Splitting of antiferromagnetic resonance modes in the quasi-two-dimensional collinear antiferromagnet Cu(en)(H${}_2$O)${}_2$SO${}_4$

V. N. Glazkov, Yu. V. Krasnikova, I. K. Rodygina +3

Low-temperature magnetic resonance study of the quasi-two-dimensional antiferromagnet Cu(en)(H${}_2$O)${}_2$SO${}_4$ (en = C${}_2$H${}_8$N${}_2$) was performed down to 0.45~K. This compound or…