Unbalanced droplets of one-dimensional mixtures of fermions Gordillo, María Carmen We acknowledge financial support from the Ministerio de Ciencia e Innovación MCIN/AEI/10.13039/501100011033 (Spain) under Grant No. PID2020-113565GB-C22 and from the Junta de Andalucía Group PAIDI-205. We also acknowledge the use of the C3UPO computer facilities at the Universidad Pablo de Olavide. By means of a diffusion Monte Carlo technique, we study one-dimensional unbalanced mixtures of fermionic Ytterbium atoms (173Yb, 171 Yb). This means clusters in which the total number of 173Yb particles is different from the sum of all the atoms belonging to the 171 Yb isotope. Our aim will be to check the possibility of having self-bound arrangements beyond the balanced compositions reported in previous literature rather than exploring all the situations in which that could be possible. In that vein, we focused mainly on mixtures in which the atoms belonging to one isotope are spin-polarized, while the spins of the particles in the other isotope are evenly distributed in two sets. What we found was that, even tough self-bound droplets are possible for different compositions, the most stable ones are clusters with a slight excess of attractively interacting 171Yb particles with different spins with respect to the number of spin-polarized 173 Yb atoms. Clusters in which the number of repulsively interacting unequal-spin 173Yb atoms are in excess with respect to the spin-polarized 171Yb particles have a very narrow stability range. 2025-04-07T07:44:27Z 2025-04-07T07:44:27Z 2024-11-26 journal article Published version: Gordillo, María Carmen. Unbalanced droplets of one-dimensional mixtures of fermions. Phys. Rev. A 111, 023321 – Published 18 February, 2025. https://doi.org/10.1103/PhysRevA.111.023321 https://hdl.handle.net/10481/103478 10.1103/PhysRevA.111.023321 eng http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 Internacional American Physical Society