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N-polar GaN channel mobility is important for high frequency device applications. In this Letter, we report the theoretical calculations on the surface optical (SO) phonon scattering rate of two-dimensional electron gas (2-DEG) in N-polar…

介观与纳米尺度物理 · 物理学 2013-07-25 Uttam Singisetti

Nanostructured materials exhibit low thermal conductivity because of the additional scattering due to phonon-boundary interactions. As these interactions are highly sensitive to the mean free path (MFP) of a given phonon mode, MFP…

材料科学 · 物理学 2016-01-13 Giuseppe Romano , Keivan Esfarjani , David A. Strubbe , David Broido , Alexie M. Kolpak

Carrier mobility in bulk semiconductors is typically governed by electron-phonon (e-ph) scattering. In nanostructures, spatial confinement can lead to significant surface scattering, lowering mobility and breaking the spatial homogeneity…

材料科学 · 物理学 2025-12-25 Zirui He , Shang-Peng Gao , Meng Chen

We develop a continuous theory of low-frequency dynamics for single-walled carbon nanotubes (SWCNTs) weakly interacting with the environment. In the frame of the approach proposed we obtain temperature dependence of SWCNTs specific heat in…

介观与纳米尺度物理 · 物理学 2015-05-20 M. V. Avramenko , I. Yu. Golushko , A. E. Myasnikova , S. B. Rochal

We present a study of transport in graphene devices on polar insulating substrates by solving the Bolzmann transport equation in the presence of graphene phonon, surface polar phonon, and Coulomb charged impurity scattering. The value of…

介观与纳米尺度物理 · 物理学 2015-05-18 Vasili Perebeinos , Phaedon Avouris

Surface plasmon polaritons (SPPs) at the interface of a columnar thin film (CTF) and metal exist over a range of propagation directions relative to the morphology of the CTF which depends on the tilt of the columns in the CTF. The phase…

光学 · 物理学 2019-06-07 John A. Polo , Akhlesh Lakhtakia

Single-walled carbon nanotubes (SWNTs) have many interesting properties; they may be metallic or semiconducting depending on their diameter and helicity of the graphene sheet. Hydrostatic or quasi-hydrostatic high pressures can probe many…

材料科学 · 物理学 2009-11-10 R. Falconi , J. A. Azamar , R. Escudero

Biphenylene nanotubes (BPNNTs) represent a novel class of carbon-based nanomaterials, constructed by rolling a biphenylene network (BPN) monolayer into a one-dimensional tubular structure. In this study, the thermal transport properties of…

材料科学 · 物理学 2025-09-24 Jhionathan de Lima , Cristiano F. Woellner

The 1/f noise in individual semiconducting carbon nanotubes (s-CNT) in a field effect transistor configuration has been measured in ultra-high vacuum and following exposure to air. The amplitude of the normalized current spectral noise…

介观与纳米尺度物理 · 物理学 2009-11-11 Masa Ishigami , J. H. Chen , E. D. Williams , D. Tobias , Y. F. Chen , M. S. Fuhrer

A first-principles investigation of the electronic and quantum transport properties of double-walled carbon nanotubes doped with nitrogen and boron atoms is presented. Concentric nanotube sidewalls separated by the typical graphitic van der…

材料科学 · 物理学 2016-03-24 Alejandro Lopez-Bezanilla

We perform analysis of the band structure, phonon dispersion, and electron-phonon interactions in three types of small-radius carbon nanotubes. We find that the (5,5) can be described well by the zone-folding method and the electron-phonon…

超导电性 · 物理学 2009-11-10 Ryan Barnett , Eugene Demler , Efthimios Kaxiras

We present a theory for single- and two-phonon charge carrier scattering in anisotropic two-dimensional semiconductors applied to single-layer black phosphorus (BP). We show that in contrast to graphene, where two-phonon processes due to…

材料科学 · 物理学 2016-06-17 A. N. Rudenko , S. Brener , M. I. Katsnelson

Molecular level components, like carbon multiwalled nanotubes (MWNT), show great potential for future nanoelectronics. At low frequencies, only the outermost carbon layer determines the transport properties of the MWNT. Due to the…

介观与纳米尺度物理 · 物理学 2007-05-23 Markus Ahlskog , Pertti Hakonen , Mikko Paalanen , Leif Roschier , Reeta Tarkiainen

Effect of contact interfaces, between metallic single-wall carbon nanotubes (SWCNT) and external electrodes made also of nanotubes, on the electrical conductance is studied. A tight-binding model with both diagonal and off-diagonal…

介观与纳米尺度物理 · 物理学 2015-06-24 S. Krompiewski

We have measured shot noise in single walled carbon nanotubes (SWNT) with good contacts at 4.2 K at low frequencies ($f=600 - 850$ MHz). We find a strong modulation of shot noise over the Fabry-Perot pattern; in terms of differential Fano…

介观与纳米尺度物理 · 物理学 2009-11-13 F. Wu , P. Queipo , T. Tsuneta , T. H. Wang , E. Kauppinen , P. J. Hakonen

Carbon nanotubes (CNT) belong to the most promising new materials which can in the near future revolutionize the conventional electronics. When sandwiched between ferromagnetic electrodes, the CNT behaves like a spacer in conventional…

介观与纳米尺度物理 · 物理学 2009-11-10 S. Krompiewski

We examine the effect on the DC resistivity of small-q electron-phonon scattering, in a system with the electronic topology of the high-T_c oxides. Despite the fact that the scattering is dominantly forward, its contribution to the…

超导电性 · 物理学 2009-10-30 G. Varelogiannis , E. N. Economou

The electronic spectra of long carbon nanotubes (CNTs) can, to a very good approximation, be obtained using the dispersion relation of graphene with both angular and axial periodic boundary conditions. In short CNTs one must account for the…

介观与纳米尺度物理 · 物理学 2019-03-25 Magdalena Marganska , Miriam del Valle , Sung Ho Jhang , Christoph Strunk , Milena Grifoni

We investigate the low-field phonon-limited mobility in armchair graphene nanoribbons (GNRs) using full-band electron and phonon dispersion relations. We show that lateral confinement suppresses the intrinsic mobility of GNRs to values…

介观与纳米尺度物理 · 物理学 2015-05-27 Alessandro Betti , Gianluca Fiori , Giuseppe Iannaccone

Most carbon nanotube field-effect transistors (CNTFETs) directly attach metal source/drain contacts to an intrinsic nanotube channel. When the gate oxide thickness is reduced, such transistors display strong ambipolar conduction, even when…

介观与纳米尺度物理 · 物理学 2007-05-23 Jing Guo , Ali Javey , Hongjie Dai , Supriyo Datta , Mark Lundstrom