Nature Physics, Published online: 20 March 2025; doi:10.1038/s41567-025-02803-1
It may be possible to find non-Abelian electronic states in the higher bands of flat-band materials. Now a detailed transport study of the second moiré band of twisted bilayer MoTe2 maps out several topological and magnetic states.
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- Interplay between topology and correlations in the second moiré band of twisted bilayer MoTe<sub>2</sub>
- High-resolution tunnelling spectroscopy of fractional quantum Hall statesNature Physics, Published online: 20 March 2025; doi:10.1038/s41567-025-02830-y Local probes of quantum Hall states are still in their infancy. Now scanning tunnelling measurements were used to extract the energy gap of candidate non-Abelian fractional states, which are found to be encouragingly large for applications.
- Superconductivity controlled by twist angle in monolayer NbSe<sub>2</sub> on grapheneNature Physics, Published online: 20 March 2025; doi:10.1038/s41567-025-02828-6 Rotating material layers with respect to each other can change their electronic properties. Now, superconducting quasiparticles with a twisted configuration are demonstrated in a NbSe2 monolayer on graphene by controlling the twist angle.
- Ferromagnetism and topology of the higher flat band in a fractional Chern insulatorNature Physics, Published online: 20 March 2025; doi:10.1038/s41567-025-02804-0 In analogy with quantum Hall systems, it may be possible to find non-abelian anyons in the higher bands of Chern insulators. Now, the phase diagram of the second moiré band of twisted MoTe2 is explored, laying the groundwork for such investigations.
- Twisted path to Landau levelsNature Physics, Published online: 20 March 2025; doi:10.1038/s41567-025-02837-5 Two studies reveal that twisted MoTe2 hosts multiple topological flat bands, mimicking Landau levels without a magnetic field. These topological correlated states may enable non-Abelian excitations and advances in quantum computation.
- A metallic room-temperature d-wave altermagnetNature Physics, Published online: 18 March 2025; doi:10.1038/s41567-025-02822-y Metallic altermagnets are promising for applications due to the spin-polarized electric current that originates from their spin-split band structure. Now d-wave altermagnetism with antisymmetric spin polarization has been demonstrated in KV2Se2O.
- Jet hammers and boring ultrasoundNature Physics, Published online: 18 March 2025; doi:10.1038/s41567-025-02833-9 Microbubbles exposed to ultrasound generate cyclic jets that create pores in cellular membranes and bore tunnels through cell junctions.
- Detection of fractional quantum Hall states by entropy-sensitive measurementsNature Physics, Published online: 17 March 2025; doi:10.1038/s41567-025-02813-z Fractional quantum Hall states can be fragile, meaning that they are difficult to probe using electrical transport measurements. Now, thermal transport is shown to be a more sensitive technique for investigating these states.
