Even-odd correlations in capacitance fluctuations of quantum dots

Details Even-odd correlations in capacitance fluctuations of quantum dots Even-odd correlations in capacitance fluctuations of quantum dots

1996-07-08

arxiv.org/abs/cond-mat/9607057v1

Physics

Condensed Matter

3 pages, Revtex, Without figures

Scientific paper

10.1103/PhysRevB.54.R14289

We investigate effects of short range interactions on the addition spectra of quantum dots using a disordered Hubbard model. A correlation function \cS(q) is defined on the inverse compressibility versus filling data, and computed numerically for small lattices. Two regimes of interaction strength are identified: the even/odd fluctuations regime typical of Fermi liquid ground states, and a regime of structureless $\cS(q)$ at strong interactions. We propose to understand the latter regime in terms of magnetically correlated localized spins.

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