  We investigate Aharonov-Bohm-type oscillations of the thermopower of a
quantum dot embedded in a ring for the case when the interaction between
electrons can be neglected. The thermopower is shown to be strongly flux
dependent, and typically the amplitude of oscillations exceeds the background
value. It is also shown to be essentially dependent on the phase of the
scattering matrix which is determined by the experimental geometry and is not
known in the given experiment. Two procedures to compare theory and experiment
are proposed.

Condensed Matter