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Observation of Cs nS and nD state ultralong-range Rydberg molecules

April 25, 2019 - 11:00am
Jin Yang
University of Oklahoma

Ultralong-range Rydberg molecules have been an active and attractive research area for more than one decade. These novel molecules are formed by a new binding mechanism – scattering processes between Rydberg electrons and ground state atoms. The scattering process can be described by a Fermi pseudopotential, which gives good agreement with experimental observations so far. The most striking feature of Rydberg molecules are their counterintuitive characteristics – they are the only known homonuclear diatomic molecules which possess large permanent dipole moments. Up to now, various atomic species (Rb, Cs, Sr) have been investigated to explore the properties of ultralong-range Rydberg molecules. Over the last several years, with their large size ~100 nm, Rydberg molecules have been recognized as excellent candidates for exploring many-body physics and few-body physics. In this presentation, I describe our recent progress on observing Cs nS and nD states Rydberg molecules. I will present our work on the first observation and measurements of the most prominent property, giant permanent dipole moments ~kDebye.   From this description, I will introduce the influence of spin-dependent relativistic effects on scattering processes and the few-body physics of nD Rydberg molecules, including a new class of anisotropic molecule. Many fascinating properties due to the scattering process, and more significantly due to the subtle characteristics of Cesium atoms will be presented

PSC 2136