Epitaxially constrained magnetic ordering in semimetallic SrIrO3 thin films
Source abstract
Abstract
Strain engineering provides a powerful route to inducing striking emergent phenomena in quantum materials, particularly those governed by a delicate interplay between electron correlations and spin–orbit coupling, such as orthorhombic SrIrO3. Here, we report the epitaxial growth of orthorhombic SrIrO3 thin films under systematically controlled tensile strain. A pronounced hysteresis in the magnetoresistance is observed in SrIrO3/TbScO3 films below 40 K, indicating the emergence of long-range magnetic order driven by the epitaxial strain. Further investigations of SrIrO3 films grown on SmScO3 and NdScO3 substrates reveal a substantial enhancement of the magnetic transition temperature up to ∼110 K, demonstrating effective modulation of magnetic ordering. Moreover, first-principles calculations show that the monoclinic distortion facilitates the stabilization of a magnetic ground state. Our work establishes tensile strain and lattice distortion as key ingredients for realizing emergent magnetism in 5d transition metal oxides.
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Research context
OpenAlex topics: Advanced Condensed Matter Physics · Electronic and Structural Properties of Oxides · Magnetic and transport properties of perovskites and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Anhui Provincial Laboratory of Low-Energy Quantum Materials and Devices, High Magnetic Field Laboratory, HFIPS, Chinese Academy of Sciences 1 , Hefei, Anhui 230031,
Science Island Branch of Graduate School, University of Science and Technology of China 2 , Hefei 230026,
School of Microelectronics and Control Engineering, Changzhou University 3 , Changzhou, Jiangsu 213001,
Pohang Accelerator Laboratory, POSTECH 4 , Pohang,
Funding
The National Key Basic Research Program of China · The National Natural Science Foundation of China · The International Partnership Program of the Chinese Academy of Sciences · The Ahhui Provincial Major S&T Project · The Basic Research Program of the Chinese Academy of Sciences Based on Major Scientific Infrastructures · HFIPS Director’s Fund
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