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Despite having many similarities with graphene, single-layer boron nitride has a very large bandgap. Now, single-layer hybrids consisting of a blend of domains of boron nitride and graphene have been synthesized. By varying the percentage of boron nitride it is possible to tune the electronic properties, which is a very promising development for potential devices.

The layered iron pnictide superconductors are known for their unconventional electronic properties and high critical temperatures. Now, SmFeAs(O,F) is shown to undergo a transition from pinned Abrikosov-like to mobile Josephson-like vortices as the system is cooled below its critical temperature.

The pairing mechanism in kagome superconductors is still not fully understood. Now, CsV₃Sb₅, which belongs to this family, is shown to have orbital-selective pairing with two distinct superconducting domes that are not separated by any phase boundary.

Experimental systems in which non-trivial topology is driven by spontaneous symmetry breaking are rare. Now, topological gaps resulting from two excitonic condensates have been demonstrated in a three-dimensional material.

Transition metal dichalcogenides exhibit diverse and tunable electronic states. Here the authors reveal a cascade of phase transitions upon increasing hydrostatic pressure in the few-layer 1T’-WS₂, including a re-entrant superconducting phase emerging from a normal state exhibiting anomalous Hall effect.

The authors study the non-centrosymmetric achiral material In_xTaS₂ by angle-resolved photoemission spectroscopy and quantum oscillations. They find that it hosts an “ideal” Kramers nodal line, well isolated at the Fermi level.

The interplay between electronic topology and superconductivity is of great current interest in condensed matter physics. Here, the authors unveil an unconventional two-dimensional superconducting state accompanied by a van Hove singularity in the recently discovered Dirac nodal line semimetal ZrAs₂, which is exclusively confined to the top and bottom surfaces.

The symmetry and mechanism underlying unconventional charge orders in Kagome materials are under debate. Here, the authors uncover a longitudinal and helicity-dependent photocurrent in KV₃Sb₅ that indicates broken symmetries and intrinsic chirality.

A hybrid topological phase of matter is discovered in the simple elemental-solid arsenic and explored using tunnelling microscopy, photoemission spectroscopy and a theoretical analysis.

Topologically protected hinge modes could be important for developing quantum devices, but electronic transport through those states has not been demonstrated. Now quantum transport has been shown in gapless topological hinge states.

The experimental studies to understand the superconductivity of superhydrides remain scarce. Here, the authors report pressure and magnetic field dependence of superconductivity in LaH₁₀, and indicate lattice vibrations strongly affect superconducting coupling.

The tunability of electronic properties is a central goal of research into topological semimetals. Here, the authors report Weyl nodal ring states in the magnetic semimetal EuGa₄ and link the nodal ring state to the observed large non-saturating magnetoresistance.

Strong electron correlations often lead to unusual electronic ground states. Here, the authors present evidence for a density wave in the compound CeRhIn₅, the first for a so-called heavy-fermion metal where electrons have a very high effective mass.

Here, the authors report the realization of light-emitting field-effect transistors based on van der Waals heterostructures with conduction and valence band edges at the Γ-point of the Brillouin zone, showing electrically tunable and material-dependent electroluminescence spectra at room temperature.

The discovery of high temperature superconductivity in hydrogen-rich compounds stimulates further extensive studies. Here, the authors report superconductivity in pressurized yttrium-hydrogen system with highest predicted T_c among binary compounds.

It was predicted that in the regime of strong electron-phonon interactions, electrons and phonons can form a coupled non-equilibrium state, characterized by the conservation of the total momentum and by hydrodynamic transport. Here, the authors report experimental evidence for such a coupled electron-phonon liquid in NbGe₂.

The discovery of over 200 K superconductivity excites the community to search for room temperature superconductivity. Here, Mozaffari et al. report the temperature dependence of the upper critical fields of superconducting H₃S under a record-high combination of pressures up to 160 GPa and magnetic fields up to 65 T.

We show that an insulating bulk state and helical edge state coexist in Bi₄Br₄ and that this coexistence persists up to room temperature.

Terahertz light pulses induce transitions between a topological and a trivial phase in the Weyl semimetal WTe₂ through an interlayer shear strain.

An approach is developed for the continuous fabrication of lateral multi-junction heterostructures of transition-metal dichalcogenides, in which the sequential formation of heterojunctions is achieved solely by changing the composition of the reactive gas environment in the presence of water vapour.