Tunnel magnetoresistance detection of skyrmions (Final Scientific/Technical Report for Magnon Current Transmission Through Insulators)

Technical Report · Tue Nov 16 04:00:00 EST 2021

DOI:https://doi.org/10.2172/1969937· OSTI ID:1969937

Majetich, Sara A. ^[1]; Chen, Hao ^[2]; Bouckaert, William ^[2]

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1. Carnegie Mellon Univ., Pittsburgh, PA (United States); BES Physical Behavior of Materials
2. Carnegie Mellon Univ., Pittsburgh, PA (United States)

Micromagnetic simulations are used to investigate different strategies for tunnel magnetoresistance detection of the Néel skyrmion core direction and Bloch skyrmion chirality. When a Néel skyrmion passes beneath a perpendicularly magnetized dot separated by a tunnel barrier, a peak or dip in the tunnel magnetoresistance as a function of time shows a peak followed by a dip, or vice versa, depending on the chirality. The results are compared with existing detection methods based on the Hall resistance.

• Research Organization: Carnegie Mellon Univ., Pittsburgh, PA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)
• DOE Contract Number: SC0019237
• OSTI ID: 1969937
• Report Number(s): Final-report-DOE-CMU--0019237
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
Magnetic Tunnel Junction
Magnetoresistance
Racetrack Memory
Skyrmion