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Condensed Matter > Mesoscale and Nanoscale Physics
Title: Giant Hall effect in two-dimensional CoSi$_2$ granular arrays
(Submitted on 25 Mar 2024)
Abstract: Granular metals offer tailorable electronic properties and play crucial roles in device and sensor applications. We have fabricated a series of nonmagnetic granular CoSi2 thin films and studied the Hall effect and transport properties. We observed a two orders of magnitude enhancement in the Hall coefficient in films fall slightly above the metal-insulator transition. This giant Hall effect (GHE) is ascribed to the local quantum-interference effect induced reduction of the charge carriers. Transmission electron microscopy images and transport properties indicate that our films form two dimensional granular arrays. The GHE may provide useful and sensitive applications.
Submission history
From: Sheng-Shiuan Yeh [view email][v1] Mon, 25 Mar 2024 08:17:12 GMT (1351kb,D)
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