b0b体育app下载

当前位置:首页  2023年

b0b体育app下载:Excitation-assisted pseudo-ferroelectric effect in ultrathin graphene/phosphorene heterostructure

时间:2023-07-28来源:国际前沿科学研究院点击:271

Huan Lu, Wanlin Guo,Nano Research  , 2023.


Abstract: 

Pseudo-ferroelectric transistors have attracted particular interest owing to their applications in the non-volatile memories and neuromorphic circuits; however, it remains to be explored in the limit of few-layer devices. Here we reveal a pseudo-ferroelectric phenomenon in the ultrathin graphene/black phosphorene (G/BP) heterostructure by first-principles calculations. Putting forward an excitation-assisted mechanism, the ferroelectric-like hysteresis loop can be explained by a combined effect of the external electric fields dependent bipolarity and anisotropy in the G/BP heterostructure. Considering the build-in electric field, the bipolar behavior results in the multistate effect of the G/BP heterostructure when modulating the applied electric field. The anisotropic hybridization caused by the susceptible Dirac electrons in graphene and the large in-plane anisotropy in BP provides the interfacial states, which trap excitations and stabilize the multistate. The pseudo-ferroelectric behavior should be useful for interpreting transport experiments in gated G/BP devices and exploring its applications in memories or synaptic devices.


1.jpg

 

Link: https://link.springer.com/article/10.1007/s12274-023-5649-3



b0b体育app下载:联系我们

电话:025-84896467
邮箱:IFS@nuaa.edu.cn
邮编:210016
地址:江苏省南京市秦淮区御道街29号

b0b体育app下载:链接

--校内链接--

  • 校内链接

--校外链接--

  • 校外链接

b0b体育app下载:关注我们

微信公众号

b0b体育app下载 - 搜狗指南