  The Hartree-Fock paradigm of bilayer quantum Hall states with finite
tunneling at filling factor $\nu$=1 has full pseudospin ferromagnetic order
with all the electrons in the lowest symmetric Landau level. Inelastic light
scattering measurements of low energy spin excitations reveal major departures
from the paradigm at relatively large tunneling gaps. The results indicate the
emergence of a novel correlated quantum Hall state at $\nu$=1 characterized by
reduced pseudospin order. Marked anomalies occur in spin excitations when
pseudospin polarization collapses by application of in-plane magnetic fields.

Mesoscale and Nanoscale Physics;Strongly Correlated Electrons