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Modulation Spectroscopy and Dynamics of Double Occupancies in a Fermionic Mott Insulator
(American Physical Society, 2009)
We calculate the rate of creation of double occupancies in a 3D Fermionic Mott insulator near half-filling by modulation of optical lattice potential. At high temperatures, incoherent holes lead to a broad response peaked ...
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. ...
Edge and Impurity Response in Two-Dimensional Quantum Antiferromagnets
(American Physical Society, 2008)
Motivated by recent Monte Carlo simulations of Höglund and Sandvik (arXiv:0808.0408), we study edge response in square lattice quantum antiferromagnets. We use the \(O(3)\) nonlinear σ model to compute the decay asymptotics ...
Collective Cyclotron Motion of the Relativistic Plasma in Graphene
(American Physical Society, 2008)
We present a theory of the finite temperature thermoelectric response functions of graphene in the hydrodynamic regime where electron-electron collisions dominate the scattering. In moderate magnetic fields, the Dirac ...
Dynamics and Transport of the \(Z_2\) Spin Liquid: Application to \(\kappa-(ET)_2Cu_2(CN)_3\)
(American Physical Society, 2009)
We describe neutron scattering, NMR relaxation, and thermal transport properties of \(Z_2\) spin liquids in two dimensions. Comparison to recent experiments on the spin \(S=\frac{1}{2}\) triangular lattice antiferromagnet ...
Signatures of the Nematic Ordering Transitions in the Thermal Conductivity of D-wave Superconductors
(American Physical Society, 2009)
We study experimental signatures of the Ising nematic quantum phase transition in d-wave superconductors, associated with the change of lattice symmetry from tetragonal to orthorhombic in the superconducting state. The ...
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 ...
Fluctuating Spin Density Waves in Metals
(American Physical Society, 2009)
Recent work has used a U(1) gauge theory to describe the physics of Fermi pockets in the presence of fluctuating spin density wave order. We generalize this theory to an arbitrary band structure and ordering wavevector. ...