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Applied Physics Letters / Volume 97 / Issue 18 / NANOSCALE SCIENCE AND DESIGN

Appl. Phys. Lett. 97, 183113 (2010); http://dx.doi.org/10.1063/1.3511684 (3 pages)

The interface of the ferromagnetic metal CoS2 and the nonmagnetic semiconductor FeS2

S. Nazir and U. Schwingenschlögl

Physical Science & Engineering Division, KAUST, Thuwal 23955-6900, Kingdom of Saudi Arabia

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(Received 16 August 2010; accepted 15 October 2010; published online 5 November 2010)

The electronic and magnetic properties of the cubic pyrite CoS2/FeS2 interface are studied using the all-electron full-potential linearized augmented plane wave method. We find that this contact between a ferromagnetic metal and a nonmagnetic semiconductor shows a metallic character. The CoS2 stays close to half-metallicity at the interface, while the FeS2 becomes metallic. The magnetic moment of the Co atoms at the interface slightly decreases as compared to the bulk value and a small moment is induced on the Fe atoms. Furthermore, at the interface ferromagnetic ordering is found to be energetically favorable as compared to antiferromagnetic ordering.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

antiferromagnetic materials, APW calculations, cobalt compounds, ferromagnetic materials, interface magnetism, interface states, iron compounds, magnetic moments, semiconductor materials, semiconductor-insulator boundaries

PACS

  • 75.70.Cn

    Magnetic properties of interfaces (multilayers, superlattices, heterostructures)

  • 73.20.At

    Surface states, band structure, electron density of states

  • 75.30.Cr

    Saturation moments and magnetic susceptibilities

  • 75.50.Ee

    Antiferromagnetics

  • 75.50.Dd

    Nonmetallic ferromagnetic materials

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3511684

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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