## CMT135

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**
Charge Dynamics of Vortex Cores in Layered Chiral Triplet Superconductors
**

**Author(s):**
M. Eschrig and J. A. Sauls
- Address: Department of Physics & Astronomy, Northwestern University, Evanston, IL 60208
- Date: April 11, 2009
**Journal:**
New J. Phys. 11 075009 (2009)
[DOI]
[PDF]
**Abstract:**
In an accompanying paper [arXiv:0903.0011v1] we have studied the equilibrium properties of vortices
in a chiral quasi-twodimensional triplet superfluid/superconductor. Here we extend our studies to
include the dynamical response of a vortex core in a chiral triplet superconductor to an external
a.c. electromagnetic field. We consider in particular the response of a doubly quantized vortex with
a homogeneous core in the time-reversed phase. The external frequencies are assumed to be comparable
in magnitude to the superconducting gap frequency, such that the vortex motion is non-stationary but
can be treated by linear response theory. We include broadening of the vortex core bound states due
to impurity scattering and consider the intermediate clean regime, with a broadening comparable to
or larger than the quantized energy level spacing. The response of the order parameter, impurity
self energy, induced fields and currents are obtained by a self-consistent calculation of the
distribution functions and the excitation spectrum. Using these results we obtain the self-consistent
dynamically induced charge distribution in the vicinity of the core. This charge density is related
to the nonequilibrium response of the bound states and order parameter collective mode, and dominates
the electromagnetic response of the vortex core.

- Comment: 22 pages, 3 figures

**Eprint:**
[PDF]
[arXiv]