  This Letter presents a search for high-mass resonances decaying into tau+tau-
final states using proton-proton collisions at sqrt(s) = 7 TeV produced by the
Large Hadron Collider. The data were recorded with the ATLAS detector and
correspond to an integrated luminosity of 4.6 inverse femtobarns. No
statistically significant excess above the Standard Model expectation is
observed; 95% credibility upper limits are set on the cross section times
branching fraction of Z' resonances decaying into tau+tau- pairs as a function
of the resonance mass. As a result, Z' bosons of the Sequential Standard Model
with masses less than 1.40 TeV are excluded at 95% credibility.
