The 81st JSAP Autumn Meeting, 2020

Presentation information

Oral presentation

CS Code-sharing session » 【CS.4】 Code-sharing Session of 4.5 & 17

[8a-Z23-1~10] 【CS.4】 Code-sharing Session of 4.5 & 17

Tue. Sep 8, 2020 9:00 AM - 12:30 PM Z23

Kazunari Matsuda(Kyoto Univ.)

9:30 AM - 9:45 AM

[8a-Z23-2] Magnetic proximity effects in graphene/chromia heterostructures

〇(D)keke he1, Ather Mahmood2, Will Echtenkamp2, Chun-Pui Kwan1, Michael Randle1, Chinmoy Saha1, Peter Dowben2, Christian Binek2, Uttam Singisetti1, Jonathan Bird1 (1.Univ. at Buffalo, 2.Univ. of Nebraska-Lincoln)

Keywords:magnetic proximity effect, graphene, magnetoelectrics

In our study, we have investigated the signatures of spin transport in heterostructures formed from CVD-graphene and chromia (Cr2O3). Chromia is an insulating magneto-electric, exhibiting antiferromagnetic character in bulk up to an elevated Neel temperature of 307 K. Recently, however, it has been demonstrated that the (0001) surface of this material exhibits the phenomenon of boundary magnetism. The magneto-electric nature of the chromia allows the direction of the net magnetism at this surface to be reversed electrically, by application of an appropriate voltage in the simultaneous presence of magnetic field and with low power dissipation. As a substrate, chromia offers room-temperature control of magnetic proximity effects in graphene, in marked contrast to previously reported ferromagnetic insulators.