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Quantum Hall to Insulator Transition in the Bilayer Quantum Hall Ferromagnet
Ganpathy Murthy, Subir Sachdev
We describe a new phase transition of the bilayer quantum Hall ferromagnet at filling fraction . In the presence of static disorder (modeled by a periodic potential), bosonic…
Imaging bond order near non-magnetic impurities in square lattice antiferromagnets
Ribhu K. Kaul, Roger G. Melko, Max A. Metlitski +1
We study the textures of generalized "charge densities" (scalar objects invariant under time reversal), in the vicinity of non-magnetic impurities in square-lattice quantum anti-fe…
Edge and impurity response in two-dimensional quantum antiferromagnets
Max A. Metlitski, Subir Sachdev
Motivated by recent Monte-Carlo simulations of Hoglund and Sandvik (arXiv:0808.0408), we study edge response in square lattice quantum antiferromagnets. We use the O(3) non-linear…
Renormalization group theory of nematic ordering in d-wave superconductors
Yejin Huh, Subir Sachdev
We examine the quantum theory of the spontaneous breaking of lattice rotation symmetry in d-wave superconductors on the square lattice. This is described by a field theory of an Is…
Destruction of Neel order in the cuprates by electron-doping
Ribhu K. Kaul, Max A. Metlitski, Subir Sachdev +1
Motivated by the evidence in PCCO and NCCO of a magnetic quantum critical point at which Neel order is destroyed, we study the evolution with doping of the T=0 quantum phases of th…
Quantum critical transport in clean graphene
Lars Fritz, Joerg Schmalian, Markus Mueller +1
We describe electrical transport in ideal single-layer graphene at zero applied bias. There is a crossover from collisionless transport at frequencies larger than k_B T/hbar (T is…