离子液体门控与相变诱导的LaSrMnO/BaTiO异质结构中半导体到金属的转变
Ionic Liquid Gating and Phase Transition Induced Semiconducting to Metallic Transition in LaSrMnO/BaTiO Heterostructures.
作者信息
Wang Yuchen, Zheng Dongxing, Zhang Junwei, Zheng Wanchao, Wang Ping, Liu Shasha, Jin Chao, Bai Haili
机构信息
Tianjin Key Laboratory of Low Dimensional Materials Physics and Processing Technology, Institute of Advanced Materials Physics, School of Science, Tianjin University, Tianjin 300072, P. R. China.
Key Laboratory of Magnetism and Magnetic Materials of the Ministry of Education, School of Physical Science and Technology and Electron Microscopy Centre of Lanzhou University, Lanzhou University, Lanzhou 730000, P. R. China.
出版信息
ACS Appl Mater Interfaces. 2020 Sep 23;12(38):43257-43265. doi: 10.1021/acsami.0c11910. Epub 2020 Sep 9.
The strongly correlated LaSrMnO (LSMO) thin films were deposited on the BaTiO (BTO) substrates to study the influence of temperature-dependent phase transition of BTO on the magnetic and electric transport properties of the LSMO films. Because of the large lattice mismatch between the LSMO and BTO substrates, the ultrathin LSMO film exhibits semiconducting transport behavior rather than the normal metal-insulator transition behavior. A Mn-O-Mn dominated double exchange interaction, which leads to a semiconducting to metallic transition behavior, was formed by the joint effect of the ion-liquid gating and phase transition of the BTO substrates. Our work shows a special way to modulate the conduction mechanism, which opens up a new field for further study of the magnetoelectric coupling of the LSMO/BTO heterostructures.
将强关联的LaSrMnO（LSMO）薄膜沉积在BaTiO（BTO）衬底上，以研究BTO的温度依赖性相变对LSMO薄膜磁输运和电输运性质的影响。由于LSMO与BTO衬底之间存在较大的晶格失配，超薄LSMO薄膜表现出半导体输运行为，而非正常的金属-绝缘体转变行为。通过离子液体门控和BTO衬底相变的联合作用，形成了以Mn-O-Mn为主的双交换相互作用，该作用导致了从半导体到金属的转变行为。我们的工作展示了一种调节传导机制的特殊方法，为进一步研究LSMO/BTO异质结构的磁电耦合开辟了新的领域。
Zotero 插件