Top quark property measurements with the ATLAS detector and probing for new physics

The top quark is the heaviest known fundamental particle and probing its couplings with the other fundamental particle may open a window to physics beyond the Standard Model. Measurements of the charge asymmetry in top quark pair events are presented. The charge asymmetry is expected to be small in the Standard Model, but can be enhanced by the presence of new physics. The measurements use the 2012 ATLAS dataset and include a measurement using specialized algorithms to select high transverse momentum top quarks. Searches for flavour changing neutral current top quark decays using the full 2012 ATLAS dataset are presented. The searches target the exotic top quark decays t->Zq and t->Hq, and in the case of the Higgs boson exploit multiple different Higgs boson decay modes. Single top quark events are used to probe for anomalous couplings between the top quark and the light quarks and gluons. In addition, a new measurement using the 2011 ATLAS dataset is presented, where measurements of the different decay rates in single top quark events are used to set limits on potential anomalous couplings at the Wtb vertex.