  We evaluate the fermion condensate and the expectation values of the charge
and current densities for a massive fermionic field in (2+1)-dimensional
conical spacetime with a magnetic flux located at the cone apex. The
consideration is done for both irreducible representations of the Clifford
algebra. The expectation values are decomposed into the vacuum expectation
values and contributions coming from particles and antiparticles. All these
contributions are periodic functions of the magnetic flux with the period equal
to the flux quantum. Related to the non-invariance of the model under the
parity and time-reversal transformations, the fermion condensate and the charge
density have indefinite parity with respect to the change of the signs of the
magnetic flux and chemical potential. The expectation value of the radial
current density vanishes. The azimuthal current density is the same for both
the irreducible representations of the Clifford algebra. It is an odd function
of the magnetic flux and an even function of the chemical potential. The
behavior of the expectation values in various asymptotic regions of the
parameters are discussed in detail. In particular, we show that for points near
the cone apex the vacuum parts dominate. For a massless field with zero
chemical potential the fermion condensate and charge density vanish. Simple
expressions are derived for the part in the total charge induced by the planar
angle deficit and magnetic flux. Combining the results for separate irreducible
representations, we also consider the fermion condensate, charge and current
densities in parity and time-reversal symmetric models. Possible applications
to graphitic nanocones are discussed.
