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Thermodynamic properties of the field-induced Neel order of TlCuCl3 | | S. Stark
; O. Heyer
; A. Vasiliev
; A. Oosawa
; H. Tanaka
; T. Lorenz
; | | Date: |
17 Oct 2006 | | Subject: | Strongly Correlated Electrons | | Abstract: | TlCuCl3 shows a quantum phase transition from a spin-gap phase to a Neel-ordered ground state as a function of magnetic field around H_{C0}~4.8T.
From measurements of the specific heat c and the linear thermal expansion alpha_i we calculate the Grueneisen parameter Gamma_i(T)=alpha_i/c. Close to H_{C0} we find a diverging Gamma_i(T->0, in qualitative agreement with theoretical predictions. However, the predicted individual temperature dependencies of alpha(T) and c(T) are not reproduced by our experimental data. | | Source: | arXiv, cond-mat/0610487 | | Services: | Forum | Review | PDF | Favorites | |
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