Spin-triplet superconductivity with line nodes in Sr2RuO4

Several possible odd-parity states are listed group-theoretically and examined in light of recent experiments on Sr2RuO4. These include some of tie f-wave pairing states, d(k) proportional to (z) over cap k(x)k(y)(k(x) + ik(y)) and (z) over cap(k(x)(2) - k(y)(2))(k(x) + ik(y)) and other (z) over cap(k(x) + ik(y)) cos ck(z) (c is the c-axis lattice constant) as the most plausible candidates. These are time-reversal symmetry-broken states and have line nodes running either vertically (the former two) or horizontally (the latter.), consistent with experimental results. Characterizations of these states and other possibilities are given.