Pressure-induced insulator–metal transition in EuMnO3. (21st June 2017)

• Record Type: Journal Article
• Authors: Qiu, R; Bousquet, E; Cano, A
• Is Part Of: Journal of physics. Volume 29:Number 30(2017)
• Publication Date: 2017-06-21
• Subjects: multiferroics -- insulator–metal transition -- first-principles calculations -- rare-earth manganites; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/aa75be
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: We study the influence of external pressure on the electronic and magnetic structure of EuMnO3 from first-principles calculations. We find a pressure-induced insulator–metal transition at which the magnetic order changes from A -type antiferromagnetic to ferromagnetic with a strong interplay with Jahn–Teller distortions. In addition, we find that the non-centrosymmetric E * -type antiferromagnetic order can become nearly degenerate with the ferromagnetic ground state in the high-pressure metallic state. This situation can be exploited to promote a magnetically-driven realization of a non-centrosymmetric (ferroelectric-like) metal.