Large Spin Polarization from symmetry-breaking Antiferromagnets in Antiferromagnetic Tunnel Junctions.

ABSTRACT: Efficient detection of the magnetic state is a critical step towards useful antiferromagnet-based spintronic devices. Recently, finite tunneling magnetoresistance (TMR) has been demonstrated in tunnel junctions with antiferromagnetic electrodes, however, these studies have been mostly limited to junctions with two identical antiferromagnet (AFM) electrodes, where the matching of the spin-split Fermi surfaces played critical role. It remains unclear if AFMs can provide a finite net spin polarization, and hence be used as a spin polarizer or detector. In this work, we experimentally fabricate single-sided antiferromagnetic tunnel junctions consisting of one AFM electrode (Mn₃Sn) and one ferromagnet (FM) electrode (CoFeB), where the spin polarized tunneling transport from AFM is de

SUBMITTER: Chou CT 

PROVIDER: S-EPMC11380680 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature