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Storing magnetic information in IrMn/MgO/Ta tunnel junctions via field-cooling

nomagneticmoment

D. Petti, E. Albisetti, H. Reichlová, J. Gazquez, M. Varela, M. Molina-Ruiz, A. F. Lopeandía, K. Olejník, V. Novák, I. Fina, B. Dkhil, J. Hayakawa, X. Marti, J. Wunderlich, T. Jungwirth, and R. Bertacco


http://dx.doi.org/10.1063/1.4804429

 


In Ta/MgO/IrMn tunneling junctions, containing no ferromagnetic elements, distinct metastable resistance states has been settled, meaning a magnetic memory with 0 net magnetic moment. These metastable states are therefore insensitive to external magnetic fields (tested up to 2 T), thus constituting an absolutely shielded memory.

 

 

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