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Prediction of Absolute Hall Effect Sensitivity and Minimum Magnetic Resolution for Two-Dimensional Rhenium Disulfide Multilayer Magnetic Sensors without Magnetic Fields
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논문 기본 정보

Type
Academic journal
Author
Min-Kyu Joo (Sookmyung Women’s University)
Journal
The Korean Vacuum Society Applied Science and Convergence Technology Vol.32 No.2 KCI Excellent Accredited Journal SCOPUS
Published
2023.3
Pages
41 - 44 (4page)

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Prediction of Absolute Hall Effect Sensitivity and Minimum Magnetic Resolution for Two-Dimensional Rhenium Disulfide Multilayer Magnetic Sensors without Magnetic Fields
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Abstract· Keywords

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Absolute Hall-effect sensitivity (S<SUB>A</SUB>) and minimum magnetic resolution (B<SUB>min</SUB>) of two-dimensional (2D) van der Waals Hall elements are predicted without magnetic fields by considering the drain voltage-dependent transconductance and current power spectrum density (PSD). The measured drain-bias-dependent PSD of rhenium disulfide multilayers is suitably described by the carrier number fluctuation noise model, indicating that the effects of carrier trapping/de-trapping into oxide traps dominate the observed current variations. To achieve high current-normalized Hall sensitivity and S<SUB>A</SUB> with a low B<SUB>min</SUB> at a specific current value, the contact resistance and oxide trap density should be further optimized. Our discussion provides an effective approach for the optimization of 2D multilayer-based Hall elements.
#Two-dimensional materials #Hall sensor #Magnetic resolution #Analytical model #Contact resistance #Carrier mobility

Contents

ABSTRACT
1. Introduction
2. Experimental details
3. Results and discussion
4. Conclusions
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