New insights into the kagome metal AV<sub>3</sub>Sb<sub>5</sub>

An investigation of the Kagome metal AV3Sb5 without external perturbations has yielded new insights into this group of materials. The work, now published in Nature Physics, is a crucial step in order to understand the intrinsic electronic ground state of this material.  more

New insights into light-induced ferroelectricity in SrTiO<sub>3</sub>

Measurements of the fluctuations of the atomic positions in SrTiO3 under mid-infrared light yield new insights into the creation of the material’s ferroelectric state. An MPSD research team reports in Nature Materials that the material transforms into a state of permanently ordered electrical dipoles.  more

Illuminating the hidden properties of TNS

Researchers at the University of California San Diego and the MPSD have used an advanced optical technique to learn more about Ta2NiSe5 (TNS), with a broadened range of frequencies. The MPSD’s Theory Group provided DFT calculations for the study. more

Phonon-enhanced nonlinearities in layered materials

New study published in Nature Communications by members of the Theory Department sheds light on the optical nonlinearities induced and amplified by strong phonon resonances within hexagonal boron nitride (hBN). more

Photo-induced superconductivity on a chip 

Researchers at the MPSD have shown that a previously demonstrated ability to turn on superconductivity with a laser beam can be integrated on a chip, opening up a route toward opto-electronic applications.  more

Cavity vacuum changes magnetic state of α-RuCl<sub>3</sub>

Researchers in Germany and the USA have produced the first theoretical demonstration that the magnetic state of an atomically thin material, α-RuCl3, can be controlled solely by placing it into an optical cavity. more

10 THz laser boosts superconductivity in K<sub>3</sub>C<sub>60</sub>

Researchers from the Cavalleri group have discovered a far more efficient way to create a previously observed metastable, superconducting-like state in K3C60 using laser light. Their work has appeared in Nature Physics. more

Lighting up electron dynamics of liquids

The mechanism by which liquids emit a particular light spectrum known as the high-harmonic spectrum is markedly different from the one in other phases of matter like gases and solids. An international research team from ETH Zurich and the MPSD reports on this distinctive process in Nature Physics. more

No universal topological signatures in HHG

An MPSD theory team reports in Physical Review X that it has found no evidence of any universal topological signatures after performing the first ab initio investigation of high harmonic generation from topological insulators.  more

Displaced electrons drive nanoparticle oscillations

Plasmons promise a variety of applications if the processes triggered by optical excitation in the nanoparticles can be controlled. A research team from Hamburg and Berlin reports in Nano Letters experimental observations that cannot be explained by established models and describes a new theoretical model that explains the dynamics of excited gold nanoparticles observed in experiments. more

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