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The Cheshire Cat’s grin: Cooper pairs found above superconducting critical temperature in pair density waves
A Fourier transform revealing spatial patterns on the surface at 300 millikelvins. A charge density wave signals the presence of the pair density wave. The background is tellurium atoms on the surface of uranium ditelluride. @University of Illinois Urbana-Champaign’s Grainger College of Engineering Physicists with the University of Illinois Urbana-Champaign’s Grainger College of Engineering have identified a new form of superconducting behavior. Experiments on the metal urani
Oct 26 min read
MPSD researchers contribute to a systematic search for new twisted quantum materials
Stack two atomically thin layers, rotate one slightly against the other, and a new material emerges. The resulting moiré pattern can slow electrons down so much that their interactions take over. This produces superconductivity, magnetism and exotic fractional quantum states that neither layer shows on its own. This field, known as twistronics, has become one of the most active frontiers in condensed matter physics. So far, however, it has been built on only a handful of mate
Sep 305 min read


Making X-ray movies for ultrafast dynamics in nanomatter
From a two-colour diffraction pattern (left), two snapshots of a helium droplet doped with xenon nanoparticles can be reconstructed (centre). These images can inform a potential 3D rendering of a xenon-doped helium nanodroplet (right). An overarching goal of ultrafast science is to enable researchers to watch structural changes in matter on their natural timescale. Experimentally, this translates into taking two snapshots of the same nanoscale object that are only femtosecond
Sep 294 min read


Waves find order in the chaos of an oddly shaped cavity
Artistic rendering of a hyperbolic wave attractor forming in an odd-shaped cavity inside a hyperbolic material. Credit: Andrea Alu NEW YORK, September 28, 2026 — When light or sound bounces around inside an oddly shaped room, its reflections can quickly become difficult to predict. But new research led by scientists at the Advanced Science Research Center at the CUNY Graduate Center (CUNY ASRC) shows that waves can behave very differently when they travel through a special cl
Sep 284 min read


Outrunning the vortices: Picosecond pulses push superconductors beyond their critical-current limit
image: <p>A current pulse lasting only a few picoseconds passes through a superconductor before magnetic vortices have time to move. This lets the current reach far beyond the usual critical current, up to the point where Cooper pairs begin to break apart.</p> Credit: © Jörg Harms, Eryin Wang (MPSD) Superconductivity is one of the most striking collective phenomena in quantum materials. When certain materials are cooled below a characteristic transition temperature, thei
Sep 243 min read


Spin waves inside a nano-oscillator imaged for the first time
Measurements on Maxymus show (left) that the magnon amplitude does not increase uniformly at both edges of the constriction, but only at one edge. This experimental finding can only be reproduced by micromagnetic simulations if three effects that have hitherto been neglected are taken into account (right). © Advanced Materials (2026): DOI: 10.1002/adma.74547 For the first time, researchers have directly imaged the magnetisation dynamics inside a spin Hall nano-oscillator — a
Sep 233 min read
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