Measurements of the magnetic vortex lattice in the noncentrosymmetric superconductor Ru7B3
We propose to measure the magnetic vortex lattice (VL) in a single crystal of the non-centrosymmetric (NCS) superconductor Ru7B3 using small angle neutron scattering (SANS). NCS superconductors are of significant interest to the condensed matter community, as the crystal structure breaks inversion symmetry, leading to novel superconducting states with unusual properties [1]. Despite this interest, experimental data on NCS are sparse owing to the difficulty in obtaining high quality samples. We have obtained a large single crystal of Ru7B3, which has been prepared with the enriched 11B isotope, making it ideal for neutron scattering studies. The novel superconducting states associated with NCS superconductors have been predicted to have a significant effect on the VL within these materials, with the s+p-wave order parameter predicted for NCS leading to a strong anisotropy in the electronic states around the vortex [2,3]. Anisotropies in the electronic structure of a vortex lead to structural changes in the VL as the applied field and temperature are varied, allowing us to investigate the unusual superconducting states found in NCS with SANS.
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CAMERON Alistair; BALAKRISHNAN Geetha; M. Ciomaga Hatnean; CUBITT Robert; Dmytro Inosov; ONYKIIENKO Yevhen; PAUL Donald Mckenzie and Yuliia Tymoshenko. (2015). Measurements of the magnetic vortex lattice in the noncentrosymmetric superconductor Ru7B3. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-42-397