Uniaxial Strain and Hydrostatic Pressure Engineering of the Hidden Magnetism in La1–xCaxMnO3 (0 ≤ x ≤ 1/2) Thin Films

• DOI: 10.1021/acs.nanolett.2c01352
• Publication Date: 2022-09-06T17:45:50Z
• Authors: Zixun Zhang; Jifeng Shao; Feng Jin; Kunjie Dai; Jingyuan Li; Da Lan; Enda Hua; Yuyan Han; Long Wei; Feng Cheng; Binghui Ge; Lingfei Wang; Yue Zhao; Wenbin Wu
• Keywords: Strain engineering; Hydrostatic pressure; Magnetism; Hydrostatic equilibrium; Strain (injury)

Here, using various substrates, we demonstrate that the in-plane uniaxial strain engineering can enhance Jahn-Teller distortions and promote selective orbital occupancy to induce an emergent antiferromagnetic insulating (AFI) phase at x = 1/3 of La1-xCaxMnO3. Such AFI depends not only on magnitude epitaxial but also symmetry substrates. Using large imparted by DyScO3(001) substrate, ground state is achieved in a wide range doping levels (0 ≤ 1/2), leaving extended diagram. Moreover, it found hydrostatic pressure tune back hidden ferromagnetic metallic phase, accompanied formation accommodation strain. The coaction strain, produces complex competition evolution, result may shed light space control other functional perovskites with competing magnetic interactions.