Bibliographic Details
| Title: |
Collinear order in a frustrated three-dimensional spin-$\frac12$ antiferromagnet Li$_2$CuW$_2$O$_8$ |
| Authors: |
Ranjith, K. M., Nath, R., Skoulatos, M., Keller, L., Kasinathan, D., Skourski, Y., Tsirlin, A. A. |
| Source: |
Phys. Rev. B 92, 094426 (2015) |
| Publication Year: |
2014 |
| Collection: |
Condensed Matter |
| Subject Terms: |
Condensed Matter - Materials Science, Condensed Matter - Strongly Correlated Electrons |
| More Details: |
Magnetic frustration in three dimensions (3D) manifests itself in the spin-$\frac12$ insulator Li$_2$CuW$_2$O$_8$. Density-functional band-structure calculations reveal a peculiar spin lattice built of triangular planes with frustrated interplane couplings. The saturation field of 29 T contrasts with the susceptibility maximum at 8.5 K and a relatively low N\'eel temperature $T_N\simeq 3.9$ K. Magnetic order below $T_N$ is collinear with the propagation vector $(0,\frac12,0)$ and an ordered moment of 0.65(4) $\mu_B$ according to neutron diffraction data. This reduced ordered moment together with the low maximum of the magnetic specific heat ($C^{\max}/R\simeq 0.35$) pinpoint strong magnetic frustration in 3D. Collinear magnetic order suggests that quantum fluctuations play crucial role in this system, where a non-collinear spiral state would be stabilized classically.
Comment: published version with supplemental material merged into the text |
| Document Type: |
Working Paper |
| DOI: |
10.1103/PhysRevB.92.094426 |
| Access URL: |
http://arxiv.org/abs/1412.5578 |
| Accession Number: |
edsarx.1412.5578 |
| Database: |
arXiv |
