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Nature Physics, Published online: 01 June 2020; doi:10.1038/s41567-020-0928-3

Here, it is shown that superconductivity can exist without correlated insulating states in twisted bilayer graphene devices a little away from the magic angle. This indicates the two phases compete with each other, in contrast to previous claims.

Nature Physics, Published online: 16 March 2020; doi:10.1038/s41567-020-0816-x

One way of producing Majorana fermions for topological quantum computing is to induce superconductivity in other topological states. Here, the proximity effect does this for the quantum spin Hall effect state in a 2D material.

Nature Physics, Published online: 30 March 2020; doi:10.1038/s41567-020-0825-9

Placing two Bernal-stacked graphene bilayers on top of each other with a small twist angle gives correlated states. As the band structure can be tuned by an electric field, this platform is a more varied setting to study correlated electrons.

Nature Physics, Published online: 13 April 2020; doi:10.1038/s41567-020-0874-0

α-RuCl3 is a promising candidate for realizing the Kitaev quantum spin liquid, but the physics governing its magnetic behaviour remain elusive. Resonant elastic X-ray scattering data now set unambiguous constraints on the leading terms in the Hamiltonian.