Single top quark production cross-section and properties using the ATLAS detector at the LHC

ATLAS measurements of single top-quark processes are summarized. Measurements using data at 7 and 8 TeV collisions from the LHC are presented. The measurements are performed using the semi-leptonic decay mode of the top-quark. Production cross-sections and the $\left|V_{tb}\right|$ CKM matrix element extraction are shown. All measurements are compared to theoretical calculations. In addition, the $s$-channel production mode is explored along with limits on exotic production modes.