Structure of the core of magnetic vortices in d-wave superconductors with a subdominant triplet pairing mechanism

Mikael Fogelström

doi:10.1103/PhysRevB.84.064530

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Structure of the core of magnetic vortices in d-wave superconductors with a subdominant triplet pairing mechanism

Mikael Fogelström

DOI 10.1103/PhysRevB.84.064530 · Physical Review B

T1

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Abstract

The quasiparticle states found in the vortex core of a high-Tc cuprate superconductor may be probed by scanning tunneling spectroscopy. Results of such experiments have revealed typical spectra that are quite different from what is seen in conventional low-Tc superconductors. In particular, the Caroli-de Gennes-Matricon state at E∼0 in the core center is not seen. Instead, in a high-Tc vortex core, quasiparticle states are found at energies that are at a sizable fraction of the gap energy. One explanation for this could be that a finite amplitude of a competing order parameter stabilizes in the vortex-core center. Here I will explore the possibility of nucleating a vortex-core state that locally breaks inversion symmetry. The vortex-core order parameter is of mixed parity, a [d+ip] wave, and the quasiparticle spectra in the core center lacks the E=0 states.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown