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Related papers: Electron Mobility in Monoclinic \beta-Ga2O3 - Effe…

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By systematically comparing experimental and theoretical transport properties, we identify the polar optical phonon scattering as the dominant mechanism limiting electron mobility in beta-Ga2O3 to lower than 200 cm2/Vs at 300 K for donor…

Materials Science · Physics 2016-11-22 Nan Ma , Nicholas Tanen , Amit Verma , Zhi Guo , Tengfei Luo , Huili , Xing , Debdeep Jena

This paper investigates the mobility of electrons scattering from the coupled system of electrons and longitudinal optical (LO) phonons in n-type GaAs. The Boltzmann equation is solved exactly for low electric fields by an iterative method,…

Condensed Matter · Physics 2016-08-31 B. A. Sanborn

We investigate the structural, electronic, vibrational, power and transport properties of the $\beta$ allotrope of Ga$_2$O$_3$ from first-principles. We find phonon frequencies and elastic constants that reproduce the correct band ordering,…

Materials Science · Physics 2020-07-29 Samuel Poncé , Feliciano Giustino

We calculate the mobility of a two-dimensional electron gas residing at the interface of LaAlO$_{3}$/SrTiO$_{3}$ following a three band Boltzmann approach at low temperature, where carrier-charged impurity scattering process is assumed to…

Mesoscale and Nanoscale Physics · Physics 2016-06-22 A. Faridi , R. Asgari , A. Langari

The intrinsic carrier transport dynamics in phosphorene is theoretically examined. Utilizing a density functional theory treatment, the low-field mobility and the saturation velocity are characterized for both electrons and holes in the…

Mesoscale and Nanoscale Physics · Physics 2016-08-24 Zhenghe Jin , Jeffrey T. Mullen , Ki Wook Kim

$\mathrm{\beta}$-Gallium oxide ($\mathrm{\beta\mbox{-}Ga_{2}O_{3}}$) is an emerging widebandgap semiconductor for potential application in power and RF electronics applications. Initial theoretical calculation on a 2-dimensional electron…

Applied Physics · Physics 2020-03-03 Avinash Kumar , Uttam Singisetti

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

We present density functional theory calculations of the phonon-limited mobility in n-type monolayer graphene, silicene and MoS$_2$. The material properties, including the electron-phonon interaction, are calculated from first-principles.…

Mesoscale and Nanoscale Physics · Physics 2016-01-13 Tue Gunst , Troels Markussen , Kurt Stokbro , Mads Brandbyge

Transport measurements on the two dimensional electron system in Al2O3 SrTiO3 heterostructures indicate significant noncrystalline anisotropic behavior below T = 30 K. Lattice dislocations in SrTiO3 and interfacial steps are suggested to be…

Strongly Correlated Electrons · Physics 2017-08-02 K. Wolff , R. Schäfer , M. Meffert , D. Gerthsen , R. Schneider , D. Fuchs

We derive a dielectric function tensor model approach to render the optical response of monoclinic and triclinic symmetry materials with multiple uncoupled infrared and farinfrared active modes. We apply our model approach to monoclinic…

The anisotropic electron transport in the (001) plane of sublimation-grown Cl$_{2}$-NDI (naphthalene diimide) single crystals is analysed over a temperature range between 175 K and 300 K. Upon cooling from room temperature to 175 K the…

We calculate an electron-phonon scattering and intrinsic transport properties of black phosphorus monolayer using tight-binding and Boltzmann treatments as a function of temperature, carrier density, and electric field. The low-field…

Mesoscale and Nanoscale Physics · Physics 2017-04-12 Yuri Trushkov , Vasili Perebeinos

The semiconducting oxide $\beta$-Gallium Oxide ($\beta$-Ga$_{2}$O$_{3}$) possesses a monoclinic unit cell whose low symmetry generally leads to anisotropic physical properties. For example, its electrical conductivity is generally described…

The electron-phonon interaction and related transport properties are investigated in monolayer silicene and MoS2 by using a density functional theory calculation combined with a full-band Monte Carlo analysis. In the case of silicene, the…

Mesoscale and Nanoscale Physics · Physics 2015-06-12 Xiaodong Li , Jeffrey T. Mullen , Zhenghe Jin , Kostyantyn M. Borysenko , M. Buongiorno Nardelli , Ki Wook Kim

The wide band gap semiconductor \b{eta}-Ga2O3 shows promise for applications in high-power and high-temperature electronics. The phonons of \b{eta}-Ga2O3 play a crucial role in determining its important material characteristics for these…

Materials Science · Physics 2019-02-08 K. A. Mengle , E. Kioupakis

The electron transport in the two-dimensional gas formed in tensile-strained Si1-xGex/Si/Si1-xGex heterostructures is investigated using Monte Carlo simulation. At first the electron mobility is studied in ungated modulation doped…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 F. Monsef , P. Dollfus , S. Galdin-Retailleau , H. -J. Herzog , T. Hackbarth

$\beta$-Gallium Oxide (Ga$_{2}$O$_{3}$) is an extensively investigated ultrawide-bandgap semiconductor for potential applications in power electronics and RF switching. The room temperature bulk electron mobility ($\sim$200…

Materials Science · Physics 2024-06-19 Avinash Kumar , Uttam Singisetti

We report on the temperature dependence of the dielectric tensor elements of $n$-type conductive $\beta$-Ga$_2$O$_3$ from 22$^\circ$C-500$^\circ$C in the spectral range of 1.5~eV--6.4~eV. We present the temperature dependence of the…

Materials Science · Physics 2018-02-14 A. Mock , J. VanDerslice , R. Korlacki , J. A. Woollam , M. Schubert

Accurately predicting carrier mobility in strongly anharmonic solids necessitates a precise characterization of lattice dyndamics as a function of temperature. We achieve consistency with experimental electron mobility data for bulk…

Materials Science · Physics 2024-07-29 Luigi Ranalli , Carla Verdi , Marios Zacharias , Jacky Evens , Feliciano Giustino , Cesare Franchini

The $\alpha$ phase of $Ga_{2}O_{3}$ is an ultra-wideband semiconductor with potential power electronics applications. In this work, we calculate the low field electron mobility in $\alpha-Ga_{2}O_{3}$ from first principles. The 10 atom unit…

Applied Physics · Physics 2021-02-24 Ankit Sharma , Uttam Singisetti
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