2020年第81回応用物理学会秋季学術講演会

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CS コードシェアセッション » 【CS.4】 4.5 Nanocarbon and 2D Materialsと17 ナノカーボンのコードシェアセッション

[8a-Z23-1~10] 【CS.4】 4.5 Nanocarbon and 2D Materialsと17 ナノカーボンのコードシェアセッション

2020年9月8日(火) 09:00 〜 12:30 Z23

松田 一成(京大)

09:30 〜 09:45

[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)

キーワード: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.