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Algebraic Charge Liquids
(Nature Publishing Group, 2008)
High temperature superconductivity emerges in the cuprate compounds upon changing the electron density of an insulator in which the electron spins are antiferromagnetically ordered. A key characteristic of the superconductor ...
Universal Thermal and Electrical Transport Near the Superconductor-Metal Quantum Phase Transition in Nanowires
(American Physical Society, 2008)
We describe the thermal (\(\kappa\)) and electrical (\(\sigma\)) conductivities of quasi-one-dimensional wires, across a quantum phase transition from a superconductor to a metal induced by pair-breaking perturbations. ...
Superfluid-insulator Transition in Fermi-Bose Mixtures and the Orthogonality Catastrophe
(The American Physical Society, 2008)
The superfluid-insulator transition of bosons is strongly modified by the presence of Fermions. Through an imaginary-time path integral approach, we derive the self-consistent mean-field transition line, and account for ...
Theory of the Nodal Nematic Quantum Phase Transition in Superconductors
(American Physical Society, 2008)
We study the character of an Ising nematic quantum phase transition deep inside a \(d\)-wave superconducting state with nodal quasiparticles in a two-dimensional tetragonal crystal. We find that, within a \(1∕N\) expansion, ...
Valence Bond Solid Order Near Impurities in Two-Dimensional Quantum Antiferromagnets
(American Physical Society, 2008)
Recent scanning tunneling microscopy (STM) experiments on underdoped cuprates have displayed modulations in the local electronic density of states, which are centered on a Cu-O-Cu bond [Kohsaka et al. Science 315 1380 ...
Quantum Critical Transport in Clean Graphene
(American Physical Society, 2008)
We describe electrical transport in ideal single-layer graphene at zero applied gate voltage. There is a crossover from collisionless transport at frequencies larger than \((k_{B}T/\hbar\) (\(T\) is the temperature) to ...
Insulator-Metal Transition on the Triangular Lattice
(American Physical Society, 2008)
Mott insulators with a half-filled band of electrons on the triangular lattice have been recently studied in a variety of organic compounds. All of these compounds undergo transitions to metallic and/or superconducting ...
Renormalization Group Theory of Nematic Ordering in \(d\)-Wave Superconductors
(American Physical Society, 2008)
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 Ising nematic order parameter coupled ...