Results 61 to 70 of about 2,872,515 (340)

Temperature dependent charge transport in ferroelectrically gated graphene far from the Dirac point

open access: yesAIP Advances, 2022
Charge transport in ferroelectric (FE) gated graphene far from the Dirac point (DP) was studied in the temperature range 300 K < T < 350 K. A non-monotonic/monotonic/non-monotonic behavior in the conductivity [σ(T)] was observed as one moved away from ...
Kelotchi S. Figueroa   +4 more
doaj   +1 more source

Effect of impurity effect on the electron cyclotron current drive

open access: yesHe jishu, 2022
BackgroundIn recent years, electron cyclotron wave (ECW) heating and current drive (ECCD) have been widely used in tokamak discharge experiments. The inevitable presence of impurity particles in the tokamak plasma affects the ECCD through radiation ...
YANG Guang   +5 more
doaj   +1 more source

Global effects on neoclassical transport in the pedestal with impurities

open access: yes, 2016
We present a numerical study of collisional transport in a tokamak pedestal in the presence of non-trace impurities, using the radially global $\delta f$ neoclassical solver PERFECT [M. Landreman et al. 2014 Plasma Phys. Control. Fusion 56 045005]. It is
Buller, S., Landreman, M., Pusztai, I.
core   +1 more source

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

open access: yesAdvanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé   +5 more
wiley   +1 more source

SOLPS-ITER modification for impurity transport modelling in the tokamak pedestal region

open access: yesNuclear Materials and Energy
Kinetic corrections to SOLPS-ITER fluid equations are made to extend their applicability for description of the neoclassical part of impurity transport to collisionless regimes of the main ions.
V. Korzueva   +3 more
doaj   +1 more source

Transport measurement of the orbital Kondo effect with ultracold atoms

open access: yes, 2016
The Kondo effect in condensed-matter systems manifests itself most sharply in their transport measurements. Here we propose an analogous transport signature of the orbital Kondo effect realized with ultracold atoms.
Nishida, Yusuke
core   +1 more source

Quantum transport in non-Hermitian impurity arrays [PDF]

open access: yesPhysical Review B, 2019
We study the formation of band gap bound states induced by a non-Hermitian impurity embedded in a Hermitian system. We show that a pair of bound states emerges inside the band gap when a parity-time ($\mathcal{PT}$) imaginary potential is added in a strongly coupled bilayer lattices and the bound states become strongly localized when the system ...
K. L. Zhang, X. M. Yang, Z. Song
openaire   +2 more sources

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

open access: yesAdvanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan   +4 more
wiley   +1 more source

Impurity charge compensation in graphene by a polarized ferroelectric polymer and its effect on charge transport near the Dirac point

open access: yesAIP Advances, 2021
Charge transport near the Dirac point (DP) was investigated in graphene using ferroelectric (FE) gating in the temperature range of 300 < T < 350 K. We observed that the conductivity (σ) near the DP had a positive temperature gradient that switched to a ...
Kelotchi S. Figueroa   +4 more
doaj   +1 more source

A semiquantitative approach to the impurity-band-related transport properties of GaMnAs nanolayers

open access: yes, 2010
We investigate the spin-polarized transport of GaMnAs nanolayers in which a ferromagnetic order exists below a certain transition temperature. Our calculation for the self-averaged resistivity takes into account the existence of an impurity band ...
Boselli, M. A.   +3 more
core   +1 more source

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