Gate-controlled magnetic transitions in Fe3GeTe2 with lithium ion conducting glass substrate*
Gate-controlled magnetic transitions in Fe3GeTe2 with lithium ion conducting glass substrate*
复制标题
具有锂离子导电玻璃基板的 Fe3GeTe2 中的门控磁转变
DOI：
10.1088/1674-1056/ac1338
复制
发表时间：
2021-09-01
影响因子：
1.7
通讯作者：
Chen, Jian-Hao
中科院分区：
文献类型：
--
作者：
Chen, Guangyi;Zhang, Yu;Chen, Jian-Hao
自从二维磁性被发现以来，有效地操纵货车范德华磁体的磁性一直是一个至关重要的目标。离子门控是一种很有前途的方法，这种操作，但与传统的离子液体门控器件可能有一些限制，由于液体性质的栅极电介质的应用。锂离子导电玻璃陶瓷（LICGC）是一种固体锂离子电解质，可以用作基板，同时作为一个有前途的替代离子液体。在这里，我们证明了铁磁性的Fe3GeTe2（FGT）可以通过LICGC调制。通过在FGT和LICGC衬底背面之间施加电压，Li+掺杂发生，并导致FGT纳米片中矫顽场（Hc）和铁磁转变温度（Tc）的降低。在Vg = 3.5V，T = 100K时，Hc的调制效率高达24.6%。我们的结果提供了另一种方法来构建电控磁电子学，在未来的信息技术中具有潜在的应用。
Since the discovery of magnetism in two dimensions, effective manipulation of magnetism in van der Waals magnets has always been a crucial goal. Ionic gating is a promising method for such manipulation, yet devices gated with conventional ionic liquid may have some restrictions in applications due to the liquid nature of the gate dielectric. Lithium-ion conducting glass-ceramics (LICGC), a solid Li+ electrolyte, could be used as a substrate while simultaneously acts as a promising substitute for ionic liquid. Here we demonstrate that the ferromagnetism of Fe3GeTe2 (FGT) could be modulated via LICGC. By applying a voltage between FGT and the back side of LICGC substrate, Li+ doping occurs and causes the decrease of the coercive field (H c) and ferromagnetic transition temperature (T c) in FGT nanoflakes. A modulation efficiency for H c of up to ∼ 24.6% under V g = 3.5 V at T = 100 K is achieved. Our results provide another method to construct electrically-controlled magnetoelectronics, with potential applications in future information technology.