Results 41 to 50 of about 16,019 (311)

How the Carrier Mobility and Seebeck Coefficient of Doped Semiconducting Polymers Are Controlled by Counterion Interactions and Mesoscale Order

open access: yesAdvanced Functional Materials, EarlyView.
Conventional doping of P3HT with F4TCNQ results in poor charge transport. However, when F4TCNQ is exchanged with LiTFSI, the transport characteristics are greatly enhanced. We find the increase in charge transport is directly related to an increase in the mesoscale ordering of P3HT, resulting in longer and better‐connected transport pathways.
Quynh M. Duong   +9 more
wiley   +1 more source

The electronic and electromagnetic Dirac equations

open access: yesNew Journal of Physics
Maxwell’s equations and the Dirac equation are the first-order differential relativistic wave equation for electromagnetic waves and electronic waves respectively.
Mingjie Li, S A R Horsley
doaj   +1 more source

Path integral for the Dirac equation [PDF]

open access: yesPhysics Letters B, 1999
4 pages, uses sprocl.sty, talk delivered at the the conference "Path-integrals from peV to TeV", Florence, August ...
openaire   +5 more sources

Powering Nanocrystal‐Based Heat Engines With Light‐Emitting Metasurfaces That Influence Their Temperature

open access: yesAdvanced Functional Materials, EarlyView.
Metasurfaces and other structured photonic environments can dramatically modify the absorption and/or light emission of semiconductors. However, the consequences of these changes on the temperature of the system are not well understood. The authors address this problem for colloidal nanocrystals and leverage their findings to convert light into ...
Hugo Kowalczyk   +7 more
wiley   +1 more source

OCTONIONIC VERSION OF DIRAC EQUATIONS [PDF]

open access: yesInternational Journal of Modern Physics A, 2006
It is shown that a simple continuity condition in the algebra of split octonions suffices to formulate a system of differential equations that are equivalent to the standard Dirac equations. In our approach the particle mass and electromagnetic potentials are part of an octonionic gradient function together with the space–time derivatives. As distinct
openaire   +2 more sources

Controlled Engineering of 2D Alkali‐Iron‐Chloride Compounds and Lateral Quantum Heterostructures Within Confined Graphene Nanoreactors

open access: yesAdvanced Functional Materials, EarlyView.
This work presents a programmable atomic engineering strategy for 2D materials using Å‐scale nanoreactors formed by bilayer graphene (BLG) intercalation. A new class of alkali‐iron‐chloride compounds, along with lateral heterostructures composed of monolayer alkali halides and iron chlorides, is revealed.
Haiming Sun   +6 more
wiley   +1 more source

Resolving the Structural Duality of Graphene Grain Boundaries

open access: yesAdvanced Materials, EarlyView.
Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo   +11 more
wiley   +1 more source

On exact massless spinor quasibound states of Schwarzschild black hole

open access: yesPhysics Letters B
In the paper (D. Senjaya, 2024 [1]), the author investigated the massless spinor field in the Schwarzschild spacetime and derived an analytical solution expressed in terms of the Heun function. However, based on this approach, an incorrect expression for
Bobur Turimov, Sulton Usanov
doaj   +1 more source

How to drive a Dirac system fast and safe

open access: yesNew Journal of Physics, 2016
A recent article (Deffner New J. Phys. http://dx.doi.org/10.1088/1367-2630/18/1/012001 18 http://dx.doi.org/10.1088/1367-2630/18/1/012001 ) discusses how to speed up systems governed by the (1 + 1)-dimensional Dirac equation so that the ideal adiabatic ...
J G Muga, M A Simón, A Tobalina
doaj   +1 more source

On real solutions of the Dirac equation for a one-dimensional Majorana particle

open access: yesResults in Physics, 2019
We construct general solutions of the time-dependent Dirac equation in (1+1) dimensions with a Lorentz scalar potential, subject to the so-called Majorana condition, in the Majorana representation.
Salvatore De Vincenzo
doaj   +1 more source

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