Nature Physics, Published online: 30 July 2026; doi:10.1038/s41567-026-03321-4
Using Brillouin-based phonon spectroscopy, surface interactions have been identified as the dominant source of phonon decoherence in crystalline media. When these interactions are reduced through chemical mechanical polishing, high-frequency bulk acoustic wave oscillators can be realized with record Q-factors and coherence times, suitable for use as long-lived solid-state quantum memories.
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- Long-lived phonons from resonators with reduced surface interactions
- Rotation through soundNature Physics, Published online: 30 July 2026; doi:10.1038/s41567-026-03384-3 Detecting quantized circulation in strongly correlated matter is challenging. Now it has been shown that phononic interferometry can reveal the quantized angular momentum of a strongly interacting rotating superfluid.
- Standards in spaceNature Physics, Published online: 29 July 2026; doi:10.1038/s41567-026-03355-8 Separating long-term trends in the Earth system from instrumental drift is challenging. Yolanda Shea, Peter Pilewskie, and Rajendra Bhatt describe the push for gold-standard references in space.
- Superconductivity under pressure in a van der Waals heavy-fermion metalNature Physics, Published online: 28 July 2026; doi:10.1038/s41567-026-03392-3 CeSiI is a two-dimensional heavy-fermion metal. Now, the interplay between antiferromagnetism, Kondo coherence and unconventional superconductivity is observed by applying pressure to this material.
- Conductance measurements cannot distinguish crossed Andreev reflection from elastic co-tunnelling in normal–superconductor–normal junctionsNature Physics, Published online: 28 July 2026; doi:10.1038/s41567-026-03377-2 Conductance measurements cannot distinguish crossed Andreev reflection from elastic co-tunnelling in normal–superconductor–normal junctions
- Superconductivity with a squeezeNature Physics, Published online: 28 July 2026; doi:10.1038/s41567-026-03393-2 Heavy-fermion superconductivity has now been observed under pressure in the van der Waals metal CeSiI. This material will provide a new platform for studying the interplay of dimensionality and Kondo physics.
- Reply to: Conductance measurements cannot distinguish crossed Andreev reflection from elastic co-tunnelling in normal–superconductor–normal junctionsNature Physics, Published online: 28 July 2026; doi:10.1038/s41567-026-03376-3 Reply to: Conductance measurements cannot distinguish crossed Andreev reflection from elastic co-tunnelling in normal–superconductor–normal junctions
- Topological phase transitions and mixed-state order in a Hubbard quantum simulatorNature Physics, Published online: 27 July 2026; doi:10.1038/s41567-026-03381-6 Topological phases can be hard to distinguish with local measurements. Now, a transition between two such phases has been revealed in ultracold erbium atoms, and shown to disappear when two systems are stacked or information about disorder is lost.
