Classical antiferromagnet on a hyperkagome lattice

Details Classical antiferromagnet on a hyperkagome lattice Classical antiferromagnet on a hyperkagome lattice

2006-11-08

arxiv.org/abs/cond-mat/0611231v2

Phys. Rev. Lett. 99, 037201 (2007)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 6 figures, published version

Scientific paper

10.1103/PhysRevLett.99.037201

Motivated by recent experiments on Na_4Ir_3O_8 [Y. Okamoto, M. Nohara, H. Aruga-Katori, and H. Takagi, arXiv:0705.2821 (unpublished)], we study the classical antiferromagnet on a frustrated three-dimensional lattice obtained by selectively removing one of four sites in each tetrahedron of the pyrochlore lattice. This ``hyperkagome'' lattice consists of corner-sharing triangles. We present the results of large-N mean field theory and Monte Carlo computations on O(N) classical spin models. It is found that the classical ground states are highly degenerate. Nonetheless a nematic order emerges at low temperatures in the Heisenberg model (N=3) via ``order by disorder'', representing the dominance of coplanar spin configurations. Implications for ongoing experiments are discussed.

Affiliated with

Also associated with

No associations

Rating

Classical antiferromagnet on a hyperkagome lattice does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Classical antiferromagnet on a hyperkagome lattice, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Classical antiferromagnet on a hyperkagome lattice will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-407419