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http://hdl.handle.net/2445/189821
Title: | Electronic Devices Based on Two-Dimensional Quantum Materials |
Author: | Valero Guillén, David |
Director/Tutor: | Costache, Marius Sierra, Juan F. |
Keywords: | Aparells electrònics Grafè Treballs de fi de grau Electronic apparatus and appliances Graphene Bachelor's theses |
Issue Date: | Feb-2022 |
Abstract: | One of the central problems in graphene spintronics is the efficient injection and detection of spins in mesoscopic devices. To date, most of the studies in graphene spin devices use spin-sensitive contacts of Cobalt for injection and detection. However, due to its magnetic properties, Cobalt is prone to form magnetic domains and inhomogeneities, which makes it hard to control its magnetization orientation. This memoir presents a novel approach for spin injection and detection in graphene by material engineering of the ferromagnetic contacts. We have fabricated spin injector/detector contacts of a bilayer of Cobalt and Permalloy (NiFe). Our results demonstrate that Permalloy softens the magnetization reversal of the Cobalt/Permalloy bilayer while the insertion of a very thin layer of the Cobalt layer is essential for efficient spin injection/detection into graphene |
Note: | Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2022, Tutors: Marius V. Costache, Juan F. Sierra |
URI: | http://hdl.handle.net/2445/189821 |
Appears in Collections: | Treballs Finals de Grau (TFG) - Física |
Files in This Item:
File | Description | Size | Format | |
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VALERO GUILLÉN DAVID_5181455_assignsubmission_file_TFG-Valero-Guillen-David.pdf | 891.47 kB | Adobe PDF | View/Open |
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