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data archive 8994 disk0/00/00/07/11 2021-04-15 09:17:00 2024-08-17 04:50:27 2021-04-15 09:17:00 data_collection show Collomb David D.Collomb@bath.ac.uk 0000-0001-5591-8802 University of Bath TRUE Bending Simon S.Bending@bath.ac.uk 0000-0002-4474-2554 University of Bath FALSE Farrar Liam L.S.Farrar@bath.ac.uk 0000-0003-2945-5431 University of Bath FALSE Researcher Koshelev Alexei koshelev@anl.gov 0000-0002-1167-5906 Argonne National Laboratory Researcher Welp Ulrich welp@anl.gov 0000-0001-5357-0363 Argonne National Laboratory Researcher Smylie Matthew 0000-0003-1457-2248 Argonne National Laboratory Researcher Bao Jin-Ke 0000-0001-5522-3605 Argonne National Laboratory Researcher Chung Duck Young 0000-0002-1315-2631 Argonne National Laboratory Researcher Kanatzidis Mercouri G. 0000-0003-2037-4168 Northwestern University Researcher Kwok Wai-Kwong 0000-0003-0030-084X Argonne National Laboratory KF0010 KF0030 dept_physics Superconductivity, Magnetism, Imaging, Hall probe, Crystal The data was acquired by scanning Hall microscopy (SHM) in the rapid 'flying' mode that makes a rapid 2D magnetic scan of the maximum field of view. The data files consist of individual SHM images collected during these scans along with the appropriate text files for their averages. Transport data, performed at Bath, and magnetization data, performed at Argonne National Laboratory, for figure 1 are also included. 2021-04-14 University of Bath public These are files which include (a) magnetic images taken by our Scanning Hall Probe Microscope magnetic imager of the superconducting crystal, RbEuFeAs; (b) the electrical and magnetization data of the crystal performed by American collaborators at Argonne National Laboratory. RightsHolder University of Bath Sponsor U.S. Department of Energy RightsHolder Argonne National Laboratory Lloyd's Register Foundation https://doi.org/10.13039/100008885 G0086 Graphene-Hall-effect nanosensors to optimise high current superconducting tapes for applications in ‘smart’ power grids European Cooperation in Science and Technology https://doi.org/10.13039/501100000921 CA16218 Nanoscale Coherent Hybrid Devices For Superconducting Quantum Technologies (NANOCOHYBRI) Engineering and Physical Sciences Research Council https://doi.org/10.13039/501100000266 EP/R007160/1 Graphene Nanosensors for Scanning Hall Microscopy and Susceptometry Engineering and Physical Sciences Research Council https://doi.org/10.13039/501100000266 EP/L015544/1 EPSRC Centre for Doctoral Training in Condensed Matter Physics cent_nan Magnetic images were obtained by scanning Hall probe microscopy. This involves rastering a GaAs Hall probe located in close proximity to a scanning tunnelling microscope tip over the sample of interest via a piezoelectric tube. At each step the Hall voltage is recorded and converted into a magnetic field via a known Hall co-efficient, thus producing the magnetic map. Electronic transport measurements were performed by attaching gold wires with silver epoxy in a standard 5-lead Hall bar configuration. The in-plane resistivity was then measured as a function of temperature in a Quantum Design MPMS-7 system at Argonne National Labs. The SHM image data in the archive are raw as-captured data without any post-processing. SHM image datasets are formatted as the magnetic induction in Gauss measured at each point on a 1 128× 128 array of pixel positions. At the measurement temperatures of 35K, 30K, 25K, 20K, 17.5K, 16.25K, 15K, 13.75K, 12.5K, 10K, 7.5K and 5K. The scan area changes between temperatures with the following fitting: Area=(-1.037e-08*Temperature^4 + 5.547e-06*Temperature^3 + -0.0009229*Temperature^2 + 0.2264*Temperature + 6.483) 2019-07-21 2019-09-21 en 1 10.15125/BATH-00711 https://doi.org/10.1103/PhysRevLett.126.157001 pub open