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Compressibility of a quantum Hall system at $ν= 1/2$

B. I. Halperin, Ady Stern

Published 1998-02-05Version 1

Despite the fact that composite fermions may be regarded as electrically neutral objects at Landua-level filling factor $\nu=1/2$, carrying only an electric dipole moment, we argue that the long-wavelength compressibility of the system is finite.

Comments: RevTeX, 2 pages, no figures. Submitted as a comment to cond-mat/9702098, by Shankar and Murthy
Categories: cond-mat.mes-hall
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