Supersymmetric Janus solutions in four-dimensional N=3 gauged supergravity

We construct supersymmetric Janus solutions using four-dimensional N = 3 gauged supergravity with SO(3) x SU(3) gauge group. The N = 3 supersymmetric AdS(4) vacuum with unbroken SO(3) x SU(3), identified with the compactification of eleven-dimensional supergravity on AdS(4) x N-010, provides a gravity dual of supersymmetric N = 3 Chern-Simons-Matter theory in three dimensions with SU(3) flavor symmetry. The Janus solutions accordingly describe supersymmetric conformal interfaces within this Chern-Simons-Matter theory via the AdS/CFT holography. We find two classes of Janus solutions preserving respectively (2,1) and (0,1) supersymmetry on the (1 + 1)-dimensional conformal defects. The solution with (2,1) supersymmetry preserves SO(2) x SO(2) x SO(2) subset of SO(3) x SU(3) symmetry while the (0,1) supersymmetric solution is invariant under a larger SO(2) x SU(2) x SO(2) symmetry.