Vortex Lattice Studies in CeCoIn5 with H perpendicular to c

P Das, Jonathan White, Alexander Holmes, S Gerber, Edward Forgan, AD Bianchi, M Kenzelmann, M Zolliker, JL Gavilano, ED Bauer, JL Sarrao, C Petrovic, MR Eskildsen

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13 Citations (Scopus)

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 parallel to [100], a single VL orientation is observed, while a 90 degrees reorientation transition is found for H parallel to [110]. For both field orientations and VL configurations we find a distorted hexagonal VL with an anisotropy, Gamma = 2.0 +/- 0.05. The VL form factor shows strong Pauli paramagnetic effects similar to what have previously been reported for H parallel to [001]. At high fields, above which the upper critical field (H-c2) becomes a first-order transition, an increased disordering of the VL is observed.
Original languageEnglish
Pages (from-to)087002
Number of pages1
JournalPhysical Review Letters
Volume108
Issue number8
DOIs
Publication statusPublished - 1 Feb 2012

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