Abstract

The effects of the in-plane strain on the orbital and magnetic properties of LaMnO3 thin films are calculated using an elastic energy expression and a tight-binding Hamiltonian with electron–lattice coupling. Tensile uniaxial strain of the order of 2%, which is the order of magnitude of those induced in thin films by lattice mismatch with substrates, is found to change the orbital state and magnetic ground state significantly.

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