Coupled magnetic–elastic and metal–insulator transition in epitaxially strained SrMnO3/BaMnO3 superlattices. Issue 63 (29th October 2018)

• Record Type: Journal Article
• Authors: Wang, Jin-Feng; Li, Zheng; Zhuang, Zhao-Tong; Zhang, Yan-Ming; Zhang, Jun-Ting
• Is Part Of: RSC advances. Volume 8:Issue 63(2018)
• Page Start: 36407
• Page End: 36411
• Publication Date: 2018-10-29
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c8ra05737k
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : The epitaxial strain can induce interesting physical phase transitions in SrMnO3 /BaMnO3 superlattices. Abstract : The spin–phonon coupling and the effects of strain on the ground-state phases of artificial SrMnO3 /BaMnO3 superlattices were systematically investigated using first-principles calculations. The results confirm that this system has antiferromagnetic order and an intrinsic ferroelectric polarisation with the P 4 mm space group. A tensile epitaxial strain can drive the ground state to another antiferromagnetic–ferroelectric phase and then to a ferromagnetic–ferroelectric phase with the Amm 2 space group, accompanied by a change in the ferroelectric polarisation from an out-of-plane direction to an in-plane direction. In contrast, a compressive strain could induce a transition from the antiferromagnetic insulator phase to the ferromagnetic metal phase.