Lusakowski A, Górska M, Anderson J R, Dagan Y, Gołacki Z
Institute of Physics, Polish Academy of Sciences, Aleja Lotników 32/46, 02-668 Warsaw, Poland.
J Phys Condens Matter. 2009 Jul 1;21(26):265802. doi: 10.1088/0953-8984/21/26/265802. Epub 2009 Jun 5.
The temperature dependence of the magnetic specific heat of the semimagnetic semiconductor Pb(1-x)Gd(x)Te for x = 0.033 and 0.054, over the temperature range from 0.5 to 10 K, in magnetic fields up to 2 T, has been measured and analyzed theoretically. The maxima of the magnetic specific heat in nonzero magnetic fields are shifted to lower temperatures in comparison with theoretical predictions based on the simple cluster model. We propose a mechanism which explains these shifts. According to our model, they are caused by strong hybridization of the 5d shell of gadolinium with band states of the crystal.
在高达2T的磁场中，对x = 0.033和0.054的半磁性半导体Pb(1 - x)Gd(x)Te在0.5至10K温度范围内的磁比热与温度的关系进行了测量和理论分析。与基于简单团簇模型的理论预测相比，非零磁场中磁比热的最大值向更低温度移动。我们提出了一种解释这些移动的机制。根据我们的模型，它们是由钆的5d壳层与晶体的能带态强烈杂化引起的。
