TY  - JOUR
AU  - Skoulatos, M.
AU  - Rucker, F.
AU  - Nilsen, G. J.
AU  - Bertin, A.
AU  - Pomjakushina, E.
AU  - Ollivier, J.
AU  - Schneidewind, A.
AU  - Georgii, R.
AU  - Zaharko, O.
AU  - Keller, L.
AU  - Rüegg, Ch.
AU  - Pfleiderer, C.
AU  - Schmidt, B.
AU  - Shannon, N.
AU  - Kriele, A.
AU  - Senyshyn, A.
AU  - Smerald, A.
TI  - Putative spin-nematic phase in BaCdVO ( PO 4 ) 2
JO  - Physical review / B
VL  - 100
IS  - 1
SN  - 2469-9950
CY  - Woodbury, NY
PB  - Inst.
M1  - FZJ-2019-03708
SP  - 014405
PY  - 2019
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000473534600003
DO  - DOI:10.1103/PhysRevB.100.014405
UR  - https://juser.fz-juelich.de/record/863704
ER  -