Light-matter Interaction

Researchers at the MPSD and Brookhaven National Laboratory used two-dimensional terahertz spectroscopy (2DTS) in a non-collinear geometry for the first time to isolate specific terahertz nonlinearities in the cuprate superconductor La_1.83Sr_0.17CuO₄ by their emission direction. Their work has been published in Nature Physics. more

The workshop in northern Spain, organised by the New York City Center on Non-Equilibrium Quantum Phenomena, provided the perfect forum to discuss some key questions for the quantum science era. more

The multiferroic NiI₂ has greater magnetoelectric coupling than any known material of its kind, making it a prime candidate for technology advances, an international research team reports in Nature.  more

Researchers in the Cavalleri group discover that photo-excited YBa₂Cu₃O_6.48, in addition to featuring near zero resistance, also expels a static magnetic field from its interior. Their work has been published in Nature. more

A theory team from the MPSD collaborating with researchers in the United States and Switzerland has explained the key mechanism leading to terahertz amplification in the excitonic insulator candidate Ta₂NiSe₅. The work has been published in Nature Communications. more