Exchange anisotropy as mechanism for spin-stripe formation in frustrated spin chains (CROSBI ID 230834)
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Podaci o odgovornosti
Pregelj, Matej ; Zaharko, Oksana ; Herak, Mirta ; Gomilšek, Matjaž ; Zorko, Andrej ; Chapon, Laurent ; Bourdarot, Frederic ; Berger, Helmuth ; Arčon, Denis
engleski
Exchange anisotropy as mechanism for spin-stripe formation in frustrated spin chains
We investigate the spin-stripe mechanism responsible for the peculiar nanometer modulation of the incommensurate magnetic order that emerges between the vector-chiral and the spin-density-wave phase in the frustrated zigzag spin-1/2 chain compound beta-TeVO4. A combination of magnetic-torque, neutron-diraction and spherical-neutron-polarimetry measurements is employed to determine the complex magnetic structures of all three ordered phases. Based on these results, we develop a simple phenomenological model, which exposes the exchange anisotropy as the key ingredient for the spin-stripe formation in frustrated spin systems.
zig zag spin chains ; frustrated spin system ; exchange anisotropy
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Podaci o izdanju
94 (8)
2016.
081114
5
objavljeno
1082-586X
1089-4896
10.1103/PhysRevB.94.081114