Innovating Works

OrbiDynaMIQs

Financiado
Two orbital quantum many body systems from Kondo dynamics to mediated interacti...
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... 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, I will realize a versatile two-orbital quantum simulator based on ultracold fermionic ytterbium atoms. I will focus on the spin-orbital dynamics of single and multiple localized impurities embedded in one- and two-dimensional itinerant fermion systems. I will then investigate the emergence of RKKY interactions between localized spins, both in few-body and full lattice realizations, taking first steps in exploring a whole new range of spin-correlation phenomena in Kondo systems. The proposed approach capitalizes on the strong interlink between quantum many-body physics and precision measurements with two-electron atoms, and on my experience at the confluence of these fields. It will also facilitate studies of new two-orbital models with enlarged SU(N) symmetries beyond that of spin-1/2 electron systems. ver más
30/04/2026
UNITS
1M€
Duración del proyecto: 65 meses Fecha Inicio: 2020-11-13
Fecha Fin: 2026-04-30

Línea de financiación: concedida

El organismo H2020 notifico la concesión del proyecto el día 2020-11-13
Línea de financiación objetivo El proyecto se financió a través de la siguiente ayuda:
ERC-2020-STG: ERC STARTING GRANTS
Cerrada hace 5 años
Presupuesto El presupuesto total del proyecto asciende a 1M€
Líder del proyecto
UNIVERSITA DEGLI STUDI DI TRIESTE No se ha especificado una descripción o un objeto social para esta compañía.
Perfil tecnológico TRL 4-5