Strain-induced ferromagnetism in antiferromagnetic LuMnO₃ thin films

White, J. S.; Bator, M.; Hu, Yanqing; Luetkens, H.; Stahn, J.; Capelli, S.; Das, Saikat; Döbeli, M.; Lippert, Th.; Malik, Vivek Kumar; Martynczuk, J.; Wokaun, A.; Kenzelmann, M.; Niedermayer, Ch.; Schneider, C. W.

doi:10.1103/PhysRevLett.111.037201

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Journal article

Strain-induced ferromagnetism in antiferromagnetic LuMnO₃ thin films

White, J. S. Laboratory for Neutron Scattering, Paul Scherrer Institut, Villigen, Switzerland - Laboratory for Quantum Magnetism, Ecole Polytechnique Fédérale de Lausanne, Switzerland
Bator, M. General Energy Research Department, Paul Scherrer Institut, Villigen, Switzerland
Hu, Yanqing General Energy Research Department, Paul Scherrer Institut, Villigen, Switzerland
Luetkens, H. Laboratory for Muon-Spin Spectroscopy, Paul Scherrer Institut, Villigen, Switzerland
Stahn, J. Laboratory for Neutron Scattering, Paul Scherrer Institut, Villigen, Switzerland
Capelli, S. Institut Laue-Langevin, 6 rue Jules Horowitz, Grenoble, France
Das, Saikat Department of Physics and Fribourg Centre for Nanomaterials, University of Fribourg, Switzerland
Döbeli, M. Labor für Ionenstrahlphysik, ETH Zürich, Switzerland
Lippert, Th. General Energy Research Department, Paul Scherrer Institut, Villigen, Switzerland
Malik, Vivek Kumar Department of Physics and Fribourg Centre for Nanomaterials, University of Fribourg, Switzerland
Martynczuk, J. Electron Microscopy Center of ETH Zürich (EMEZ), ETH Zürich, Switzerland
Wokaun, A. General Energy Research Department, Paul Scherrer Institut, Villigen, Switzerland
Kenzelmann, M. Laboratory for Developments and Methods, Paul Scherrer Institut, Villigen, Switzerland
Niedermayer, Ch. Laboratory for Neutron Scattering, Paul Scherrer Institut, Villigen, Switzerland
Schneider, C. W. General Energy Research Department, Paul Scherrer Institut, Villigen, Switzerland

17.07.2013

Published in:

Physical Review Letters. - 2013, vol. 111, no. 3, p. 037201

English Single phase and strained LuMnO₃ thin films are discovered to display coexisting ferromagnetic and antiferromagnetic orders. A large moment ferromagnetism (≈1μ_B), which is absent in bulk samples, is shown to display a magnetic moment distribution that is peaked at the highly strained substrate-film interface. We further show that the strain-induced ferromagnetism and the antiferromagnetic order are coupled via an exchange field, therefore demonstrating strained rare-earth manganite thin films as promising candidate systems for new multifunctional devices.

Faculty

Faculté des sciences et de médecine

Department

Département de Physique

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