Ising spin glass in a transverse magnetic field.
نویسندگان
چکیده
We study the three-dimensional quantum Ising spin glass in a transverse magnetic field following the evolution of the bond probability distribution under Renormalisation Group transformations. The phase diagram (critical temperature Tc vs transverse field Γ) we obtain shows a finite slope near T = 0, in contrast with the infinite slope for the pure case. Our results compare very well with the experimental data recently obtained for the dipolar Ising spin glass LiHo0.167Y0.833F4, in a transverse field. This indicates that this system is more apropriately described by a model with short range interactions than by an equivalent Sherrington-Kirkpatrick model in a transverse field. PACS: 75.50.Lk, 05.30.-d, 75.10.Jm, 75.30.Kz Typeset using REVTEX
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ورودعنوان ژورنال:
- Physical review. B, Condensed matter
دوره 49 9 شماره
صفحات -
تاریخ انتشار 1994