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arXiv 1310.7451cond-mat.mtrl-scicond-mat.str-el
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锰掺杂CdGeAs2黄铜矿中压力诱导类变磁性态的出现

Emergence of pressure-induced metamagnetic-like state in Mn-doped CdGeAs2 chalcopyrite

T. R. Arslanov, A. Yu. Mollaev, I. K. Kamilov, R. K. Arslanov, L. Kilanski, V. M. Trukhan, T. Chatterji, S. F. Marenkin, I. V. Fedorchenko

摘要:

研究了静水压力对两种MnAs微团簇掺杂的CdGeAs 2室温铁磁黄铜矿电阻率和交流磁化率的影响。在RT和居里温度TC之间的温度升高约30 K时,低压区的压致超导-金属相变和磁相变的位置发生了明显的变化。通过测量磁场H \leq 5 kOe中的反常霍尔电阻,给出了压力P = 5 GPa时顺磁相的压力诱导类变磁态的实验证据.

英文摘要:

The effect of hydrostatic pressure on resistivity and magnetic ac susceptibility has been studied in Mn-doped CdGeAs2 room-temperature (RT) ferromagnetic chalcopyrite with two types of MnAs micro-clusters. The slight increase of temperature by about 30 K in the region between RT and Curie temperature TC causes a significant change in the positions of pressure-induced semiconductor-metal transition and magnetic phase transitions in low pressure area. By conducting measurements of the anomalous Hall resistance in the field H \leq 5 kOe, we present experimental evidence for pressure-induced metamagnetic-like state during the paramagnetic phase at pressure P = 5 GPa.

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