Dissertation / PhD Thesis

IMPULSE-2017-00030

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Vortex matter beyond SANS

Reimann, T. (Corresponding author)MLZ*

2017

Please use a persistent id in citations: urn:nbn:de:bvb:91-diss-20170112-1326292-1-4

Abstract: This thesis is concerned with different generic types of vortex matter arising in the intermediate state of the type-I superconductor lead, the intermediate mixed state of the type-II superconductor niobium, and the helimagnetic phase of the compound manganese silicide. It is demonstrated and explained how a combination of i) the radiographic techniques neutron grating interferometry and neutron diffractive imaging with ii) scattering methods such as small-angle-neutron scattering and ultra-small-angle neutron scattering can provide novel insight into the bulk behavior of these vortex systems. By means of the used scattering methods, detailed information on the morphology of the vortex phases covering a length scale of 0.01 to 10 µm are obtained, while the radiographic approaches additionally map the spatial distribution of vortices within the sample. In particular, this thesis focuses on the strong influences of demagnetization, geometric barriers and pinning on the vortex configuration.

Keyword(s): Energy (1st) ; Condensed Matter Physics (2nd) ; Materials Science (2nd)

Note: Technische Universität München, Diss., 2017

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Contributing Institute(s):

1. ANTARES
2. E21
3. KWS3
4. SANS1

Research Program(s):

1. NMI3-II - Neutron Scattering and Muon Spectroscopy Integrated Initiative (283883) (283883)

Experiment(s):

1. ANTARES: Cold neutron radiography and tomography station (SR4a)
2. SANS-1: Small angle neutron scattering (NL4a)
3. KWS-3: Very small angle scattering diffractometer with focusing mirror (NL3auS)

Appears in the scientific report 2017

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