Collisional properties of ultracold K-Rb mixtures
Authors: Ferrari G., Inguscio M., Jastrzebski W., Modugno G., Roati G., Simoni A.
Autors Affiliation: European Laboratory for Nonlinear Spectroscopy and Dipartimento di Fisica, Universita di Firenze, and INFM, 50019 Sesto Fiorentino, Italy; INFM and Dipartimento di Chimica, Universita di Perugia, 06123 Perugia, Italy
Abstract: We determine the interspecies s-wave triplet scattering length a(3) for all K-Rb isotopic mixtures by measuring the elastic cross section for collisions between K-41 and Rb-87 in different temperature regimes. The positive value a(3)=+163(-12)(+57)a(0) ensures the stability against collapse of binary K-41- Rb-87 Bose-Einstein condensates. For the fermion-boson mixture K-40- Rb-87, we obtain a large and negative scattering length which implies an efficient sympathetic cooling of the fermionic species down to the degenerate regime.
Journal/Review: PHYSICAL REVIEW LETTERS
Volume: 89 (5) Pages from: 053202-1 to: 053202-4
KeyWords: cold collisions; potassium; rubudium; bec Fermi mixtures; DOI: 10.1103/PhysRevLett.89.053202Citations: 128data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2022-12-04References taken from IsiWeb of Knowledge: (subscribers only)Connecting to view paper tab on IsiWeb: Click hereConnecting to view citations from IsiWeb: Click here