Magnetic field evolution of the quasiparticle interference in a d-wave superconductor

Details Magnetic field evolution of the quasiparticle interference in a d-wave superconductor Magnetic field evolution of the quasiparticle interference in a d-wave superconductor

2008-02-26

arxiv.org/abs/0802.3936v2

Phys. Rev. B 78, 020509 (2008)

Physics

Condensed Matter

Superconductivity

4 pages, 2 figures; version to appear in PRB/RC

Scientific paper

10.1103/PhysRevB.78.020509

Quasiparticle interference in a d-wave superconductor with weak disorder produces distinctive peaks in the Fourier-transformed local density of states measured by scanning tunneling spectroscopy. We predict that amplitudes of these peaks can be enhanced or suppressed by applied magnetic field according to a very specific pattern governed by the symmetry of the superconducting order parameter. This calculated pattern agrees with the recent experimental measurement and suggests that the technique could be useful for probing the underlying normal state at high fields.

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