Stable hc/e vortices in a gauge theory of superconductivity in strongly correlated systems
Subir Sachdev
DOI 10.1103/PhysRevB.45.389 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
A phenomenological model F of the superconducting phase of electronic systems with strong short-range repulsive interactions is studied. Fluctuations of the connection a of an internal U(1) gauge symmetry suppress local charge fluctuations. Above Hc1, magnetic flux can pierce the superconductor in vortices with flux hc/2e throughout the superconducting phase, but regimes are found in which the lowest-energy configuration has vortices with flux hc/e. Experiments by Little and Parks and others, which examine periodicities as a function of a varying magnetic field, always observe a period in external flux of hc/2e. The low-energy properties of a symplectic large-N expansion of a model of the CuO2 layers of the cuprate superconductors are shown to be well described by F. This analysis and some normal-state properties of the cuprates suggest that hc/e vortices should be stable at the lowest dopings away from the insulating state at which superconductivity first occurs, unless the superconductor-normal transition is strongly first order.
Similar papers
Vortex dynamics in superconducting channels with periodic constrictions
similarity 0.91K. Yu et al.
Source status unknown — claims are unverified
Microscopic oscillations in the quantum nucleation of vortices subject to periodic pinning potential in a thin superconductor
similarity 0.90Roberto Iengo & Giancarlo Jug
Source status unknown — claims are unverified
Spin and charge order in the vortex lattice of the cuprates: experiment and theory
similarity 0.89Subir Sachdev · 2002 · arXiv:cond-mat/0203363
Source status unknown — claims are unverified
Possible vortex splitting in high-temperature cuprate superconductors
similarity 0.89Richard Hlubina
Source status unknown — claims are unverified
Weak-coupling theory of high-temperature superconductivity in the antiferromagnetically correlated copper oxides
similarity 0.88P. Monthoux et al.
Source status unknown — claims are unverified
Dynamic vortex phases and pinning in superconductors with twin boundaries
similarity 0.88C. Reichhardt et al.
Source status unknown — claims are unverified