Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2004-10-04
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
4 pages, 3 postscript figure
Scientific paper
10.1103/PhysRevLett.94.076803
Using a combination of heat pulse and nuclear magnetic resonance techniques we demonstrate that the phase boundary separating the interlayer phase coherent quantum Hall effect at $\nu_T = 1$ in bilayer electron gases from the weakly coupled compressible phase depends upon the spin polarization of the nuclei in the host semiconductor crystal. Our results strongly suggest that, contrary to the usual assumption, the transition is attended by a change in the electronic spin polarization.
Eisenstein James P.
Pfeiffer Loren N.
Spielman Ian B.
Tracy Lisa A.
West Ken. W.
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