Probing Magnetism in Exfoliated VI 3 Layers with Magnetotransport.

Autor:	Soler-Delgado D; Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland.; Department of Applied Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland., Yao F; Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland.; Department of Applied Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland., Dumcenco D; Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland., Giannini E; Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland., Li J; Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States., Occhialini CA; Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States., Comin R; Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States., Ubrig N; Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland.; Department of Applied Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland., Morpurgo AF; Department of Quantum Matter Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland.; Department of Applied Physics, University of Geneva, 24 Quai Ernest Ansermet, CH-1211 Geneva, Switzerland.
Jazyk:	angličtina
Zdroj:	Nano letters [Nano Lett] 2022 Aug 10; Vol. 22 (15), pp. 6149-6155. Date of Electronic Publication: 2022 Jul 22.
DOI:	10.1021/acs.nanolett.2c01361
Abstrakt:	We perform magnetotransport experiments on VI 3 multilayers to investigate the relation between ferromagnetism in bulk and in exfoliated layers. The magnetoconductance measured on field-effect transistors and tunnel barriers shows that the Curie temperature of exfoliated multilayers is T C = 57 K, larger than in bulk ( T C,bulk = 50 K). Below T ≈ 40 K, we observe an unusual evolution of the tunneling magnetoconductance, analogous to the phenomenology observed in bulk. Comparing the magnetoconductance measured for fields applied in- or out-of-plane corroborates the analogy, allows us to determine that the orientation of the eas y -axis in multilayers is similar to that in bulk, and suggests that the in-plane component of the magnetization points in different directions in different layers. Besides establishing that the magnetic state of bulk and multilayers are similar, our experiments illustrate the complementarity of magnetotransport and magneto-optical measurements to probe magnetism in 2D materials.
Databáze:	MEDLINE
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