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Nature Physics, Published online: 10 August 2020; doi:10.1038/s41567-020-0999-1

Magnons are collective excitations that dictate many of a magnet’s low-temperature properties. By means of Raman scattering, the magnon spectra of CrI3 are measured in the monolayer limit.

Nature Physics, Published online: 17 August 2020; doi:10.1038/s41567-020-0998-2

A three-dimensional topological magnetic superlattice structure exhibits the quantum anomalous Hall effect when the Fermi energy is tuned into the correct energy window.

Nature Physics, Published online: 24 August 2020; doi:10.1038/s41567-020-1005-7

High-quality WSe2–MoSe2 heterostructures support strong coupling between the two layers, which is associated with tight hybridization and effective charge separation. In these structures, the bands of the interlayer excitons can be pressure-engineered.

Nature Physics, Published online: 14 September 2020; doi:10.1038/s41567-020-1030-6

Transport measurements show that spontaneous symmetry breaking plays a crucial role in the correlated insulating and metallic states in twisted double bilayer graphene.

Nature Physics, Published online: 27 July 2020; doi:10.1038/s41567-020-0988-4

The Mott insulator ground state is a crucial feature of high-temperature superconductors such as the cuprates. Here, the authors find an exactly solvable model that contains both superconductivity and Mottness.

Nature Physics, Published online: 27 July 2020; doi:10.1038/s41567-020-0974-x

The flat electronic bands that are associated with ordered phases in twisted bilayer graphene at a magic twist angle have been imaged using angle-resolved photoemission spectroscopy.

Nature Physics, Published online: 22 June 2020; doi:10.1038/s41567-020-0942-5

The quantum Hall effect is realized in a two-dimensional quantum gas system consisting of one spatial dimension and one synthetic dimension encoded in the atomic spin. Measurements show distinct bulk properties rooted in the topological structure.

Nature Physics, Published online: 22 June 2020; doi:10.1038/s41567-020-0936-3

This paper shows how lattice distortions induced by a laser pulse can create a ferrimagnetic moment in an antiferromagnet. This mechanism gives a magnetic response that is orders of magnitude larger than using mechanical strain.

Nature Physics, Published online: 29 June 2020; doi:10.1038/s41567-020-0949-y

Standard topological invariants commonly used in static systems are not enough to fully capture the topological properties of Floquet systems. In a periodically driven quantum gas, chiral edge modes emerge despite all Chern numbers being equal to zero.

Nature Physics, Published online: 29 June 2020; doi:10.1038/s41567-020-0947-0

A memory device is proposed that uses a dynamical modification of the stacking order of few-layer WTe2 to encode information. The change in stacking modifies both the Berry curvature and the Hall transport, allowing two states to be distinguished.

Nature Physics, Published online: 29 June 2020; doi:10.1038/s41567-020-0955-0

Transport and optical conductivity measurements reveal the non-Fermi liquid behaviour in correlated semimetal Nd2Ir2O7. The result implies the emergent collective charge transport in this compound, not reconcilable with conventional band theory.

Nature Physics, Published online: 07 July 2020; doi:10.1038/s41567-020-0905-x

The breakdown of superconductivity is described as a reduction in the amplitude of the order parameter or a breakdown in phase coherence of Cooper pairs. This Review Article highlights recent results that show both mechanisms may be at play simultaneously.

Nature Physics, Published online: 07 July 2020; doi:10.1038/s41567-020-0925-6

Hybrid devices of superconductors and semiconductor nanowires may be topological and host majorana. This Perspective summarizes the current situation of the field, and highlights the developments in materials science required to make progress.