Anomalous Electronic Anisotropy Triggered by Ferroelastic Coupling in Multiferroic Heterostructures

被引：21

作者：

Ju, Changcheng ^{[1
]}

Yang, Jan-Chi ^{[2
]}

Luo, Cheng ^{[3
]}

Shafer, Padraic ^{[4
]}

Liu, Heng-Jui ^{[2
]}

Huang, Yen-Lin ^{[2
]}

Kuo, Ho-Hung ^{[2
]}

Xue, Fei ^{[5
]}

Luo, Chih-Wei ^{[3
]}

He, Qing ^{[6
]}

Yu, Pu ^{[7
,8
]}

Arenholz, Elke ^{[4
]}

Chen, Long-Qing ^{[5
]}

Zhu, Jinsong ^{[1
]}

Lu, Xiaomei ^{[1
]}

Chu, Ying-Hao ^{[2
]}

机构：

[1] Nanjing Univ, Ctr Adv Microstruct, Sch Phys & Collaborat Innovat, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China

[2] Natl Chiao Tung Univ, Dept Mat Sci & Engn, Hsinchu 30010, Taiwan

[3] Natl Chiao Tung Univ, Dept Electrophys, Hsinchu 30010, Taiwan

[4] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA

[5] Penn State Univ, Dept Mat & Engn, University Pk, PA 16802 USA

[6] Univ Durham, Dept Phys, Durham DH1 3LE, England

[7] Tsinghua Univ, Dept Phys, State Key Lab Low Dimens Quantum Phys, Beijing 100084, Peoples R China

[8] Collaborat Innovat Ctr Quantum Matter, Beijing 100084, Peoples R China

来源：

ADVANCED MATERIALS | 2016年 / 28卷 / 05期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

electronic anisotropy; ferroelastic strain coupling; multiferroic heterostructures; STRUCTURAL PHASE-DIAGRAM; COLOSSAL MAGNETORESISTANCE; DOMAIN-WALLS; TRANSITIONS; TRANSPORT; STRAIN;

D O I：

10.1002/adma.201502743

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The ferroelastic strain coupling is predicted in perovskite heterostructures by phase-field modeling and evidence the coupling by X-ray diffraction and soft X-ray scattering. By controlling both substrate and electrostatic boundary conditions, the solid control of 109° or 71°-type periodic domain structures has been demonstrated. The 71° BFO domain structures were grown on SrRuO3(SRO)-buffered (110) DyScO3(DSO) substrates by pulsed laser deposition at 720 °C with 100 mTorr oxygen and then the LSMO thin film were in situ deposited on BFO with 200 mTorr oxygen. The morphology and ferroelectric domain structure of 71° striped BiFeO3 (BFO) ferroelectric domains and La0.7Sr0.3MnO3 (LSMO) layers were mapped via PFM mode in Multimode VIII. The ferroelastic domain walls could modulate the strain variance in LSMO, leading to large anisotropic resistivity and even the coexistence of different transport states. These findings can be utilized to establish new multifunctional devices in other strongly correlated systems, involving the anisotropy of superconductivity, Hall effects, nonlinear optics, and other emergent behaviors.

引用

页码：876 / 883

页数：8

共 47 条

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