quantum materials

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.

Jyväskylä and Aalto researchers grew strained bilayer tin telluride on niobium diselenide, producing protected conducting edge states in a band gap over 0.2 eV.

A European team used muon spin spectroscopy under hydrostatic pressure to show that squeezing Y-kapellasite suppresses its magnetic order without any structural change, producing a clean quantum spin liquid state driven purely by geometric frustration.

University of Pennsylvania researchers demonstrated strongly nonlinear exciton-polaritons that switch optical signals at 4 femtojoules—a record low for 2D polariton systems—using a MoSe₂ monolayer inside a photonic crystal nanocavity.

A quantum-inspired tensor network method achieves exponential speedup on topological quasicrystals, opening a feedback loop between quantum materials and quantum computer design.

Researchers at the Indian Institute of Science report a quantum-critical electron fluid in graphene with viscosity near the theoretical lower bound and a dramatic decoupling of heat and charge transport.

Two back-to-back Nature papers show that removing excess iron atoms from iron telluride unlocks superconductivity at 13.5 Kelvin, overturning a longstanding assumption and suggesting similar hidden quantum states may exist in other correlated materials.

ETH Zurich and University of Basel researchers permanently reversed a ferromagnet's polarity using only laser light in twisted bilayer molybdenum ditelluride, published in Nature.