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DC Field | Value | Language |
---|---|---|
dc.citation.number | 17 | - |
dc.citation.startPage | 174426 | - |
dc.citation.title | PHYSICAL REVIEW B | - |
dc.citation.volume | 88 | - |
dc.contributor.author | Lee, JunHee | - |
dc.contributor.author | Delaney, Kris T. | - |
dc.contributor.author | Bousquet, Eric | - |
dc.contributor.author | Spaldin, Nicola A. | - |
dc.contributor.author | Rabe, Karin M. | - |
dc.date.accessioned | 2023-12-22T03:13:26Z | - |
dc.date.available | 2023-12-22T03:13:26Z | - |
dc.date.created | 2016-02-13 | - |
dc.date.issued | 2013-11 | - |
dc.description.abstract | First-principles calculations reveal a large cooperative coupling of Jahn-Teller (JT) distortion to oxygen-octahedron rotations in perovskite LaMnO3. The combination of the two distortions is responsible for stabilizing the strongly orthorhombic A-AFM insulating (I) ePbnm ground state relative to a metallic ferromagnetic (FM-M) phase. However, epitaxial strain due to coherent matching to a crystalline substrate can change the relative stability of the two states. In particular, coherent matching to a square-lattice substrate favors the less orthorhombic FM-M phase, with the A-AFM phase stabilized at higher values of tensile epitaxial strain due to its larger volume per formula unit, resulting in a coupled magnetic and metal-insulator transition at a critical strain close to 1%. At the phase boundary, a very large magnetoresistance is expected. Tensile epitaxial strain enhances the JT distortion and opens the band gap in the A-AFM-I c-ePbnm phase, offering the opportunity for band-gap engineering. Compressive epitaxial strain induces a transition within the FM-M phase from the c-ePbnm orientation to the ab-ePbnm orientation with a change in the direction of the magnetic easy axis relative to the substrate, yielding strain-controlled magnetization at the phase boundary. Similar behavior is expected in other JT active Pbnm perovskites | - |
dc.identifier.bibliographicCitation | PHYSICAL REVIEW B, v.88, no.17, pp.174426 | - |
dc.identifier.doi | 10.1103/PhysRevB.88.174426 | - |
dc.identifier.issn | 2469-9950 | - |
dc.identifier.scopusid | 2-s2.0-84890412145 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/18599 | - |
dc.identifier.url | http://journals.aps.org/prb/abstract/10.1103/PhysRevB.88.174426 | - |
dc.identifier.wosid | 000327933500005 | - |
dc.language | 영어 | - |
dc.publisher | AMER PHYSICAL SOC | - |
dc.title | Strong coupling of Jahn-Teller distortion to oxygen-octahedron rotation and functional properties in epitaxially strained orthorhombic LaMnO3 | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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