All-optical switching of magnetoresistive devices using telecom-band femtosecond laser

Journal Article · Mon Sep 07 00:00:00 EDT 2015 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4930823· OSTI ID:22482039

He, Li; Chen, Jun-Yang; Wang, Jian-Ping; Li, Mo ^[1]

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1. Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455 (United States)

Ultrafast all-optical switching of the magnetization of various magnetic systems is an intriguing phenomenon that can have tremendous impact on information storage and processing. Here, we demonstrate all-optical switching of GdFeCo alloy films using a telecom-band femtosecond fiber laser. We further fabricate Hall cross devices and electrically readout all-optical switching by measuring anomalous Hall voltage changes. The use of a telecom laser and the demonstrated all-optical switching of magnetoresistive devices represent the first step toward integration of opto-magnetic devices with mainstream photonic devices to enable novel optical and spintronic functionalities.

• OSTI ID: 22482039
• Journal Information: Applied Physics Letters, Vol. 107, Issue 10; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALLOYS
DATA PROCESSING
ELECTRIC POTENTIAL
EQUIPMENT
FIBERS
FILMS
INFORMATION
LASERS
MAGNETIZATION
MAGNETORESISTANCE
READOUT SYSTEMS