Coexistence of magneto-resistance and -capacitance tunability in Sm2Ga2Fe2O9

Magnetic Field Tunable Capacitive Dielectric:Ionic-liquid Sandwich Composites

We examined the tunability of the capacitance for GaFeO3-ionic liquid-GaFeO3 composite material by external magnetic and electric field. Up to 1.6 folds of capacitance tunability could be achieved at 957kHz with voltage 4v and magnetic field 0.02T applied. We show that the capacitance enhancement is due to the polarization coupling between dielectric layer and ionic liquid layer.

RuO₂中轨道霍尔效应与自旋霍尔效应的共存与可调性

Coexistence and tunability of orbital and spin Hall effects in RuO$_2$

研究RuO₂中轨道霍尔效应与自旋霍尔效应的共存及可调性，揭示其在不同相变中的主导作用，为理解自旋电流转换提供新机制。

Multiferroicity and colossal magneto-capacitance in Cr-thiospinels

The sulfur based Cr-spinels RCr2S4 with R = Cd and Hg exhibit the coexistence of ferromagnetic and ferroelectric properties together with a pronounced magnetocapacitive coupling. While in CdCr2S4 purely ferromagnetic order is established, in HgCr2S4 a bond-frustrated magnetic ground state is realized, which, however, easily can be driven towards a ferromagnetic configuration in weak magnetic fields. This paper shall review our recent investigation for both compounds. Besides the characterization of the magnetic properties, the complex dielectric permittivity was studied by means of broadband d…

基于LaAlO3/SrTiO3界面的器件中受门控的模拟电容

Gate-controlled analog memcapacitance in LaAlO3/SrTiO3 interface-based devices

本文提出利用LaAlO3/SrTiO3异质界面形成的准二维电子气作为电极，SiO2/SrTiO3作为介电层，实现门控模拟电容，通过门电压调节电容，展示其在神经形态电子架构中的应用潜力。

WSe2调控的扭曲双层石墨烯中的局域反对称平带及共存的关联条纹电荷序

Local-Antisymmetric Flat Band and Coexisting Correlated stripe charge orders in WSe2-Modulated Twisted Bilayer Graphene

该研究通过WSe2衬底的原子对齐调控魔角双层石墨烯能带，实现平带局域反对称性破缺，首次观测到正交条纹电荷序共存，揭示了界面原子对齐作为平带物理新调控参数的重要作用。