Antiferromagnetic Tunnel Junctions for Spintronics

Autor:	Shao, Ding-Fu, Tsymbal, Evgeny Y.
Rok vydání:	2023
Předmět:	Condensed Matter - Materials Science Condensed Matter - Mesoscale and Nanoscale Physics Physics - Applied Physics
Zdroj:	npj Spintronics 2, 13 (2024)
Druh dokumentu:	Working Paper
DOI:	10.1038/s44306-024-00014-7
Popis:	Antiferromagnetic (AFM) spintronics has emerged as a subfield of spintronics, where an AFM N\'eel vector is used as a state variable. Efficient electric control and detection of the N\'eel vector are critical for spintronic applications. This review article features fundamental properties of AFM tunnel junctions (AFMTJs) as spintronic devices where such electric control and detection can be realized. We emphasize critical requirements for observing a large tunneling magnetoresistance (TMR) effect in AFMTJs with collinear and noncollinear AFM electrodes, such as a momentum-dependent spin polarization and N\'eel spin currents. We further discuss spin torques in AFMTJs that are capable of N\'eel vector switching. Overall, AFMTJs have potential to become a new standard for spintronics providing larger magnetoresistive effects, few orders of magnitude faster switching speed, and much higher packing density than conventional magnetic tunnel junctions (MTJs). Comment: An invited review for recent progress of antiferromagnetic tunnel junctions
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2312.13507 Zobrazit plný text záznamu View this record from Arxiv