TY  - JOUR
AU  - Stock, C.
AU  - Rodriguez, E. E.
AU  - Lee, N.
AU  - Demmel, F.
AU  - Fouquet, P.
AU  - Laver, M.
AU  - Niedermayer, Ch.
AU  - Su, Y.
AU  - Nemkovskiy, Kirill
AU  - Green, M. A.
AU  - Rodriguez-Rivera, J. A.
AU  - Kim, J. W.
AU  - Zhang, L.
AU  - Cheong, S.-W.
TI  - Orphan Spins in the S = 5 2 Antiferromagnet CaFe 2 O 4
JO  - Physical review letters
VL  - 119
IS  - 25
SN  - 1079-7114
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2018-01473
SP  - 257204
PY  - 2017
AB  - CaFe2O4 is an anisotropic S=52 antiferromagnet with two competing A (↑↑↓↓) and B (↑↓↑↓) magnetic order parameters separated by static antiphase boundaries at low temperatures. Neutron diffraction and bulk susceptibility measurements, show that the spins near these boundaries are weakly correlated and a carry an uncompensated ferromagnetic moment that can be tuned with a magnetic field. Spectroscopic measurements find these spins are bound with excitation energies less than the bulk magnetic spin waves and resemble the spectra from isolated spin clusters. Localized bound orphaned spins separate the two competing magnetic order parameters in CaFe2O4.
LB  - PUB:(DE-HGF)16
C6  - pmid:29303328
UR  - <Go to ISI:>//WOS:000418619100018
DO  - DOI:10.1103/PhysRevLett.119.257204
UR  - https://juser.fz-juelich.de/record/843950
ER  -