Cold Fermionic Atoms in Two-Dimensional Traps: Pairing versus Hund’s Rule

2008/06/30 by Massimo Rontani, M. Rontani, J. R. Armstrong +5
Computer Science · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Quantum Information and Cryptography #Quantum, superfluid, helium dynamics #cond-mat.mes-hall #cond-mat.other

paper · pdf · doi:10.1103/physrevlett.102.060401

published as Physical Review Letters 102, 060401 (2009) · RevTeX 4.0, 4 pages, 5 colour postscript figures

openalex publication_date 2009/02/09 · arxiv created 2009/02/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The microscopic properties of few interacting cold fermionic atoms confined in a two-dimensional (2D) harmonic trap are studied by numerical diagonalization. For repulsive interactions, a strong shell structure dominates, with Hund's rule acting at its extreme for the midshell configurations. In the attractive case, odd-even oscillations due to pairing occur simultaneously with deformations in the internal structure of the ground states, as seen from pair correlation functions.

Citations

• Electronic structure of quantum dots
• Full configuration interaction approach to the few-electron problem in artificial atoms
• Bose-Einstein Condensation of Molecules
• Observation of Bose-Einstein Condensation of Molecules