Skip to Main content Skip to Navigation
Journal articles

Spin-dependent transport in antiferromagnetic tunnel junctions

Abstract : We investigate the behaviour of spin transfer torque (STT) and tunnelling magnetoresistance (TMR) in epitaxial antiferromagnetic-based tunnel junctions using tight binding calculations in the framework of the Keldysh formalism. We find that the STT out-of-plane component exhibits a staggered spatial distribution similar to its in-plane component. This behaviour is specific to the use of a tunnel barrier and significantly differs from the out-of-plane torques reported in previous works using a metallic spacer. Additionally, we show that unlike conventional ferromagnetic-based tunnel junctions, the TMR can increase with applied bias and reach values comparable to typical magnetoresistances found for usual spin valves.
Document type :
Journal articles
Complete list of metadata

Cited literature [26 references]  Display  Hide  Download
Contributor : Vincent Baltz <>
Submitted on : Sunday, May 19, 2019 - 6:08:30 PM
Last modification on : Wednesday, November 4, 2020 - 3:10:22 PM


Publisher files allowed on an open archive




P. Merodio, A. Kalitsov, H. Béa, Vincent Baltz, M. Chshiev. Spin-dependent transport in antiferromagnetic tunnel junctions. Applied Physics Letters, American Institute of Physics, 2014, 105, pp.122403. ⟨10.1063/1.4896291⟩. ⟨hal-01683647⟩



Record views


Files downloads