024-02574-1 The superconducting proximity effect has not been experimentally demonstrated in a quantum anomalous Hall insulator. Now this effect is observed in the chiral edge state of a ferromagnetic topological insulator.
- The biophysical basis of bacterial colony growthNature Physics, Published online: 09 July 2024; doi:10.1038/s41567-024-02572-3 The growth of a biofilm—a bacterial colony attached to a surface—is governed by a trade-off between horizontal and vertical expansion. Now, it is shown that this process significantly depends on the contact angle at the biofilm’s edge.
- Fully nonlinear neuromorphic computing with linear wave scatteringNature Physics, Published online: 09 July 2024; doi:10.1038/s41567-024-02534-9 As the energy consumption of neural networks continues to grow, different approaches to deep learning are needed. A neuromorphic method offering nonlinear computation based on linear wave scattering can be implemented using integrated photonics.
- Nonlinear computation with linear systemsNature Physics, Published online: 09 July 2024; doi:10.1038/s41567-024-02531-y Nonlinearity is crucial for sophisticated tasks in machine learning but is often difficult to engineer outside of electronics. By encoding the inputs in parameters of the system, linear systems can realize efficiently trainable nonlinear computations.
