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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Phase diagrams of the spin-3/2 random transverse crystal field model
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Phase diagrams of the spin-3/2 random transverse crystal field model

机译：自旋3/2随机横向晶体场模型的相图。

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摘要

The mean-field approximation is used to calculate the phase diagrams of the spin-3/2 random transverse crystal field (RTCF) model. A bimodal distribution of the RTCF is employed in which one of the modes is in competition with the other mode whose strength is adjusted with a controllable parameter α. Thus, some sites in the lattice are under the effect of RTCF Dx with probability p and the rest of the sites are under the effect of α D_x with 1- p. The phase diagrams of the model are obtained on the RTCF-temperature planes by varying p on square lattices. Both second- and first-order phase transitions are displayed and thus tricritical points are also observed. The critical end points and end points for the first-order phase transition lines were also found.
机译：平均场近似用于计算自旋3/2随机横向晶体场（RTCF）模型的相图。采用RTCF的双峰分布，其中一种模式与另一种模式竞争，另一种模式的强度通过可控制的参数α进行调节。因此，晶格中的某些位点受RTCF Dx的影响，概率为p，其余位点受αD_x的影响，概率为1-p。通过改变方格上的p，可在RTCF温度平面上获得模型的相图。同时显示了二阶和一阶相变，因此也观察到了三临界点。还发现了临界端点和一阶相变线的端点。

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