Investigations of the Core Structure of Magnetic Vortices in Type-II Superconductors by muSR

Abstract

Muon spin rotation (muSR) has emerged as the leading experimental probe of the effective size of magnetic vortices in type-II superconductors. muSR data on several different classes of type-II superconductors shows that the inner structure of a vortex can depend quite strongly on temperature and the strength of the external magnetic field. In this paper it is shown that these behaviours are related to the quasiparticle excitation spectrum both inside and outside of the vortex cores. Here we establish that the vortex-core size determined by muSR is particularly sensitive to the nature of the superconducting energy gap(s) and the symmetry of the Fermi surface. A survey of results for different superconductors arrives at the conclusion that the large vortex-core size observed by muSR in YBa2Cu3O6.95 is due to CuO chain superconductivity.

17 pages, To be published in a special issue of J. Phys. Cond. Mat

References in corpus (6)

• Vortex Imaging in the pi-Band of Magnesium Diboride
• Heat Conduction in the Vortex State of NbSe_2: Evidence for Multi-Band Superconductivity
• Observation of a Triangular to Square Flux Lattice Phase Transition in YBCO
• Absolute values of the London penetration depth in YBa2Cu3O6+y measured by zero field ESR spectroscopy on Gd doped single crystals
• Transport in Ultraclean YBa${}_2$Cu${}_3$O${}_7$: neither Unitary nor Born Impurity Scattering
• Shrinking Magnetic Vortices in V3Si Due to Delocalized Quasiparticle Core States: Confirmation of the Microscopic Theory for Interacting Vortices

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• Muon spin rotation studies of electronic excitations and magnetism in the vortex cores of superconductors
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• Role of CuO chains in vortex core structure in YBa2Cu3O{7-delta}
• On the interpretation of muon-spin-rotation experiments in the mixed state of type-II superconductors
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• Two-Gap Time Reversal Symmetry Breaking Superconductivity in Non-Centrosymmetric LaNiC2
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• Infrared Vortex-State Electrodynamics in Type-II Superconducting Thin Films
• Multiband superconductivity and penetration depth in PrOs4Sb12
• Magnetic field-induced quasiparticle excitation in Nb3Sn: Evidence for anisotropic s-wave pairing
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• Effect of CuO chains on the local density of states in the vortex phase of YBa_2Cu_3O_7
• Study of Magnetic Field Resilient High Impedance High-Kinetic Inductance Superconducting Resonators
• Field Dependence of the Superconducting Basal Plane Anisotropy of TmNi2B2C