Nature Physics, Published online: 27 November 2024; doi:10.1038/s41567-024-02703-w
Tracking ultrafast electronic changes in molecules is challenging, especially in liquids. An X-ray spectroscopy study in pyrazine now shows electronic dynamics created at conical intersections that are rapidly suppressed when the molecule is in water.
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- Electronic dynamics created at conical intersections and its dephasing in aqueous solution
- Measurements of the quantum geometric tensor in solidsNature Physics, Published online: 25 November 2024; doi:10.1038/s41567-024-02678-8 Experiments that directly probe the quantum geometric tensor in solids have not been reported. Now, the quantum metric and spin Berry curvature—dual components of the quantum geometric tensor—have been simultaneously measured in reciprocal space.
- Quantum geometry in solids measured using photo-emitted electronsNature Physics, Published online: 25 November 2024; doi:10.1038/s41567-024-02681-z Quantum geometry gives rise to many fascinating phenomena in solids that go beyond Landau theory. A general framework is now introduced to measure the quantum geometric tensor in solids — a fundamental physical quantity that encodes the complete geometric information of the Bloch state.
- Super- and subradiant dynamics of quantum emitters mediated by atomic matter wavesNature Physics, Published online: 18 November 2024; doi:10.1038/s41567-024-02676-w Experiments on cooperative radiative decay typically involve rapidly escaping photons. Collective emission dynamics have now been studied in an array of quantum emitters interacting via atomic matter waves in a novel regime of slow propagation.
- Universal dynamics exposed by interaction quenchesNature Physics, Published online: 14 November 2024; doi:10.1038/s41567-024-02704-9 Universal dynamics exposed by interaction quenches
- Highly anisotropic superconducting gap near the nematic quantum critical point of FeSe<sub>1−<i>x</i></sub>S<sub><i>x</i></sub>Nature Physics, Published online: 13 November 2024; doi:10.1038/s41567-024-02683-x Superconductivity that is mediated by fluctuations of a nematic electronic order has not been experimentally demonstrated. Now an analysis of the symmetry of the superconducting gap in doped FeSe provides evidence of this phenomenon.
- Islands identifiedNature Physics, Published online: 13 November 2024; doi:10.1038/s41567-024-02670-2 Filamentary eruptions from the plasma edge in fusion devices pose a critical threat to their integrity. The identification of magnetic islands at the top of the edge explains how these eruptions are suppressed by resonant magnetic perturbations.
- Nematic fluctuations shape Cooper pairsNature Physics, Published online: 13 November 2024; doi:10.1038/s41567-024-02693-9 Experimental evidence of nematic-fluctuation-mediated superconductivity has been observed in an iron-based superconductor near the quantum critical point.
