# Quantum Hall to Insulator Transition in the Bilayer Quantum Hall Ferromagnet

 Title: Quantum Hall to Insulator Transition in the Bilayer Quantum Hall Ferromagnet Author: Murthy, Ganpathy; Sachdev, Subir Note: Order does not necessarily reflect citation order of authors. Citation: Murthy, Ganpathy, and Subir Sachdev. 2008. Quantum hall to insulator transition in the bilayer quantum hall ferromagnet. Physical Review Letters 101(22): 226801. Full Text & Related Files: 0808.3702v1.pdf (133.3Kb; PDF) Abstract: We describe a phase transition of the bilayer quantum Hall ferromagnet at $$\nu=1$$. In the presence of static disorder (modeled by a periodic potential), bosonic $$S=\frac{1}{2}$$ spinons undergo a superfluid-insulator transition while preserving ferromagnetism. The Mott insulating phase has an emergent $$U(1)$$ photon, and the transition is between Higgs and Coulomb phases of this photon. Consequences for charge and counterflow conductivity and for interlayer tunneling conductance are discussed. Published Version: doi:10.1103/PhysRevLett.101.226801 Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:7522128

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