Journal Article

FZJ-2017-01819

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png SANS study of vortex lattice structural transition in optimally doped (Ba$_{1− x}$K$_{x}$)Fe$_{2}$As$_{2}$

Demirdiş, S. (Corresponding author)FZJ* ; van der Beek, C. J. ; Mühlbauer, S. ; Su, Y.FZJ* ; Wolf, T.

2016
IOP Publ. Bristol

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Please use a persistent id in citations: http://hdl.handle.net/2128/13863  doi:10.1088/0953-8984/28/42/425701

Abstract: Small-angle neutron scattering on high quality single crystalline Ba1−x K x Fe2As2 reveals the transition from a low-field vortex solid phase with orientational order to a vortex polycrystal at high magnetic field. The vortex order–disorder transition is correlated with the second-peak feature in isothermal hysteresis loops, and is interpreted in terms of the generation of supplementary vortex solid dislocations. The sharp drop of the structure factor above the second peak field is explained by the dynamics of freezing of the vortex ensemble in the high field phase.

Keyword(s): Basic research (1st) ; Condensed Matter Physics (2nd) ; Magnetism (2nd)

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Contributing Institute(s):

1. JCNS-FRM-II (JCNS (München) ; Jülich Centre for Neutron Science JCNS (München) ; JCNS-FRM-II)
2. Streumethoden (JCNS-2)

Research Program(s):

1. 144 - Controlling Collective States (POF3-144) (POF3-144)
2. 6213 - Materials and Processes for Energy and Transport Technologies (POF3-621) (POF3-621)
3. 6G15 - FRM II / MLZ (POF3-6G15) (POF3-6G15)
4. 6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623) (POF3-623)

Experiment(s):

1. SANS-1: Small angle neutron scattering (NL4a)

Appears in the scientific report 2016

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Database coverage:
; ; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; NCBI Molecular Biology Database ; National-Konsortium ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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