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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…