  We discuss the mass gap in quantum Hall solitons (QHS) embedded in
superstring theory. In particular, we give two holographic models which are
obtained from D-brane configurations in type IIB superstring compactifications.
The first one deals with the monolayered system in the D3/D7 brane set up. The
second model corresponds to a multilayered system which is described by
intersecting D5-branes wrapping a particular set of 3-cycles. In both models,
we have shown that the mass gap is related to the filling factor.
