Tunable Magnetic Interaction at the Atomic Scale in Oxide Heterostructures

J. W. Seo, W. Prellier, P. Padhan, P. Boullay, J.-Y. Kim, Hangil Lee, C. D. Batista, I. Martin, Elbert E. M. Chia, T. Wu, B.-G. Cho, and C. Panagopoulos

Phys. Rev. Lett. 105, 167206 – Published 14 October 2010

Abstract

We report on a systematic study of a number of structurally identical but chemically distinct transition metal oxides in order to determine how the material-specific properties such as the composition and the strain affect the properties at the interface of heterostructures. Our study considers a series of structures containing two layers of ferromagnetic ${SrRuO}_{3}$ , with antiferromagnetic insulating manganites sandwiched in between. The results demonstrate how to control the strength and relative orientation of interfacial ferromagnetism in correlated electron materials by means of valence state variation and substrate-induced strain, respectively.

Received 20 June 2010

DOI:https://doi.org/10.1103/PhysRevLett.105.167206

Authors & Affiliations

J. W. Seo^1,2, W. Prellier³, P. Padhan^3,4, P. Boullay³, J.-Y. Kim⁵, Hangil Lee^5,6, C. D. Batista⁷, I. Martin⁷, Elbert E. M. Chia², T. Wu², B.-G. Cho⁸, and C. Panagopoulos^1,2,9

¹Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, United Kingdom
²Division of Physics and Applied Physics, Nanyang Technological University, 637371 Singapore
³Laboratoire CRISMAT, CNRS UMR 6508, ENSICAEN, 14050 Caen Cedex, France
⁴Department of Physics, Indian Institute of Technology Madras, Chennai - 600036, India
⁵Pohang Accelerator Laboratory, Pohang 790-784, South Korea
⁶Department of Chemistry, Sookmyung Women’s University, Seoul 140-742, South Korea
⁷Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
⁸Department of Physics, Pohang University of Science and Technology (POSTECH), Pohang 790-784, South Korea
⁹Department of Physics, University of Crete and FORTH, 71003 Heraklion, Greece

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Vol. 105, Iss. 16 — 15 October 2010

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