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Theory of the algebraic vortex liquid in an anisotropic spin-1/2 triangular antiferromagnet
Jason Alicea, Olexei I. Motrunich, Matthew P. A. Fisher
We explore spin-1/2 triangular antiferromagnets with both easy-plane and lattice exchange anisotropies by employing a dual vortex mapping followed by a fermionization of the vortic…
Exotic quantum phases and phase transitions in correlated matter
Fabien Alet, Aleksandra M. Walczak, Matthew P. A. Fisher
We present a pedagogical overview of recent theoretical work on unconventional quantum phases and quantum phase transitions in condensed matter systems. Strong correlations between…
Universal point contact resistance between thin-film superconductors
Michael Hermele, Gil Refael, Matthew P. A. Fisher +1
A system comprising two superconducting thin films connected by a point contact is considered. The contact resistance is calculated as a function of temperature and film geometry,…
Algebraic vortex liquid in spin-1/2 triangular antiferromagnets: Scenario for Cs_2CuCl_4
Jason Alicea, Olexei I. Motrunich, Matthew P. A. Fisher
Motivated by inelastic neutron scattering data on Cs_2CuCl_4, we explore spin-1/2 triangular lattice antiferromagnets with both spatial and easy-plane exchange anisotropies, the la…
Fate of the Josephson effect in thin-film superconductors
Michael Hermele, Gil Refael, Matthew P. A. Fisher +1
The dc Josephson effect refers to the dissipationless electrical current -- the supercurrent -- that can be sustained across a weak link connecting two bulk superconductors. This e…
Vortices and quasiparticles near the "superconductor-insulator" transition in thin films
Victor Galitski, G. Refael, Matthew P. A. Fisher +1
We study the low temperature behavior of an amorphous superconducting film driven normal by a perpendicular magnetic field (B). For this purpose we introduce a new two-fluid formul…
Atomic quantum simulator for lattice gauge theories and ring exchange models
H. P. Büchler, M. Hermele, S. D. Huber +2
We present the design of a ring exchange interaction in cold atomic gases subjected to an optical lattice using well understood tools for manipulating and controlling such gases. T…
Criticality in quantum triangular antiferromagnets via fermionized vortices
Jason Alicea, Olexei I. Motrunich, Michael Hermele +1
We revisit two-dimensional frustrated quantum magnetism from a new perspective, with the aim of exploring new critical points and critical phases. We study easy-plane triangular an…
Algebraic spin liquid as the mother of many competing orders
Michael Hermele, T. Senthil, Matthew P. A. Fisher
We study the properties of a class of two-dimensional interacting critical states -- dubbed algebraic spin liquids -- that can arise in two-dimensional quantum magnets. A particula…