Stitching the correlated phenomena in epitaxial manganite homostructures

Yao-Wen Chang^1*, Yu-Chen Liu¹, Shih-Wen Huang², Jia-Yuan Sun³, Sheng-Zhu Ho¹, Chun-Chien Chiu¹, Yu-An Chen¹, Tim A. Butcher², Ludmila Leroy², Cinthia Piamonteze², Armin Kleibert², Yi-Chun Chen¹, Wen-Yen Tzeng³, Chun-Fu Chang^4,5, Chih-Wei Luo³, Chang-Yang Kuo³, Jan-Chi Yang^1,6

¹Department of Physics, National Cheng Kung University, Tainan 70101, Taiwan
²Swiss Light Source, Paul Scherrer Institut, CH5232 Villigen PSI, Switzerland
³Department of Electrophysics, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
⁴Max-Planck Institute for Chemical Physics of Solids, Max-Planck Institute, Dresden 01187, Germany
⁵National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
⁶Center for Quantum Frontiers of Research & Technology (QFort), National Cheng Kung University, Tainan 70101, Taiwan

* Presenter:Yao-Wen Chang, email:stephen900164chung@gmail.com

The demand for high-efficiency electronic devices and the development of transition metal dichalcogenide have given rise to the emerge of homostructure with promising potential. While 2D materials demonstrated vertical stacking and played a crucial role in various fields, lateral homostructures remain underdeveloped. Magnetic properties and spin transportation have mostly been discussed in thin film structured vertically. With freestanding complex oxide thin films, fabrication of lateral homostructures becomes much easier. La_0.7Sr_0.3MnO₃ (LSMO), as a correlated material, has gained attention due to its entangled phenomena. The magnetotransport properties and potential for strain engineering makes LSMO a strong candidate for further exploration. Along the concept of homostructure, weave epitaxy sets up a new approach for strain manipulation. The combination of freestanding thin film and weave epitaxy allows us to create regions with different orientations and strain states. This study of synthesizing LSMO thin film could be the first of its kind for lateral strain engineering homostructure, and the artificially controllable ferromagnetic/metal behavior paves a platform for advanced research in spintronics.

Keywords: Complex Oxide, Homostructure, La_0.7Sr_0.3MnO₃, Freestanding, Strain engineering