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

Abstract

The quasiparticle states found in the vortex core of a high-T${}_{\mathrm{c}}$ 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-deGennes-Matricon state at $E\sim 0$ in the core center is not seen. Instead, in a high-T${}_{\mathrm{c}}$ 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 orderparameter 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 orderparameter is of mixed parity, a $[d+ip]$-wave, and the quasiparticle spectra in the core center lacks the E=0 states.

6 pages, 5 figures, accepted for publication as a regular article in Physical Review B

References in corpus (7)

• Scanning tunneling spectroscopy of high-temperature superconductors
• The effect of collective spin-1 excitations on electronic spectra in high-Tc superconductors
• Vortices in chiral, spin-triplet superconductors and superfluids
• Four-fold structure of vortex core states in Bi2Sr2CaCu2O8 (Bi2212)
• Cooper Pairs with Broken Parity and Time-Reversal Symmetries in D-wave Superconductors
• Cooper Pairs with Broken Time-Reversal, Parity, and Spin-Rotational Symmetries in Singlet Type-II Superconductors
• Triplet pairing and upper critical field in the mixed state of d-wave superconductors

Cited by in corpus (8)

• Observation of Caroli-de Gennes-Matricon Vortex States in YBa${}_2$Cu${}_3$O${}_{7-\delta }$
• Revisiting the vortex-core tunnelling spectroscopy in YBa${}_2$Cu${}_3$O${}_{7-\delta }$
• Model evidence of a superconducting state with a full energy gap in small cuprate islands
• Probing vortex Majorana fermions and topology in semiconductor-superconductor heterostructures
• Coreless vortices as direct signature of chiral $d$-wave superconductivity
• Chiral d-wave superconducting state in the core of a doubly quantized s-wave vortex in graphene
• Vortex-core spectroscopy of $d$-wave cuprate high-temperature superconductors
• Bogoliubov quasiparticles coupled to the antiferromagnetic spin mode in a vortex core