  This paper presents a search for the t-channel exchange of an R-parity
violating scalar top quark (\={t}) in the emu continuum using 2.1/fb of data
collected by the ATLAS detector in sqrt(s) = 7 TeV pp collisions at the Large
Hadron Collider. Data are found to be consistent with the expectation from the
Standard Model backgrounds. Limits on R-parity-violating couplings at 95% C.L.
are calculated as a function of the scalar top mass (m_{\={t}}). The upper
limits on the production cross section for pp->emuX, through the t-channel
exchange of a scalar top quark, ranges from 170 fb for m_{\={t}}=95 GeV to 30
fb for m_{\={t}}=1000 GeV.
