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arXiv:cond-mat/0006294 · Physical review. B, Condensed matter

Canted ground state in artificial molecules at high magnetic fields

Luis Martín-Moreno, Luis Brey, C. Tejedor

Published Oct 15, 2000• 21 citations
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Abstract

We analyze the transitions that a magnetic field provokes in the ground state of an artificial homonuclear diatomic molecule. For that purpose, we have performed numerical diagonalizations for a double quantum dot around the regime of filling factor two. We present phase diagrams in terms of tunneling and Zeeman couplings, and confinement strength. We identify a series of transitions from ferromagnetic to symmetric states through a set of canted states with antiferromagnetic coupling between the two quantum dots.

DOI
10.1103/physrevb.62.r10633

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