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Conductance of an Artificial Atom in Strong Magnetic Fields

1994/07/06 by O. Klein, Klein, O., C. de C. Chamon +14
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Condensed Matter (cond-mat) #FOS: Physical sciences #Quantum and electron transport phenomena #Quantum, superfluid, helium dynamics #cond-mat

paper · pdf · doi:10.48550/arxiv.cond-mat/9407035

10 pages-RevTeX, 4 Figs. available u. request; MIT-Kastner-SET/9407

arxiv created 1994/07/06 · openalex publication_date 1994/07/06 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The conductance resulting from resonant tunneling through a droplet of N ∼ 30 electrons is used to measure its chemical potential μN. Abrupt shifts of μN occur at sharply defined values of the magnetic field, at which the state of the droplet changes. These are used to study part of the phase-diagram of the droplet in strong magnetic fields; we find evidence for a new phase in the spin polarized regime. We make a detailed comparison between theory and experiment: Hartree-Fock provides a quantitative description of the measurements when both spin-split states of the lowest orbital Landau level are occupied and a qualitative one in the spin polarized regime.

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