Results 61 to 70 of about 382,546 (261)

Spin and Charge Control of Topological End States in Chiral Graphene Nanoribbons on a 2D Ferromagnet

Advanced Materials, EarlyView.
Chiral graphene nanoribbons on a ferromagnetic gadolinium‐gold surface alloy display tunable spin and charge states at their termini. Atomic work function variations and exchange fields enabe transitions between singlet, doublet, and triplet configurations.
Leonard Edens, Francisco Romero‐Lara, Trisha Sai, Kalyan Biswas, Manuel Vilas‐Varela, Thomas Frederiksen, Diego Peña, Fabian Schulz, Jose Ignacio Pascual   +8 more
wiley   +1 more source

Microscopic Insights into Magnetic Warping and Time‐Reversal Symmetry Breaking in Topological Surface States of Rare‐Earth‐Doped Bi2Te3

Advanced Materials, EarlyView.
Magnetic doping of the topological insulator Bi2Te3 with erbium adatoms induces out‐of‐plane magnetism and breaks time‐reversal symmetry, opening a Dirac gap and driving a Fermi surface transition from hexagonal to star‐of‐David geometry. Microscopy, spectroscopy, and magnetic dichroism reveal atomically controlled magnetic interactions that tailor the
Beatriz Muñiz Cano, Fabián Calleja, Ji Dai, Massimo Tallarida, Vera Marinova, Alessandro Barla, Marc G. Cuxart, Pierluigi Gargiani, Gonzalo N. Molina, José Angel Silva‐Guillén, Adriana I. Figueroa, Kevin García‐Díez, Sergio O. Valenzuela, Aitor Mugarza, Amadeo L. Vázquez de Parga, Rodolfo Miranda, Francisco Guinea, Manuela Garnica, Miguel A. Valbuena   +18 more
wiley   +1 more source

Em nome do Pai: o Francisco de Assis de Leonardo Boff

Topoi
RESUMO O presente texto analisa a imagem de Francisco de Assis construída por Leonardo Boff. Discute-se aqui como o ainda frade franciscano Boff respondeu às sanções disciplinares a ele impostas pela Santa Sé, reação expressa no livro Francisco de Assis:
Marcelo Timotheo da Costa
doaj   +1 more source

apelos de Francisco

Revista Eclesiástica Brasileira
Os apelos do Papa Francisco enfrentam resistências dentro e fora da Igreja. De que maneira a ação do Pontífice colabora na gestação de novos sujeitos eclesiais e sociais engajados num projeto radical de reformas? A complexidade da atual crise civilizatória limita o impacto das ações institucionais por mudanças.
openaire   +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

Recensão: O FIDALGO APRENDIZ — D. FRANCISCO MANUEL DE MELO — EVELINA VERDELHO (ed.)

Revista de Estudos Literários, 2011
Recensão crítica de D. FRANCISCO MANUEL DE MELO. O FIDALGO APRENDIZ. Edição crítica de EVELINA VERDELHO. A Coruña, Biblioteca/Arquivo Teatral Francisco Pillado Mayor/Universidade da Coruña, 2007. 232 páginas. ISBN: 9788497492324.
Juan M. Carrasco González
doaj   +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

BOSQUES PLANTADOS

Colombia Forestal, 2012
Comité científico del simposio Director Luis Fernando Osorio Vélez, Ph.D. Universidad Nacional de Colombia, sede Medellín. Colombia. Bosques plantados Armando Vásquez, M.Sc. Universidad del Tolima. Colombia. Guido Gasca, I.F.
Luis Fernando Osorio, Director 5 Simp. For.
doaj  

La construcción visual y sonora de la imagen de San Francisco de Asís en el cine de mediados del siglo XX: entre Roma y Hollywood

Millars. Espai i Història
Se aborda la construcción de la imagen de San Francisco de Asís en el cine, a través del análisis comparativo de dos películas sobre el santo medieval: Francisco, juglar de Dios (Roberto Rossellini, 1950) y Francisco de Asís (Michael Curtiz, 1961 ...
Ángel Justo Estebaranz, Martina Forconi Baraldi   +1 more
doaj   +1 more source

Azaporphyrinoid‐Based Photo‐ and Electroactive Architectures for Advanced Functional Materials

Advanced Materials, EarlyView.
A long‐standing collaboration between the Torres and Guldi groups has yielded diverse azaporphyrinoid‐based donor‐acceptor nanohybrids with promising applications in solar energy conversion. This conspectus highlights key molecular platforms and structure‐function relationships that govern light and charge management, supporting the rational design of ...
Jorge Labella, Kobra Azizi, Dirk M. Guldi, Tomás Torres   +3 more
wiley   +1 more source