Magnetic and transport properties of Mn2CoAl oriented thin films

Michelle E. Jamer; Badih A. Assaf; Trithep Devakul; Don Heiman

doi:10.1063/1.4823601

Magnetic and transport properties of Mn2CoAl oriented thin films

Materials Science 2013-10-01 v1

Authors: Michelle E. Jamer , Badih A. Assaf , Trithep Devakul , Don Heiman

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Abstract

The structure, magnetic and transport properties of thin films of the Heusler ferrimagnet Mn_{2}CoAl have been investigated for properties related to spin gapless semiconductors. Oriented films were grown by molecular beam epitaxy on GaAs substrates and the structure was found to transform from tetragonal to cubic for increasing annealing temperature. The anomalous Hall resistivity is found to be proportional to the square of the longitudinal resistivity and magnetization expected for a topological Berry curvature origin. A delicate balance of the spin-polarized carrier type when coupled with voltage gate-tuning could significantly impact advanced electronic devices.

Keywords

Mn2CoAl Heusler ferrimagnet thin films spin gapless semiconductors molecular beam epitaxy anomalous Hall resistivity Berry curvature transport properties

Cite

@article{arxiv.1309.6660,
  title  = {Magnetic and transport properties of Mn2CoAl oriented thin films},
  author = {Michelle E. Jamer and Badih A. Assaf and Trithep Devakul and Don Heiman},
  journal= {arXiv preprint arXiv:1309.6660},
  year   = {2013}
}

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