Two-component theory of a droplet of electrons in half-filled Landau level

Details Two-component theory of a droplet of electrons in half-filled Landau level Two-component theory of a droplet of electrons in half-filled Landau level

1999-03-31

arxiv.org/abs/cond-mat/9903442v1

Physics

Condensed Matter

Figure1 is available from the authors upon request. Three eps files are attached to the tex file

Scientific paper

10.1142/S0217979200000558

We have investigated low energy excitations of a disk of electrons in half-filled Landau level using trail wave function and small-size exact diagonalization approaches. We have constructed a set of many-body basis states that describe correctly the low energy excitations. In this theory a droplet consists of two types of composite fermion liquids, and suggests that a droplet can support an edge magnetoplasmon and low energy droplet excitations. A possibility of measuring these excitations in a quantum dot is discussed.

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