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Ultrafast control of quantum materials

Research team involving experimentalists and theorists explores how light can fundamentally alter the properties of solids - and how to harness these phenomena in laser-driven materials for future applications. Their colloquium has been published in Reviews of Modern Physics. more

Nematicity by magnetism in TBG

Researchers in Hamburg and Aachen suggest a surprising connection between the nematic behavior of a superconductor in a magnetic field — a state that resembles liquid crystals used in LCDs — and its spiral-like groundstate in the absence of the field. more

A speed limit for spins

A universal Doppler effect limits the maximal spin current in magnetic insulators which have been driven out of equilibrium by magnetic fields. These findings by an international research team present a surprising parallel to what happens in superconductors driven by electric fields and could aid the design of future nano-devices. more

Direct MRI-like view of spin waves

Researchers gain a direct view of spin waves by placing a diamond chip with a layer of nitrogen vacancy centers on top of a thin magnetic film. Once the spin waves are excited, the NV centers pick up their magnetic fields and enable high-resolution imaging. more

Topological states caught in the act

Researchers show that short-lived topological states can be tracked with equally short light flashes spiraling like a corkscrew, using signal difference between left- and right-handed light. more

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