Induced magnetoelectric response in Pnma perovkites

Eric Bousquet; Nicola Spaldin

doi:10.1103/PhysRevLett.107.197603

Induced magnetoelectric response in Pnma perovkites

Materials Science 2015-05-30 v1

Authors: Eric Bousquet , Nicola Spaldin

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Abstract

We use symmetry analysis to show that the G, C and A-type antiferromagnetic Pnma perovskites can exhibit magnetoelectric (ME) responses when a ferroelectric instability is induced with epitaxial strain. Using first-principles calculations we compute the values of the allowed ME response in strained CaMnO3 as a model system. Our results show that large linear and non-linear ME responses are present and can diverge when close to the ferroelectric phase transition. By decomposing the electronic and ionic contributions, we explore the detailed mechanism of the ME response.

Keywords

Pnma perovskites magnetoelectric response epitaxial strain ferroelectric instability first-principles calculations antiferromagnetic

Cite

@article{arxiv.1108.6073,
  title  = {Induced magnetoelectric response in Pnma perovkites},
  author = {Eric Bousquet and Nicola Spaldin},
  journal= {arXiv preprint arXiv:1108.6073},
  year   = {2015}
}

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