Based on our previous work the de Haas-van Alphen effect in two-dimensional
QED at finite temperature and density is investigated. It is shown that th
is effect is demonstrated not only through magnetization oscillations, but
also through chemical potential oscillations. Contrary to earlier work [And
ersen and Haugset, Phys. Rev. D 51 (1995) 3073], the magnetization oscillat
ion we studied has a correct non-relativistic limit at zero temperature and
low particle densities. (C) 2000 Published by Elsevier Science B.V. PACS:
05.30.-d; 11.10.Wx; 12.20.Ds.