Ordering in Triangular Lattice Ising Antiferromagnet Due to Dilution and Magnetic Field

M. Žukovič, M. Borovský, A. Bobák
2010 Acta Physica Polonica. A  
We study effects of an external magnetic field and random site dilution on the magnetic ordering in the geometrically frustrated triangular lattice Ising antiferromagnet by the use of an effective-field theory with correlations. In particular, we find that already a small amount of the quenched dilution locally relieves the frustration which in the presence of the external field is manifested by multiple splitting of a broad frustration-induced 1/3 magnetization plateau. Depending on the field
more » ... nding on the field strength, the dilution can either decrease or increase the magnetization or even change its effect from decreasing to increasing.
doi:10.12693/aphyspola.118.740 fatcat:aq46grt3vna33ahdm3xr25rojm