Properties of the Soliton-Lattice State in Double-Layer Quantum Hall   Systems
  Application of a sufficiently strong parallel magnetic field $B_\parallel > B_{c}$ produces a soliton-lattice (SL) ground state in a double-layer quantum Hall system. We calculate the ground-state properties of the SL state as a function of $B_\parallel$ for total filling factor $\nu_{T}=1$, and obtain the total energy, anisotropic SL stiffness, Kosterlitz-Thouless melting temperature, and SL magnetization. The SL magnetization might be experimentally measurable, and the magnetic susceptibility diverges as $|B_\parallel - B_{c}|^{-1}$. 
C. B. Hanna (1), A. H. MacDonald (2), S. M. Girvin (2) ((1) Boise   State University, (2) Indiana University)