Li, Yang and Amado, Mario and Hyart, Timo and Mazur, Grzegorz P. and Risinggard, Vetle and Wagner, Thomas and McKenzie-Sell, Lauren and Kimbell, Graham and Wunderlich, Joerg and Linder, Jacob and Robinson, Jason W. A. (2020) Transition between canted antiferromagnetic and spin-polarized ferromagnetic quantum Hall states in graphene on a ferrimagnetic insulator. PHYSICAL REVIEW B, 101 (24): 241405. ISSN 2469-9950, 2469-9969
Full text not available from this repository. (Request a copy)Abstract
In the quantum Hall regime of graphene, antiferromagnetic and spin-polarized ferromagnetic states at the zeroth Landau level compete, leading to a canted antiferromagnetic state depending on the direction and magnitude of an applied magnetic field. Here, we investigate this transition at 2.7 K in graphene Hall bars that are proximity coupled to the ferrimagnetic insulator Y3Fe5O12 . From nonlocal transport measurements, we demonstrate an induced magnetic exchange field in graphene, which lowers the magnetic field required to modulate the magnetic state in graphene. These results show that a magnetic proximity effect in graphene is an important ingredient for the development of two-dimensional materials in which it is desirable for ordered states of matter to be tunable with relatively small applied magnetic fields (>6 T).
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | TRANSPORT; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 22 Mar 2021 12:25 |
| Last Modified: | 22 Mar 2021 12:25 |
| URI: | https://pred.uni-regensburg.de/id/eprint/44495 |
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