Physics

University of Fribourg physicists used ultrafast laser pulses to briefly turn semiconducting tin telluride into a topological conductor, confirmed by time-resolved photoemission spectroscopy and published in Nature Physics.

The EPS honored Jairo Sinova, Libor Šmejkal, and Tomas Jungwirth for identifying altermagnetism, a third fundamental class of magnetism.

Penn State researchers found a viscous particle suspension can hold a memory of stirring direction and a memory of rocking amplitude at once, and the two compete.

Neutron-scattering measurements at ILL Grenoble found signs that at least nine particles are quantum-entangled at once inside a centimeter-sized strange-metal crystal, the deepest entanglement reported in any quantum material.

A PNAS study using custom-built 'silly sprinklers' confirms momentum flux drives reverse-sprinkler rotation, ruling out theories from Ernst Mach and Richard Feynman.

Giovanni Barontini used 24,000 ultracold rubidium atoms to test whether time can be defined from a system's internal disorder rather than an external clock.

Using a single trapped strontium-88 ion, an Oxford group built cat states whose components are themselves squeezed and trisqueezed states, reporting Wigner negativity and greater quantum resourcefulness than standard cat or Fock states.

Juno detected electrons reaching 1 MeV in Jupiter's foreshock, and the authors derive a scaling law linking shock size to maximum particle energy.

A Penn State-led study in Physical Review Letters argues that the highest-energy cosmic rays, including the Amaterasu particle, may be nuclei heavier than iron that lose energy slowly enough to reach Earth.

A Mamyshev oscillator on an erbium-doped silicon nitride chip delivers 1.05 nJ pulses as short as 147 fs, matching tabletop femtosecond lasers.

A Monash University team reports in Nature Photonics the first integrated chip that can create, route, and read information carried in light's 'valley' degree of freedom.

Researchers at Aalto University demonstrated they can connect a continuous time crystal to a mechanical oscillator without destroying it, turning the exotic quantum state into an optomechanics-like platform that ran for up to 108 cycles.