Two-orbital quantum many-body systems: from Kondo dynamics to mediated interactions - OrbiDynaMIQs (DFM.AD002.134)
Thematic area
Physical sciences and technologies of matter
Project area
Scienze e tecnologie quantistiche (DFM.AD002)Structure responsible for the research project
National Institute of Optics (INO)
Project manager
GIACOMO ROATI
Phone number: 0554572473
Email: giacomo.roati@ino.cnr.it
Abstract
The interaction between localized spins and mobile fermions underlies the transport properties of a large variety of highly correlated materials. Even a single localized spin impurity can dramatically influence the motion of many fermions in its surroundings, giving rise to one of the most remarkable phenomena in quantum many-body physics - the Kondo effect. For a finite density of localized spins, the Kondo effect competes with non-local fermion-mediated Ruderman-Kittel-Kasuya-Yosida (RKKY) interactions, providing the driving force for many intriguing phenomena such as the unconventional superconductivity and the quantum critical behavior of heavy-fermion compounds. Despite decades of investigations, fundamental issues remain concerning the dynamical and spatial properties of the Kondo effect, that are difficult to tackle in electron systems. Further, a detailed understanding of the transition between the single-impurity Kondo problem and a system of interacting impurities is still missing. In OrbiDynaMIQs, I will develop a novel experimental platform for addressing such open questions. Leveraging on recent progress in manipulating single atoms with optical tweezers.
Goals
xxx
Start date of activity
01/05/2021
Keywords
Quantum dynamics, Kondo physics
Last update: 22/04/2025