Results 81 to 90 of about 119,533 (279)

Electronic states and optical properties of GaAs/AlAs and GaAs/vacuum superlattices by the linear combination of bulk bands method

, 2001
The linear combination of bulk bands method recently introduced by Wang, Franceschetti and Zunger [Phys. Rev. Lett.78, 2819 (1997)] is applied to a calculation of energy bands and optical constants of (GaAs)$_n$/(AlAs)$_n$ and (GaAs)$_n$/(vacuum)$_n ...
A. Baldereschi, A. Fainstein, A. Fiore, A.A. Sirenko, C.W. Teng, D.J. Chadi, E.E. Mendez, F. Bassani, J.P. Perdew, K.A. Mäder, L. C. Andreani, L. D. Landau, L.J. Sham, L.J. Sham, L.J. Sham, L.W. Wang, L.W. Wang, M. Alouani, M. Cardona, M. Garriga, M. Hybertsen, M. Hybertsen, M. Rohlfing, M.L. Chelikowsky, N. Wiser, O. Krebs, O. Krebs, P. Tognini, P.Y. Yu, R.W. Godby, R.W. Godby, S. Albrecht, S. Botti, S. Froyen, S.L. Adler, V.M. Agranovich, V.U. Nazarov, W. Hanke   +37 more
core   +3 more sources

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

Advanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund, Arthur Schulz, Peter Lunkenheimer, Maryana Kraft, Thomas Bergler, Harald Oberhofer, Dirk Volkmer   +6 more
wiley   +1 more source

A T 2 × R 2 roadmap to confinement in SU(2) Yang-Mills theory

Journal of High Energy Physics
We study the behaviour of SU(2) Yang-Mills fields on a T 2 × R 2 geometry where the two-torus is equipped with twisted boundary conditions. We monitor the evolution of the dynamics of the system as a function of the torus size l s .
Georg Bergner, Antonio González-Arroyo, Ivan Soler   +2 more
doaj   +1 more source

Confinement From The Gauge Invariant Abelian Decomposition [PDF]

, 2013
A common approach while considering confinement is to study the dominance of an Abelian subgroup of the SU(3) gauge Links. A good way to find the Abelian component of the field is through the Cho-Guan-De gauge invariant Abelian Decomposition, which uses ...
Cho, Yongmin, Cundy, Nigel, Lee, Weonjong   +2 more
core  

Chiral symmetry, scalar field and confinement : from nucleon structure to nuclear matter

, 2010
We discuss the relevance of the scalar modes appearing in chiral theories with spontaneous symmetry breaking such as the NJL model for nuclear matter studies. We show that it depends on the relative role of chiral symmetry breaking and confinement in the
Chanfray, G., Ericson, M.
core   +4 more sources

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

CuInSe2 quantum dots grown by molecular beam epitaxy on amorphous SiO2 surfaces

Beilstein Journal of Nanotechnology, 2019
The currently most efficient polycrystalline solar cells are based on the Cu(In,Ga)Se2 compound as a light absorption layer. However, in view of new concepts of nanostructured solar cells, CuInSe2 nanostructures are of high interest.
Henrique Limborço, Pedro M.P. Salomé, Rodrigo Ribeiro-Andrade, Jennifer P. Teixeira, Nicoleta Nicoara, Kamal Abderrafi, Joaquim P. Leitão, Juan C. Gonzalez, Sascha Sadewasser   +8 more
doaj   +1 more source

Low-Lying Dirac Eigenmodes, Topological Charge Fluctuations and the Instanton Liquid Model

, 2002
The local structure of low-lying eigenmodes of the overlap Dirac operator is studied. It is found that these modes cannot be described as linear combinations of 't Hooft "would-be" zeromodes associated with instanton excitations that underly the ...
AA Belavin, CG Callan, CG Callan, DI Diakonov, E Witten, EV Shuryak, G 't Hooft, H Neuberger, I Horváth, SJ Dong, T Banks, T DeGrand   +11 more
core   +2 more sources

Advancing Electronic Application of Coordination Solids: Enhancing Electron Transport and Device Integration via Surface‐Mounted MOFs (SURMOFs)

Advanced Functional Materials, EarlyView.
The layer‐by‐layer (LbL) assembly of coordination solids, enabled by the surface‐mounted metal‐organic framework (SURMOF) platform, is on the cusp of generating the organic counterpart of the epitaxy of inorganics. The programmable and sequential SURMOF protocol, optimized by machine learning (ML), is suited for accessing high‐quality thin films of ...
Zhengtao Xu, Christof Wöll, Stefan Bräse   +2 more
wiley   +1 more source

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source