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Slow spin-glass and fast spin-liquid components in quasi-two-dimensional La2(Cu,Li)O4 | | Y. Chen
; Wei Bao
; Y. Qiu
; J.E. Lorenzo
; J.L. Sarrao
; D.L. Ho
; Min Y. Lin
; | | Date: |
22 Oct 2005 | | Abstract: | In conventional spin glasses, magnetic interaction is not strongly anisotropic and the entire spin system is believed to be frozen below the spin-glass transition temperature. In La2Cu0.94Li0.06O4, for which the in-plane exchange interaction dominates the interplane one, only a fraction of spins with antiferromagnetic correlations extending to neighboring planes become spin-glass. The remaining spins with only in-plane antiferromagnetic correlations remain spin-liquid at low temperature. Such a novel partial spin freezing out of a two-dimensional spin-liquid observed in this cold neutron scattering study is likely due to a delicate balance between disorder and quantum fluctuations in the quasi-two dimensional S=1/2 Heisenberg system. | | Source: | arXiv, cond-mat/0510600 | | Services: | Forum | Review | PDF | Favorites | |
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