标题： p型HgCdTe反转型层中高迁移率二维电子气的弱反常局域化效应 显示英文标题

标题： Weak antilocalization effect of high-mobility two-dimensional electron gas in inversion layer on p-type HgCdTe

摘要： 栅控的p型HgCdTe晶体反转型层中的二维电子气(2DEG)的磁导率被研究。 在强磁场下，观察到了具有单子带占据的2DEG的量子霍尔效应等特征特性。 在弱磁场下，观察到了弹道区域的弱反局域化效应。 根据Golub模型提取了相位相干时间和零场自旋分裂。 去相位率的温度依赖性与包含单重态和三重态通道相互作用的Nyquist机制一致。 显示英文摘要

摘要： Magnetoconductance of a gated two-dimensional electron gas (2DEG) in the inversion layer on p-type HgCdTe crystal is investigated. At strong magnetic fields, characteristic features such as quantum Hall effect of a 2DEG with single subband occupation are observed. At weak magnetic fields, weak antilocalization effect in ballistic regime is observed. Phase coherence time and zero-field spin-splitting are extracted according to Golub's model. The temperature dependence of dephasing rate is consistent with Nyquist mechanism including both singlet and triplet channel interactions.