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arXiv · 2412.06051

Layer Dependent Thermal Transport Properties of One- to Three-Layer Magnetic Fe:MoS2

Elham Easy·Mengqi Fang·Mingxing Li·Eui-Hyeok Yang·Xian Zhang
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Abstract

Two-Dimensional (2D) transition metal dichalcogenides (TMDs) have been the subject of extensive attention thanks to their unique properties and atomically thin structure. Because of its unprecedented room-temperature magnetic properties, iron-doped MoS2 (Fe:MoS2) is considered the next-generation quantum and magnetic material. It is essential to understand Fe:MoS2's thermal behavior since temperature and thermal load/activation are crucial for their magnetic properties and the current nano and quantum devices have been severely limited by thermal management. In this work, Fe:MoS2 is synthesized by doping Fe atoms into MoS2 using the chemical vapor deposition (CVD) synthesis and a refined version of opto-thermal Raman technique is used to study the thermal transport properties of Fe:MoS2 in the forms of single (1L), bilayer (2L), and tri-layer (3L). In the Opto-thermal Raman technique, a laser is focused on the center of a thin film and used to measure the peak position of a Raman-active mode. The lateral thermal conductivity of 1-3L of Fe:MoS2 and the interfacial thermal conductance between Fe:MoS2 and the substrate were obtained by analyzing the temperature-dependent and power-dependent Raman measurement, laser power absorption coefficient, and laser spot sizes. We also characterized Fe:MoS2's thermal transport at high temperature, and calculated Fe:MoS2's thermal transport by density theory function. These findings will shed light on the thermal management and thermoelectric designs for Fe:MoS2 based nano and quantum electronic devices.

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Elham Easy, Mengqi Fang, Mingxing Li, Eui-Hyeok Yang, Xian Zhang. 2024-12-08. Layer Dependent Thermal Transport Properties of One- to Three-Layer Magnetic Fe:MoS2. https://arxiv.org/abs/2412.06051

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