Effects of pressure on the carrier behavior of HgSe
Effects of pressure on the carrier behavior of HgSe
复制标题
压力对HgSe载流子行为的影响
DOI：
10.1080/08957959.2015.1082558
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发表时间：
2015
影响因子：
2
通讯作者：
Gao Chunxiao
中科院分区：
文献类型：
--
作者：
Hu Tingjing;Cui Xiaoyan;Li Xuefei;Wang Jingshu;Yang Jinghai;Gao Chunxiao
HgSe的霍尔效应测量在31 GPa下进行。结果发现，在每个相变的载波参数不连续地变化。压缩条件下电阻率的变化由载流子参数描述。朱砂迁移率的降低表明螺旋链之间的相互作用在压力下变得更强。结合实验结果和理论计算，可以得出：在锌精矿→朱砂→岩盐的相变过程中，如果以置换Hg原子为主，则产生空穴，空穴浓度增加;相反，如果以置换Se原子为主，则产生电子，电子浓度增加。
In situHall effect measurement of HgSe was conducted up to 31 GPa. It was found that the carrier parameters changed discontinuously at each phase transition. The resistivity variation under compression was described by the carrier parameters. The decrease in cinnabar mobility indicates that the interaction between the helical chains becomes stronger under pressure. Combining the results of experiment and theory calculation, it can be concluded that in the phase transition process from zinc blende through cinnabar to rock salt, if Hg atom is mainly displaced , hole will be generated and its concentration will increase; on the contrary, if Se atom is mainly displaced, electrons will be generated and their concentration will increase.