Results 181 to 190 of about 6,537 (288)

Study of single impurity Anderson model and dynamical mean field theory based on equation-of-motion method

, 2009
In this thesis, we studied the single impurity Anderson model and developed a new and fast impurity solver for the dynamical mean field theory (DMFT). Using this new impurity solver, we studied the Hubbard model and periodic Anderson model for various ...
Feng, Qingguo
core  

A comprehensive analytical study of solitons and nonlinear dynamics in a concatenated DNLS-type model. [PDF]

Sci Rep
Farooq FB, Raza N, Ejaz A, Bayram M, Vivas-Cortez M.   +4 more
europepmc   +1 more source

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

Advanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje, Wilson Henao, Tania Rodenas, Patricia Concepción, Virginia Pérez Dieste, Alexander Missyul, Giovanni Agostini, Gonzalo Prieto   +7 more
wiley   +1 more source

Ground-state orbital angular momentum lasing from liquid crystal torons embedded in a microcavity. [PDF]

Sci Adv
Muszyński M, Bobylev D, Kapuściński P, Oliwa P, Mędrzycka J, Oton E, Mazur R, Morawiak P, Piecek W, Kula P, Solnyshkov D, Malpuech G, Szczytko J.   +12 more
europepmc   +1 more source

Resolving the Structural Duality of Graphene Grain Boundaries

Advanced 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, Emiliano Ventura‐Macías, Mariano D. Jiménez‐Sánchez, Nicoleta Nicoara, Pierre Mallet, Jean‐Yves Veuillen, Vincent T. Renard, Antonio J. Martínez‐Galera, Pablo Pou, Julio Gómez‐Herrero, Rubén Pérez, Iván Brihuega   +11 more
wiley   +1 more source

Limits on transverse zero sound in Fermi liquid ³He. [PDF]

Sci Adv
Nguyen MD, Park D, Scott JW, Zhelev NZ, Halperin WP.   +4 more
europepmc   +1 more source

Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics

Advanced Materials, EarlyView.
The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades, Pedro Hidalgo, David Maestre, Ruth Martínez‐Casado, Emilio Nogales, Beatriz Rodríguez, G. Cristian Vásquez, Bianchi Méndez   +7 more
wiley   +1 more source

Dynamical analysis and soliton solutions to (3+1)-dimensional extended quantum nonlinear Zakharov-Kuznetsov equation. [PDF]

Sci Rep
Fatima M, Abbas M, Higazy M, Anwar MN, Yousaf MZ, Birhanu A, Hamed YS.   +6 more
europepmc   +1 more source

Directional Flow of Confined Polaritons in CrSBr

Advanced Materials, EarlyView.
CrSBr, a layered magnetic semiconductor, naturally channels self‐hybridized excitonpolaritons into highly directional flow. Its intrinsic optical anisotropy, high refractive index, and strong lightmatter coupling enable long‐range guided modes along the a‐axis, with propagation lengths set by their excitonphoton admixture.
Pratap Chandra Adak, Sichao Yu, Jaime Abad‐Arredondo, Biswajit Datta, Andy Cruz, Sorah Fischer, Kseniia Mosina, Zdeněk Sofer, Antonio I. Fernández‐Domínguez, Francisco J. Garcia‐Vidal, Vinod M. Menon   +10 more
wiley   +1 more source

Quasiparticle Effects and Strong Excitonic Features in Exfoliable 1D Semiconducting Materials. [PDF]

ACS Nano
Grillo S, Cignarella C, Bechstedt F, Gori P, Palummo M, Campi D, Marzari N, Pulci O.   +7 more
europepmc   +1 more source