Chen C H, Tseng P, Yang Y Y, Hsueh W J
Department of Engineering Science and Ocean Engineering, Nanomagnetism Group, National Taiwan University, 1, Sec. 4, Roosevelt Road, Taipei 10660, Taiwan.
J Phys Condens Matter. 2017 Jan 18;29(2):025806. doi: 10.1088/0953-8984/29/2/025806. Epub 2016 Nov 14.
Enhancement of thermal spin transfer torque in a double-barrier magnetic tunnel junction with a nonmagnetic-metal spacer is proposed in this study. The results indicate that, given the same temperature difference, thermal spin transfer torque and charge current density for the proposed double barrier magnetic tunnel junction configuration can be approximately twice as much as that of the traditional single-barrier magnetic tunnel junctions. This enhancement can be attributed to the resonant tunneling mechanism in the double-barrier structure.
本研究提出了一种具有非磁性金属间隔层的双势垒磁性隧道结中热自旋转移转矩的增强方法。结果表明，在相同的温度差下，所提出的双势垒磁性隧道结结构的热自旋转移转矩和电荷电流密度大约是传统单势垒磁性隧道结的两倍。这种增强可归因于双势垒结构中的共振隧穿机制。
