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JOŽEF STEFAN INSTITUTE
Department of Complex Matter
Jamova cesta 39, 1000 Ljubljana, Slovenia

Dynamics of Quantum matter

We explore non-equilibrium many-body dynamics in quantum systems that experience symmetry-breaking, topological, or jamming transitions. These systems encompass superconductors, charge-density wave, and magnetic materials.

Experimental Soft Matter Physics

The research is conducted within the “Light and Matter” research program. The interaction of light with matter is one of the most important fields of physics and optical processes are indispensable in many branches of modern industry.

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February 6, 2024
The absence of efficient light modulators for extreme ultraviolet - EUV and X-ray photons considerably limits their real-life application, particularly when even slight complexity of the beam patterns is required. In ...

Home / News / Crystallization of polarons through charge and spin ordering transitions in 1T-T…

Crystallization of polarons through charge and spin ordering transitions in 1T-TaS₂ published in Nat. Comm.

November 3, 2023

Physicists from the Jožef Stefan Institute and Brookhaven National Laboratory (USA) describe an experiment, which for the first time reports the existence of individual polarons at very high temperatures in a crystal of TaS₂. They are able to detect the displacements of ions surrounding individual electrons as they move around in the crystal at very high temperatures on ultrashort timescales of 10⁻¹² seconds. Furthermore, as the temperature is reduced, they are able to follow their condensation into polaronic crystal states which retain the signature of individual polarons. At low temperatures, the resulting state is superconducting, but forms a quantum spin liquid at intermediate temperatures, whose signature is identified by symmetry of the polaronic lattice displacements. The work has wide implication in many areas of physics, while the pioneering method opens the way to the search of polarons in other important materials. The present material is known for its very interesting properties reported in numerous recent Science and Nature articles. The work was published in Nature Communications.

You can read the article here: https://www.nature.com/articles/s41467-023-42631-6