Aharonov-Bohm effect in monolayer phosphorene nanorings
Aharonov-Bohm effect in monolayer phosphorene nanorings
复制标题
单层磷烯纳米环中的阿哈罗诺夫-玻姆效应
DOI：
10.1103/physrevb.95.125418
复制
发表时间：
2017-03
影响因子：
3.7
通讯作者：
Chang Kai
中科院分区：
文献类型：
--
作者：
Zhang Rui;Wu Zhenhua;Li X. J.;Chang Kai
This work presents theoretical demonstration of Aharonov-Bohm (AB) effect in monolayer phosphorene nanorings (PNR). Atomistic quantum transport simulations of PNR are employed to investigate the impact of multiple modulation sources on the sample conductance. In presence of a perpendicular magnetic field, we find that the conductance of both armchair and zigzag PNR oscillate periodically in a low-energy window as a manifestation of the AB effect. Our numerical results have revealed a giant magnetoresistance (MR) in zigzag PNR (with a maximum magnitude approaching two thousand percent). It is attributed to the AB effect induced destructive interference phase in a wide energy range below the bottom of the second subband. We also demonstrate that PNR conductance is highly anisotropic, offering an additional way to modulate MR. The giant MR in PNR is maintained at room temperature in the presence of thermal broadening effect.
DOI：
--
发表时间：
2004
期刊：
--
影响因子：
--
作者：
L. Sehgal;J. V. Leusen
通讯作者：
L. Sehgal;J. V. Leusen