论文标题
la $ _ {0.67} $ sr $ _ {0.33} $ mno $ _3 $/batio $ _3 $异质结构由flexoelectric弯曲引起的异质结构
Asymmetric Ground States in La$_{0.67}$Sr$_{0.33}$MnO$_3$/BaTiO$_3$ heterostructures Induced by Flexoelectric Bending
论文作者
论文摘要
从单晶底物传递的不合适应变通常会修饰过渡金属氧化物的基态，从而增加对设计现代传感器和传感器的兴趣。在这里，我们证明了la $ _ {0.67} $ sr $ _ {0.33} $ mno $ _3 $ _3 $（lsmo）胶片的磁转运属性是由由家用设计的弯曲夹具产生的单轴菌株不断调节的。通过弯曲应力增强了LSMO膜的电导率和库丽温度。 U形弯曲的LSMO的电阻率比N形弯曲的LSMO的衰减速度快三倍，作为对相同菌株的响应。单次紧张的LSMO中的不对称磁态归因于Jahn-Teller失真和应变梯度介导的挠性磁场在相邻的铁电层中的双重作用。这些在单个材料中对多场调节的发现为开发柔性电子和自旋设备提供了一种可行的手段。
Misfit strain delivered from single-crystal substrates typically modifies the ground states of transition metal oxides, generating increasing interests in designing modern transducers and sensors. Here, we demonstrate that magnetotransport properties of La$_{0.67}$Sr$_{0.33}$MnO$_3$ (LSMO) films were continuously tuned by uniaxial strain produced by a home-designed bending jig. The electrical conductivity and Curie temperature of LSMO films are enhanced by bending stresses. The resistivity of a u-shape bended LSMO decays three times faster than that of a n-shape bended LSMO as a response to the same magnitude of strain. The asymmetric magnetic states in uniaxially strained LSMO are attributed to the dual actions of Jahn-Teller distortion and strain gradient mediated flexoelectric fields in an adjacent ferroelectric layer. These findings of multi-field regulation in a single material provide a feasible means for developing flexible electronic and spintronic devices.
