Nature Physics, Published online: 09 May 2024; doi:10.1038/s41567-024-02493-1The symmetry of the superconducting order parameter in UTe2 is still debated. Now ultrasound experiments suggest that the order parameter can only have one component.

Nature Physics, Published online: 09 May 2024; doi:10.1038/s41567-024-02498-wSome magnetic phase transitions can be understood as Bose–Einstein condensation of magnons. Close to a quantum critical point, YbCl3 now provides a realization of a Bose–Einstein condensate that is dominated by two-dimensional physical behaviour.

Nature Physics, Published online: 09 May 2024; doi:10.1038/s41567-024-02495-zA Dirac quantum spin liquid phase is predicted to have a continuum of fractionalized spinon excitations with a Dirac cone dispersion. A spin continuum consistent with this picture has now been observed in neutron scattering measurements.

Nature Physics, Published online: 06 May 2024; doi:10.1038/s41567-024-02442-yRotational symmetry is shown to protect the quadratic dispersion of out-of-plane flexural vibrations in graphene and other two-dimensional materials against phonon–phonon interactions, making the bending rigidity of these materials non-divergent. The quadratic dispersion is...

Nature Physics, Published online: 06 May 2024; doi:10.1038/s41567-024-02497-xThe hybrid architecture of Andreev spin qubits made using semiconductor–superconductor nanowires means that supercurrents can be used to inductively couple qubits over long distances.

Nature Physics, Published online: 06 May 2024; doi:10.1038/s41567-024-02481-5A successful silicon spin qubit design should be rapidly scalable by benefiting from industrial transistor technology. This investigation of exchange interactions between two FinFET qubits provides a guide to implementing two-qubit gates for hole spins.