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When a system is driven across a second-order phase transition, defects can form because it cannot respond quickly enough to the new conditions. The Kibble–Zurek mechanism explains this physics, and has now been invoked for Ising-type domains.
Observation of a faint Fermi surface inside the pseudogap of an electron-doped cuprate suggests that Cooper pairing is mediated by antiferromagnetic spin fluctuations.
Material characterization of liquids in extreme thermodynamic conditions is a challenging technical problem. Brillouin scattering metrology in an optical fibre design with a sealed liquid core now enables spatially resolved temperature and pressure measurements, using carbon disulfide as an example.
Na3Ni2BiO6 with a honeycomb lattice is found to host a one-third magnetization plateau phase signifying frustrated interactions and indicates that Kitaev interactions can be realized in high-spin magnets.
The origin of nematicity in kagome superconductors has been hard to explain due to other entangled phases. Now, the role of orbital hybridization and coupling is revealed to induce electronic nematicity in the kagome superconductor RbTi3Bi5.
The Magnus effect refers to rotating objects developing a lift force when travelling through a fluid. It normally vanishes at microscopic length scales but now a very large Magnus effect is demonstrated for spinning colloids in viscoelastic fluids.
Local thermodynamic measurements of a twisted transition metal dichalcogenide heterostructure reveal competition between unconventional charge order and Hofstadter states. This results from the presence of both flat and dispersive electronic bands, whose energetic ordering can be experimentally tuned.
A trilayer copper oxide superconductor, which exhibits the highest superconducting critical temperature as a function of the number of copper–oxygen planes, is shown to have unusual doped hole distribution and interaction between the planes.
The interplay between flat and dispersive bands in moiré materials has not yet been examined in detail. Now, the phase diagram of a transition metal dichalcogenide bilayer shows correlated states arising from both types of band.
Wrinkling of cell nuclei is associated with disease. During development, the nucleus behaves like a sheet of paper and the wrinkling amplitude can be manipulated without changing its pattern.
Hubbard excitons are elusive quasiparticles that are predicted to form in strongly correlated insulators. Detecting their internal structure and dynamics clarifies the involvement of spin fluctuations in their binding and recombination processes.
Measurements of the electronic structure of a trilayer cuprate superconductor suggest that its high critical temperature is explained by the different doping levels of the layers. The combination of underdoped inner layer and overdoped outer layers supports superconductivity.
Hole and particle-like quasiparticles of a Mott insulator can pair into excitonic bound states. Now, time-resolved measurements of Sr2IrO4 show signs of an excitonic fluid forming from a photo-excited population of quasiparticles.
Phonons that carry a large magnetic moment may be helpful for creating spintronic devices. Now this phenomenon is observed in an antiferromagnet and is enhanced by the critical fluctuations associated with a phase transition.
Claims of a room-temperature, ambient-pressure superconductor recently kicked up a storm on social media. As the dust settles, we take stock of what this experience can teach us.
Originally invented to improve cornering techniques in race driving, speed traps contribute to road safety. Robert Wynands introduces us to tools of traffic metrology.
