Boundary Effects in (2+1)-Dimensional Maxwell–Chern–Simons Theory

Abstract

The effects of the sample's boundaries in the magnetic response of the charged anyon fluid at finite temperature are investigated. For the case of an infinite-strip sample it is shown that the Meissner effect takes place at temperatures lower than the fermion energy gap ωc. The temperature dependence of the corresponding effective penetration depth is determined. At temperatures much larger than the scale ωc, a different phase is found, in which the external magnetic field penetrates the fluid.