Dresden 2017 – wissenschaftliches Programm
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TT: Fachverband Tiefe Temperaturen
TT 2: Superconductivity: Properties and Electronic Structure 1
TT 2.1: Vortrag
Montag, 20. März 2017, 09:30–09:45, HSZ 103
Local probe study of exotic superconductivity via magnetic force microscopy — •Dirk Wulferding1,2, Hoon Kim1,3, Ilkyu Yang1,3, Eric Bauer4, Joe Thompson4, Ryan Baumbach5, Leonardo Civale4, and Jeehoon Kim1,3 — 1CALDES, Institute for Basic Science, Pohang, Korea — 2IPKM und LENA, TU-BS, Braunschweig, Germany — 3Dept. of Phys., POSTECH, Pohang, Korea — 4MPA-CMMS, Los Alamos Natl. Lab., Los Alamos, USA — 5NHML, Florida State Univ., Tallahassee, USA
Magnetic force microscopy has established itself as a valuable tool to uncover magnetic domain structures on the nanoscale. On the other hand, its magnetically coated tip can serve as an ideal local probe to characterize important properties of superconducting samples [1,2]. We have recently completed designing and constructing a low temperature, 3He magnetic force microscope operating within a three-axis vector magnet [3]. We demonstrate how to employ this system to locally investigate intrinsic properties of the heavy fermion superconductor CeCoIn5, such as the London penetration depth, the pairing symmetry, as well as the pinning force of single Abrikosov vortices.
[1] Kim, et al., Supercond. Sci. Technol. 25, 112001 (2012).
[2] Wulferding, et al., Phys. Rev. B 92, 014517 (2015).
[3] Yang, et al., Rev. Sci. Instrum. 87, 023704 (2016).