Nature Physics, Published online: 07 April 2026; doi:10.1038/s41567-026-03226-2
Physical networks can learn to accomplish tasks on the fly by adjusting their internal parameters. Now it is shown that such physical learning can be achieved in metamaterials that can learn to change shape.
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- Metamaterials that learn to change shape
- Double-edged role of interactions in superconducting twisted bilayer grapheneNature Physics, Published online: 07 April 2026; doi:10.1038/s41567-026-03243-1 It is unclear whether the superconducting pairing in moiré graphene is driven primarily by electronic interactions. Now, by tuning the electrostatic environment, the authors show that these interactions may play a crucial role in both mediating the pairing and screening it.
- Self-organized elastic membranes with life-like oscillatory dynamicsNature Physics, Published online: 07 April 2026; doi:10.1038/s41567-026-03238-y Chaotic flows generated by a microtubule-based active fluid are shown to enhance the motion of passive actin fibres and assemble them into a hierarchical elastic membrane. Active flows also actuate the multiscale dynamics of the emerging membrane, and non-reciprocal feedback between the active and elastic stresses yields macroscopic oscillations.
- Quantum ground-state cooling of two librational modes of a nanorotorNature Physics, Published online: 06 April 2026; doi:10.1038/s41567-026-03219-1 Controlling the rotational motion of nanoscale objects by trapping and cooling is a prerequisite for exploring quantum rotational phenomena. Now, two orthogonal librational modes of a levitated nanorotor are cooled into their quantum ground state.
- Length-scale dependence of the anomalous atomic motion in metallic glassesNature Physics, Published online: 06 April 2026; doi:10.1038/s41567-026-03228-0 Synchrotron experiments show that the anomalous hyper-diffusive atomic motion in metallic glasses corresponds to a regime of medium-length-scale order, resulting from internal stresses developed throughout the glass transition.
- Evidence for odd-parity superconductivity underpinned by antiferromagnetism in heavy-fermion metal YbRh<sub>2</sub>Si<sub>2</sub>Nature Physics, Published online: 03 April 2026; doi:10.1038/s41567-026-03247-x Odd-parity spin-triplet superconductivity remains difficult to establish experimentally. Now, several distinct magnetic-field-tuned superconducting states—including a possible topological helical phase—have been identified in YbRh2Si2.
- Wetting by active fluidsNature Physics, Published online: 03 April 2026; doi:10.1038/s41567-026-03208-4 Theoretical descriptions of surface wetting so far cover only equilibrium situations and therefore do not describe active matter. Now a formalism for the description of the wetting of a surface by self-propelled particles is presented.
- A crystal of neutral excitonsNature Physics, Published online: 03 April 2026; doi:10.1038/s41567-026-03244-0 Interlayer excitons are neutral particles, which are prevalent in transition metal dichalcogenide heterostructures. Now, long-range repulsive interactions between these neutral particles leads to the formation of a crystal.
