Cd_(0.96)Zn_(0.04)S/Cd_(0.97)Mn_(0.03)S/Cd_(0.96)Zn_(0.04)S多层纳米线中s-d交换作用的研究  

Observation of s-d exchange interaction within Cd_(0.96)Zn_(0.04)S/Cd_(0.97)Mn_(0.03)S/Cd_(0.96)Zn_(0.04)S multilayer nanowires

作　　者：陈佩赓[1] 鲁家导 郭文安[1] 李永良[2] 高有辉[1] 

机构地区：[1]北京师范大学物理系,北京100875 [2]北京师范大学分析测试中心,北京100875

出　　处：《物理学报》2014年第18期407-411,共5页Acta Physica Sinica

摘　　要：以氧化铝纳米孔为模板,采用直流电化学沉积的方法制备了Cd_(0.96)Zn_(0.04)S/Cd_(0.97)Mn_(0.03)S/Cd_(0.96)Zn_(0.04)S量子阱纳米线阵列,并系统研究了该纳米线阵列在不同温度和不同磁场下的电学输运特性.随着外磁场的变化,样品表现出共振传输特性.通过量子阱理论对实验现象进行了分析,直接得到了稀磁层Cd_(0.97)Mn_(0.03)S中s-d交换作用常数N_0α的定量结果.研究发现该交换作用常数随温度具有e^(-1/T)的变化趋势.Transport properties of Cd0.96Zn0.04S/Cd0.97Mn0.03S/Cd0.96Zn0.04S multilayer nanowires, deposited in porous an-odic aluminum oxide templates by DC electrochemical method, are studied. It is found that the transmission current oscillates against the applied magnetic field, even the thickness of the spin doping barrier is about 96 nm. s-d exchange constant N0 is obtained from the resonant transmission measurement. A e- 1T temperature dependence of N0αndicates the electrostatic interaction nature of the s-d exchange interaction.

关 键 词：Cd0.96Zn0.04S Cd0.97Mn0.03S Cd0.96Zn0.04S量子阱纳米线 共振传输 s—d交换作用 

分 类 号：O471.1[理学—半导体物理]