Analytical Result on Electronic States around a Vortex Core in a Noncentrosymmetric Superconductor

Details Analytical Result on Electronic States around a Vortex Core in a Noncentrosymmetric Superconductor Analytical Result on Electronic States around a Vortex Core in a Noncentrosymmetric Superconductor

2006-02-10

arxiv.org/abs/cond-mat/0602254v2

J. Phys. Soc. Jpn 75, 043706 (2006)

Physics

Condensed Matter

Superconductivity

4 pages,3 figures

Scientific paper

10.1143/JPSJ.75.043706

We analytically study electronic bound states around a single vortex core in a noncentrosymmetric superconductor such as ${\rm CePt_3Si}$ without mirror symmetry about the $ab$ plane. Considering a mixed spin-singlet-triplet Cooper pairing model, we obtain a formula about the local density of states (LDOS) around a vortex core in any directions of magnetic fields. The LDOS under a magnetic field perpendicular to the c axis are quite different from those of typical s-wave or d-wave superconductors. From the ellipticity of the spatial pattern of the LDOS around a vortex core, one can estimate experimentally the pairing symmetry of ${\rm CePt_3Si}$ such as the position of the gap nodes and the ratio of the singlet component to the triplet component in order parameter.

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