Magnetic field induced charge and spin instabilities in cuprate superconductors

Details Magnetic field induced charge and spin instabilities in cuprate superconductors Magnetic field induced charge and spin instabilities in cuprate superconductors

2002-03-11

arxiv.org/abs/cond-mat/0203219v2

PRL 88, 257005 (2002)

Physics

Condensed Matter

Superconductivity

4 pages REVTeX + 2 PostScript figures included in text. Version to appear in PRL (minor stylistic changes, references updated)

Scientific paper

10.1103/PhysRevLett.88.257005

A d-wave superconductor, subject to strong phase fluctuations, is known to suffer an antiferromagnetic instability closely related to the chiral symmetry breaking in (2+1)-dimensional quantum electrodynamics (QED3). On the basis of this idea we formulate a "QED3 in a box" theory of local instabilities of a d-wave superconductor in the vicinity of a single pinned vortex undergoing quantum fluctuations around its equilibrium position. As a generic outcome we find an incommensurate 2D spin density wave forming in the neighborhood of a vortex with a concomitant "checkerboard" pattern in the local electronic density of states, in agreement with recent neutron scattering and tunneling spectroscopy measurements.

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