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Vortex Lattice Studies in CeCoIn5 with H Perpendicular to c

Type of publication Peer-reviewed
Publikationsform Original article (peer-reviewed)
Author Das P., White J. S., Holmes A. T., Gerber S., Forgan E. M., Bianchi A. D., Kenzelmann M., Zolliker M., Gavilano J. L., Bauer E. D., Sarrao J. L., Petrovic C., Eskildsen M. R.,
Project Interplay of Magnetism and Superconductivity in Unconventional Superconductors
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Original article (peer-reviewed)

Journal Physical Review Letters
Volume (Issue) 108(8)
Page(s) 087002-1 - 087002-5
Title of proceedings Physical Review Letters
DOI 10.1103/PhysRevLett.108.087002

Abstract

We present small angle neutron scattering studies of the vortex lattice (VL) in CeCoIn5 with magnetic fields applied parallel (H) to the antinodal [100] and nodal [110] directions. For H∥[100], a single VL orientation is observed, while a 90° reorientation transition is found for H∥[110]. For both field orientations and VL configurations we find a distorted hexagonal VL with an anisotropy, Γ=2.0±0.05. The VL form factor shows strong Pauli paramagnetic effects similar to what have previously been reported for H∥[001]. At high fields, above which the upper critical field (Hc2) becomes a first-order transition, an increased disordering of the VL is observed.
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