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In this letter, we report on the theoretical investigations of electron mobility in practically viable designs of InxGa1-xN channel high electron mobility transistors (HEMT). Carriers in such devices are expected to exhibit a higher…

Materials Science · Physics 2015-04-17 Vikash K. Singh , Digbijoy N. Nath

Based on first-principles calculations, we demonstrate that 1H/2H-phase transition metal dichalcogenides MX2 (M=Nb,Ta; X=S,Se,Te) are unconventional metals, which have an empty-site band of $A_1'@1e$ elementary band representation at the…

Materials Science · Physics 2026-02-09 Zhilong Yang , Haohao Sheng , Zhaopeng Guo , Ruihan Zhang , Quansheng Wu , Hongming Weng , Zhong Fang , Zhijun Wang

Molybdenum disulfide (MoS2) nanosheet, one of two dimensional (2D) semiconductors, has recently been regarded as a promising material to break through the limit of present semiconductors including graphene. However, its potential in carrier…

Mesoscale and Nanoscale Physics · Physics 2014-06-27 Hee Sung Lee , Seung Su Baik , Sung-Wook Min , Pyo Jin Jeon , Jin Sung Kim , Kyujin Choi , Sunmin Ryu , Hyoung Joon Choi , Jae Hoon Kim , Seongil Im

High-mobility layered semiconductors have the potential to enable the next-generation electronics and computing. This paper demonstrates that the ultrahigh electron mobility observed in the layered semiconductor Bi$_2$O$_2$Se originates…

Materials Science · Physics 2022-03-29 Ziye Zhu , Xiaoping Yao , Shu Zhao , Xiao Lin , Wenbin Li

The coupling of optical and electronic degrees of freedom together with quantum confinement in low-dimensional electron systems is particularly interesting for achieving exotic functionalities in strongly correlated oxide electronics.…

Platinum diselenide (PtSe2) is an exciting new member of the two-dimensional (2D) transition metal dichalcogenide (TMD) family. it has a semimetal to semiconductor transition when approaching monolayer thickness and has already shown…

Two-dimensional superconductors attract great interest both for their fundamental physics and for their potential applications, especially in the rapidly growing field of quantum computing. Despite intense theoretical and experimental…

Superconductivity · Physics 2021-05-12 Davide Campi , Simran Kumari , Nicola Marzari

We study the transport properties of monolayer MX2 (M = Mo, W; X = S, Se, Te) n- and p- channel metal-oxide-semiconductor field effect transistors (MOSFETs) using full-band ballistic non-equilibrium Green's function simulations with an…

Mesoscale and Nanoscale Physics · Physics 2014-02-28 Jiwon Chang , Leonard F. Register , Sanjay K. Banerjee

Two-dimensional materials are of interest for their exotic properties, for example, superconductivity, and highly tunability. Focusing on phonon-mediating superconductivity, one would propose to promote critical temperature by substituting…

Superconductivity · Physics 2024-05-22 Haomin Fei , Ping Cui , Zhenyu Zhang

The low-field electron mobility in rectangular silicon nanowire (SiNW) transistors was computed using a self-consistent Poisson-Schr\"{o}dinger-Monte Carlo solver. The behavior of the phonon-limited and surface-roughness-limited components…

Materials Science · Physics 2016-11-17 E. B. Ramayya , D. Vasileska , S. M. Goodnick , I. Knezevic

We carry out a systematic study of the thermal conductivity of four single-layer transition metal dichalcogenides, MX$_2$ (M = Mo, W; X = S, Se) from first-principles by solving the Boltzmann Transport Equation (BTE). We compare three…

Materials Science · Physics 2019-03-29 Pol Torres , Francesc Xavier Alvarez , Xavier Cartoixà , Riccardo Rurali

The production of new sensors, transducers and electronic components can benefit from the possibility to alter the electronic transport of metal-semicondutor-metal (MSM) devices. 2D materials are extremely appealing for those new…

Materials Science · Physics 2018-07-04 Igor Neri , Miquel López-Suárez

Through first-principles calculations, the phonon-limited transport properties of cubic boron-V compounds (BP, BAs and BSb) are studied. We find that the high optical phonon frequency in these compounds leads to the substantial suppression…

Materials Science · Physics 2018-09-26 Te-Huan Liu , Bai Song , Laureen Meroueh , Zhiwei Ding , Qichen Song , Jiawei Zhou , Mingda Li , Gang Chen

This paper presents an ab initio methodology to account for electron-phonon interactions in 2D materials, focusing on transition metal dichalcogenides (TMDCs). It combines density functional theory and maximally localized Wannier functions…

Mesoscale and Nanoscale Physics · Physics 2023-12-04 Jonathan Backman , Youseung Lee , Mathieu Luisier

We report on the temperature dependence of the mobility, $\mu$, of the two-dimensional electron gas in a variable density AlGaN/GaN field effect transistor, with carrier densities ranging from 0.4$\times10^{12}$ cm$^{-2}$ to…

The carrier mobility of anisotropic two-dimensional (2D) semiconductors under longitudinal acoustic (LA) phonon scattering was theoretically studied with the deformation potential theory. Based on Boltzmann equation with relaxation time…

Computational Physics · Physics 2016-12-28 Haifeng Lang , Shuqing Zhang , Zhirong Liu

In the quest of new thermoelectric (TE) materials with high power factors, full-Heusler compounds having flat band are found to be promising candidates. In this direction, Fe$_{2}$ScX (X=P,As,Sb) compounds are investigated using mBJ for the…

Strongly Correlated Electrons · Physics 2019-12-30 Shivprasad S. Shastri , Sudhir K. Pandey

We have investigated the electron mobility on field-effect transistors based on PDIF-CN$_{2}$ single crystals. The family of the small molecules PDI8-CN$_{2}$ has been chosen for the promising results obtained for vapour-deposited thin film…

Materials Science · Physics 2009-02-06 Anna S. Molinari , Helena Alves , Zhihua Chen , Antonio Facchetti , Alberto F. Morpurgo

Bi$_2$O$_2$Se is an emerging high-performance layered semiconductor with excellent stability. While experimental studies have explored carrier transport across various doping levels for both $n$-type and $p$-type conduction, a comprehensive…

Materials Science · Physics 2026-01-15 Yubo Yuan , Ziye Zhu , Jiaming Hu , Wenbin Li

Single- and few-layer transition metal dichalcogenides have recently emerged as a new family of layered crystals with great interest, not only from the fundamental point of view, but also because of their potential application in ultrathin…

Materials Science · Physics 2014-10-14 R. Roldán , J. A. Silva-Guillén , M. P. López-Sancho , F. Guinea , E. Cappelluti , P. Ordejón