Journal Article

FZJ-2019-03708

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Putative spin-nematic phase in BaCdVO ( PO 4 ) 2

Skoulatos, M. (Corresponding author)MLZ*TUM* ; Rucker, F.TUM* ; Nilsen, G. J. ; Bertin, A. ; Pomjakushina, E. ; Ollivier, J. ; Schneidewind, A.MLZ*FZJ* ; Georgii, R.MLZ*TUM* ; Zaharko, O. ; Keller, L.Extern* ; Rüegg, C. ; Pfleiderer, C.TUM* ; Schmidt, B.Extern* ; Shannon, N. ; Kriele, A.MLZ* ; Senyshyn, A.MLZ*TUM* ; Smerald, A.

2019
Inst. Woodbury, NY

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Please use a persistent id in citations: http://hdl.handle.net/2128/22540  doi:10.1103/PhysRevB.100.014405

Abstract: We report neutron-scattering and ac magnetic susceptibility measurements of the two-dimensional spin-1/2frustrated magnet BaCdVO(PO4 )2. At temperatures well below TN ≈ 1 K, we show that only 34% of the spinmoment orders in an up-up-down-down stripe structure. Dominant magnetic diffuse scattering and comparison topublished muon-spin-rotation measurements indicates that the remaining 66% is fluctuating. This demonstratesthe presence of strong frustration, associated with competing ferromagnetic and antiferromagnetic interactions,and points to a subtle ordering mechanism driven by magnon interactions. On applying magnetic field, we findthat at T = 0.1 K the magnetic order vanishes at 3.8 T, whereas magnetic saturation is reached only above 4.5 T.We argue that the putative high-field phase is a realization of the long-sought bond-spin-nematic state.

Keyword(s): Magnetic Materials (1st) ; Magnetism (2nd)

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Contributing Institute(s):

1. JCNS-FRM-II (JCNS-FRM-II)
2. Streumethoden (JCNS-2)
3. Technische Universität München (TUM)

Research Program(s):

1. 6G15 - FRM II / MLZ (POF3-6G15) (POF3-6G15)
2. 6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623) (POF3-623)

Experiment(s):

1. MIRA-2: Multipurpose instrument 2 (NL6S)
2. MIRA: Multipurpose instrument (NL6N)

Appears in the scientific report 2019

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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