Demler, EugeneKim, EugeneSarma, S. Das2016-08-312000Demler, Eugene, Eugene H. Kim, and S. Das Sarma. 2000. “Spin Symmetry Breaking in Bilayer Quantum Hall Systems.” Physical Review B 61 (16) (April 15): R10567–R10570. doi:10.1103/physrevb.61.r10567.1098-0121http://nrs.harvard.edu/urn-3:HUL.InstRepos:28237457Based on the construction of generalized Halperin wave functions, we predict the possible existence of a large class of broken spin symmetry states in bilayer quantum Hall structures, generalizing the recently suggested canted antiferromgnetic phase to many fractional fillings. We develop the appropriate Chern-Simons theory, and establish explicitly that the low-lying neutral excitation is a Goldstone mode and that the charged excitations are bimerons with continuously tunable through the canted antiferromagnetic order parameter electric charge on the individual merons.en-USJournal Article2016-08-3110.1103/PhysRevB.61.R10567