Phase transitions in Josephson-junction ladders in a magnetic field.

@article{Granato1990PhaseTI,
  title={Phase transitions in Josephson-junction ladders in a magnetic field.},
  author={Granato},
  journal={Physical review. B, Condensed matter},
  year={1990},
  volume={42 7},
  pages={
          4797-4799
        }
}
  • Granato
  • Published 1 September 1990
  • Physics
  • Physical review. B, Condensed matter
A model of a Josephson-junction ladder in a perpendicular magnetic field with {ital f}{sub 0}={ital p}/{ital q} flux quanta per plaquette is considered. It is shown that the topological features of the zero-temperature phase diagram, as a function of charging energy and small deviations {ital f}{minus}{ital f}{sub 0} from commensurability of the vortex lattice, are strongly dependent on {ital q}. In addition to a superconductor-insulator transition, a commensurate-incommensurate transition is… 
Quantum Critical Phenomena in Ladders of Josephson Junctions in a Magnetic Field
A model of a ladder of Josephson junctions in a magnetic field is considered. The topological features of the zero-temperature phase diagram, as a function of charging energy and small deviations
Phase transitions in the one‐dimensional frustrated quantum XY model and Josephson‐junction ladders
A one‐dimensional quantum version of the frustrated XY (planar rotor) model is considered which can be physically realized as a ladder of Josephson junctions at half a flux quantum per plaquette.
Ground states of a Bose–Hubbard ladder in an artificial magnetic field: field-theoretical approach
We consider a Bose–Hubbard ladder subject to an artificial magnetic flux and discuss its different ground states, their physical properties, and the quantum phase transitions between them. A
A conformal field theory description of magnetic flux fractionalization in Josephson junction ladders
Abstract.We show how the recently proposed effective theory for a Quantum Hall system at “paired states” filling ν=1 [1,2], the twisted model (TM), well adapts to describe the phenomenology of
Quantum phases of strongly interacting bosons on a two-leg Haldane ladder
We study the ground-state physics of a single-component Haldane model on a hexagonal two-leg ladder geometry with a particular focus on strongly interacting bosonic particles. We concentrate our
Capacitively coupled Josephson-junction chains: straight versus slanted coupling
We investigate analytically the quantum phase transition in a system of two chains of ultrasmall Josephson junctions, coupled capacitively with each other. Two different schemes of the coupling,
Universal Hall Response in Interacting Quantum Systems.
TLDR
Focusing on SU(M) symmetric interacting bosons and fermions, this work identifies an extensive regime in which the Hall imbalance Δ_{H} is universal and corresponds to a classical Hall resistivity R{H}=-1/n for a large class of quantum phases.
Meissner to vortex phase transition in a two-leg ladder in artificial gauge field
We consider a two-leg boson ladder in artificial gauge field with hard-core intraleg and negligible interleg interactions. Using numerical simulations based on the Density Matrix Renormalization
...
1
2
3
...