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The intrinsic lattice thermal conductivity of MoS$_2$ is an important aspect in the design of MoS$_2$-based nanoelectronic devices. We investigate the lattice dynamics properties of MoS$_2$ by first principles calculations. The intrinsic…

材料科学 · 物理学 2016-06-23 Bo Peng , Hao Zhang , Hezhu Shao , Yuanfeng Xu , Xiangchao Zhang , Heyuan Zhu

Single layer molybdenum disulfide (SLMoS2), a semiconductor possesses intrinsic bandgap and high electron mobility, has attracted great attention due to its unique electronic, optical, mechanical and thermal properties. Although thermal…

介观与纳米尺度物理 · 物理学 2019-06-14 Han Meng , Dengke Ma , Xiaoxiang Yu , Lifa Zhang , Zhijia Sun , Nuo Yang

Two-dimensional transition metal dichalcogenides (TMDCs) are finding promising electronic and optical applications due to their unique properties. In this letter, we systematically study the phonon transport and thermal conductivity of…

材料科学 · 物理学 2014-09-30 Xiaokun Gu , Ronggui Yang

For conventional materials, the thermal conductivity of thin film is usually suppressed when the thickness decreases due to phonon-boundary scattering. However, this is not necessarily true for the van der Waals solids if the thickness is…

材料科学 · 物理学 2016-03-01 Xiaokun Gu , Baowen Li , Ronggui Yang

Phonons are essential for understanding the thermal properties in monolayer transition metal dichalcogenides, which limit their thermal performance for potential applications. We investigate the lattice dynamics and thermodynamic properties…

介观与纳米尺度物理 · 物理学 2016-02-23 Bo Peng , Hao Zhang , Hezhu Shao , Yuchen Xu , Xiangchao Zhang , Heyuan Zhu

The properties of two-dimensional (2D) materials have been extensively studied and applied in various applications. Our interest is to theoretically investigate the thermal transport and thermoelectric properties of the 2D transition metal…

材料科学 · 物理学 2024-02-16 Radityo Wisesa , Anugrah Azhar , Edi Suprayoga

Modifying phonon thermal conductivity in nanomaterials is important not only for fundamental research but also for practical applications. However, the experiments on tailoring the thermal conductivity in nanoscale, especially in…

The thermoelectric transport coefficients of electrons in two recently emerged transition metal dichalcogenides(TMD), MoS2 and WSe2, are calculated by solving Boltzmann Transport equation and coupled electrical and thermal current equations…

材料科学 · 物理学 2015-10-28 Krishnendu Ghosh , Uttam Singisetti

Two-dimensional (2-D) transition metal dichalcogenides (TMDs) have shown numerous interesting physical and chemical properties, making them promising materials for electronic, optoelectronic, and energy applications. Tuning thermal…

材料科学 · 物理学 2016-09-07 Xiaokun Gu , Ronggui Yang

We report on the temperature dependence of in-plane E2g and out of plane A1g Raman modes in high quality few layers MoS2 (FLMS) prepared using a high temperature vapor-phase method. The materials obtained were investigated using…

介观与纳米尺度物理 · 物理学 2013-05-15 Satyaprakash Sahoo , Anand P. S. Gaur , Majid Ahmadi , Maxime J-F Guinel , Ram S. Katiyar

Recently, three-component new fermions in topological semimetal MoP are experimentally observed, which may have potential applications like topological qubits, low-power electronics and spintronics. These are closely related to thermal…

材料科学 · 物理学 2017-07-04 San-Dong Guo

Over the past few years, there has been a growing interest in layered transition metal dichalcogenides (TMD) such as molybdenum disulfide (MoS2). Most studies so far have focused on the electronic and optoelectronic properties of…

介观与纳米尺度物理 · 物理学 2016-10-03 Morteza Kayyalha , Jesse Maassen , Mark Lundstrom , Li Shi , Yong P. Chen

Transition Metal Dichalcogenide (TMD) monolayers have most widely studied due to their unique physical properties. Recently, Janus TMD Monolayer MoSSe with sandwiched S-Mo-Se structure has been synthesized by replacing the top S atomic…

材料科学 · 物理学 2018-04-04 San-Dong Guo

With the miniaturization and integration of nanoelectronic devices, efficient heat removal becomes a key factor affecting the reliable operation of the nanoelectronic device. With the high intrinsic thermal conductivity, good mechanical…

材料科学 · 物理学 2022-02-16 Chen Shen , Lei Wang , Donghai Wei , Yixuan Zhang , Guangzhao Qin , Xing-Qiu Chen , Hongbin Zhang

State-of-the-art fabrication and characterization techniques have been employed to measure the thermal conductivity of suspended, single-crystalline MoS2 and MoS2/hBN heterostructures. Two-laser Raman scattering thermometry was used…

Recently, $\mathrm{BaSn_2}$ is predicted to be a strong topological insulator by the first-principle calculations. It is well known that topological insulator has a close connection to thermoelectric material, such as $\mathrm{Bi_2Te_3}$…

材料科学 · 物理学 2016-12-21 San-Dong Guo , Liang Qiu

By using a first-principles approach, monolayer PbI$_2$ is found to have great potential in thermoelectric applications. The linear Boltzmann transport equation is applied to obtain the perturbation to the electron distribution by different…

材料科学 · 物理学 2021-05-24 Bo Peng , Haodong Mei , Hao Zhang , Hezhu Shao , Ke Xu , Gang Ni , Qingyuan Jin , Costas M. Soukoulis , Heyuan Zhu

Ultrathin layers of semiconducting molybdenum disulfide (MoS2) offer significant prospects in future electronic and optoelectronic applications. Although an increasing number of experiments bring light into the electronic transport…

介观与纳米尺度物理 · 物理学 2014-07-10 Jing Wu , Hennrik Schmidt , Amara Kiran Kumar , Xiangfan Xu , Goki Eda , Barbaros Özyilmaz

The increase of a thermoelectric material's figure of merit (ZT value) is limited by the interplay of the transport coefficients. Here we report the greatly enhanced thermoelectric performance of a ZrS2 monolayer by the biaxial tensile…

介观与纳米尺度物理 · 物理学 2016-07-14 H. Y. Lv , W. J. Lu , D. F. Shao , H. Y. Lu , Y. P. Sun

Thermal transport in single layer molybdenum disulfide (MoS2) is critical to advancing its applications. In this paper, we use molecular dynamics (MD) simulations with first-principles force constants to study the isotope effect on the…

材料科学 · 物理学 2015-10-06 Xufei Wu , Nuo Yang , Tengfei Luo
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