  The results of a search for pair production of the scalar partners of bottom
quarks in 2.05 fb^-1 of pp collisions at sqrt{s} = 7 TeV using the ATLAS
experiment are reported. Scalar bottoms are searched for in events with large
missing transverse momentum and two jets in the final state, where both jets
are identified as originating from a b-quark. In an R-parity conserving minimal
supersymmetric scenario, assuming that the scalar bottom decays exclusively
into a bottom quark and a neutralino, 95% confidence-level upper limits are
obtained in the tilde{b}_1 - tilde{chi}^0_1 mass plane such that for neutralino
masses below 60 GeV scalar bottom masses up to 390 GeV are excluded.
