Incommensurate Magnetic Order in TbTe$_3$

Details Incommensurate Magnetic Order in TbTe$_3$ Incommensurate Magnetic Order in TbTe$_3$

2011-10-17

arxiv.org/abs/1110.4072v1

J. Phys.: Condens. Matter 24 (2012) 036001

Physics

Condensed Matter

Strongly Correlated Electrons

Scientific paper

10.1088/0953-8984/24/3/036001

We report a neutron diffraction study of the magnetic phase transitions in the charge-density-wave (CDW) TbTe$_3$ compound. We discover that in the paramagnetic phase there are strong 2D-like magnetic correlations, consistent with the pronounced anisotropy of the chemical structure. A long-range incommensurate magnetic order emerges in TbTe$_3$ at $T_{mag1}$ = 5.78 K as a result of continuous phase transitions. We observe that near the temperature $T_{mag1}$ the magnetic Bragg peaks appear around the position (0,0,0.24) (or its rational multiples), that is fairly close to the propagation vector $(0,0,0.29)$ associated with the CDW phase transition in TbTe$_3$. This suggests that correlations leading to the long-range magnetic order in TbTe$_3$ are linked to the modulations that occur in the CDW state.

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