Paramagnetic Effects in the Vortex Lattice Field Distribution of Strongly Type-II Superconductors

Abstract

We present an analysis of the magnetic field distribution in the Abrikosov lattice of high-$\kappa$ superconductors with singlet pairing in the case where the critical field is mainly determined by the Pauli limit and the superfluid currents partly come from the paramagnetic interaction of electron spins with the local magnetic field. The derivation is performed in the frame of the generalized Clem variational method which is valid not too close to the critical field and furthermore with the Abrikosov type theory in the vicinity of it. The found vortex lattice form factor increases with increasing field and then falls down at approach of the upper critical field where the superconducting state is suppressed.

8 pages, 2 figures

References in corpus (2)

• Field Dependent Coherence Length in the Superclean, High-Kappa Superconductor CeCoIn5
• Pauli Paramagnetic Effects on Vortices in Superconducting TmNi2B2C

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• Vortex lattice studies in CeCoIn5 with H perpendicular to c
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• Simultaneous Evidence for Pauli Paramagnetic Effects and Multiband Superconductivity in KFe${}_2$As${}_2$ by Small-Angle Neutron Scattering Studies of the Vortex Lattice
• Strong pressure dependence of the magnetic penetration depth in single crystals of the heavy fermion superconductor CeCoIn5 studied by muon spin rotation
• Interplay of Superconductivity, Antiferromagnetism, and Pauli Depairing in CeCoIn${}_5$
• Field Dependence of the Superconducting Basal Plane Anisotropy of TmNi2B2C
• Muon Spin Rotation in Heavy Electron Pauli Limited Superconductors