Uniaxial strain-modulated conductivity in manganite superlattice (LaMnO3/ SrMnO3)

Dan Cao, Meng Qiu Cai, Wang Yu Hu, Jun Peng, Yue Zheng, Haitao Huang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

37 Citations (Scopus)

Abstract

We have investigated the magnetic ordering and electrical conductivity transitions of (LaMnO3)2/ (SrMnO3)2superlattices grown on SrTiO3substrate based on density-functional theory. It is found that the uniaxial tensile strain along the z axis of about 1.4% induced a magnetic transition from antiferromagnetic to ferromagnetic ordering. At the interface the orbital order changes from a combination of x2- y2and 3 z2- r2to x2- y2as strain becomes more compressive; as a result the electrical transport is transformed from three-dimensions to two-dimensions at the high uniaxial compressive strain. Our results suggest that the out-of-plane electrical conductivity can be modulated and controlled by uniaxial strain.
Original languageEnglish
Article number031910
JournalApplied Physics Letters
Volume98
Issue number3
DOIs
Publication statusPublished - 17 Jan 2011

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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