Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/143171
Title: In‐plane anisotropic thermal conductivity of few‐layered transition metal dichalcogenide Td‐WTe2
Authors: Chen, Yu
Peng, Bo
Cong, Chunxiao
Shang, Jingzhi
Wu, Lishu
Yang, Weihuang
Zhou, Jiadong
Yu, Peng
Zhang, Hongbo
Wang, Yanlong
Zou, Chenji
Zhang, Jing
Liu, Sheng
Xiong, Qihua
Shao, Hezhu
Liu, Zheng
Zhang, Hao
Huang, Wei
Yu, Ting
Keywords: Science::Physics
Issue Date: 2019
Source: Chen, Y., Peng, B., Cong, C., Shang, J., Wu, L., Yang, W., ... Yu, T. (2019). In‐plane anisotropic thermal conductivity of few‐layered transition metal dichalcogenide Td‐WTe2. Advanced Materials, 31(7), 1804979-. doi:10.1002/adma.201804979
Project: MOE2016-T2-2-153
Journal: Advanced Materials
Abstract: 2D Td‐WTe2 has attracted increasing attention due to its promising applications in spintronic, field‐effect chiral, and high‐efficiency thermoelectric devices. It is known that thermal conductivity plays a crucial role in condensed matter devices, especially in 2D systems where phonons, electrons, and magnons are highly confined and coupled. This work reports the first experimental evidence of in‐plane anisotropic thermal conductivities in suspended Td‐WTe2 samples of different thicknesses, and is also the first demonstration of such anisotropy in 2D transition metal dichalcogenides. The results reveal an obvious anisotropy in the thermal conductivities between the zigzag and armchair axes. The theoretical calculation implies that the in‐plane anisotropy is attributed to the different mean free paths along the two orientations. As thickness decreases, the phonon‐boundary scattering increases faster along the armchair direction, resulting in stronger anisotropy. The findings here are crucial for developing efficient thermal management schemes when engineering thermal‐related applications of a 2D system.
URI: https://hdl.handle.net/10356/143171
ISSN: 1521-4095
DOI: 10.1002/adma.201804979
Rights: This is the peer reviewed version of the following article: Chen, Y., Peng, B., Cong, C., Shang, J., Wu, L., Yang, W., ... Yu, T. (2019). In‐plane anisotropic thermal conductivity of few‐layered transition metal dichalcogenide Td‐WTe2. Advanced Materials, 31(7), 1804979-. doi:10.1002/adma.201804979, which has been published in final form at 10.1002/adma.201804979. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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