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Impurity-Induced Antiferromagnetic Ordering in the Spin Gap System TlCuCl_3 | | A. Oosawa
; T. Ono
; H. Tanaka
; | | Date: |
1 Feb 2002 | | Subject: | Strongly Correlated Electrons | cond-mat.str-el | | Abstract: | The magnetization measurements have been performed on the doped spin gap system TlCu_{1-x}Mg_xCl_3 with x <= 0.025. The parent compound TlCuCl_3 is a three-dimensional coupled spin dimer system with the excitation gap Delta/k_B = 7.7 K. The impurity-induced antiferromagnetic ordering was clearly observed. The easy axis lies in the (0,1,0) plane. It was found that the transition temperature increases with increasing Mg^{2+} concentration x, while the spin-flop transition field is almost independent of x. The magnetization curve suggests that the impurity-induced antiferromagnetic ordering coexists with the spin gap for x <= 0.017. | | Source: | arXiv, cond-mat/0202004 | | Services: | Forum | Review | PDF | Favorites | |
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