Results 71 to 80 of about 3,194 (260)

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

Nanociencia y Nanotecnología... un mundo pequeño

Cuadernos del Centro de Estudios de Diseño y Comunicación, 2019
Este artículo resume el estado de desarrollo de la Nanociencia y la Nanotecnologíaen la actualidad. Los efectos en la educación. Los descubrimientos científicos más recientesen todas las áreas industriales aplicadas a la Nanotecnología. El desarrollo de materiales en laindustria textil con la utilización de nanotecnología y nano partículas que crean ...
openaire   +2 more sources

Edge binding of sine-Gordon solitons in spin-orbit coupled Bose-Einstein condensates

, 2015
In recent experiments with ultracold gases a Raman coupling scheme is used to produce both spin-orbit (SO) and Zeeman-type couplings [Y.-J. Lin et al., Nature 471, 83 (2011)]. Their competition drives a phase transition to a magnetized state with broken $
Di Ventra, Massimiliano, Mireles, Francisco, Peotta, Sebastiano   +2 more
core   +1 more source

Synthetic Beuys: on nano-materials and the aesthetics of imperceptibility [PDF]

, 2015
Aquest treball centra l'atenció sobre la paradoxal naturalesa dels nanoobjectes i analitza la relació entre una matèria imperceptible (massa petita per ser percebuda pels sentits) i les seves formes de manifestació ostensibles.
Heinzel, T
core   +1 more source

Self‐Cooling Molecular Spin Qudits

Advanced Materials, EarlyView.
A material made of [GdEr] molecular dimers can encode a qudit and perform as a magnetic refrigerant. Microwave resonant pulses coherently manipulate its 16 spin states, while direct demagnetization measurements cool the material and a device down to temperatures below 1 K.
Elías Palacios, David Aguilà, David Gracia, Diamatoula Maniaki, Leoní A. Barrios, Alessandro Chiesa, Jesús I. Martínez, Valentin Novikov, Olivier Roubeau, Stefano Carretta, Marco Evangelisti, Guillem Aromí, Fernando Luis   +12 more
wiley   +1 more source

Gobernanza de las nanotecnologías

Arbor: Ciencia, Pensamiento y Cultura, 2005
Las nanotecnologias y los programas Converging Technologies (CT) plantean importantes desafíos a la gobernanza de la ciencia y la tecnología, al desarrollarse en un sistema transnacional de l+D+i con una pluralidad de agentes que compiten y cooperan ...
Javier Echeverría
doaj   +1 more source

Luminescence properties and cell uptake analysis of Y2O3:Eu, Bi nanophosphors for bio-imaging applications

Journal of Materials Research and Technology, 2021
A comparative investigation of nanostructural and photoluminescence properties (PL), functionalization, cytotoxicity and cell uptake of Y2O3:Eu3+,Bi3+ nanoparticles (NPs) fabricated by sol–gel (SG) and combustion synthesis (CS) is reported in this work ...
D. Chávez-García, P. Sengar, K. Juárez-Moreno, D.L. Flores, I. Calderón, J. Barrera, G.A. Hirata   +6 more
doaj   +1 more source

Atomistic Mechanisms Triggered by Joule Heating Effects in Metallic Cu‐Bi Nanowires for Spintronics

Advanced Materials, EarlyView.
Bi doped metallic Cu nanowires are promising for spintronics thanks to the stabilization of a giant spin Hall effect. However, heat resulting from current injection forces Bi to leave solution, forcing segregation into monoatomic decorations which evolve into coherent crystalline aggregates.
Alejandra Guedeja‐Marrón, Juan Ignacio Beltrán, Matilde Saura‐Múzquiz, Paolo Perna, M. Carmen Muñoz, Lucas Pérez, Maria Varela   +6 more
wiley   +1 more source

Large magnetic anisotropy in Ferrihydrite nanoparticles synthesized from reverse micelles

, 2006
Six-line ferrihydrite(FH) nanoparticles have been synthesized in the core of reverse micelles, used as nanoreactors to obtain average particle sizes $$ $\approx$ 2 to 4 nm.
Arelaro A D, Bell S H, Cornell R M, Dormann J L, Drits V A, E L Duarte, E Lima, G F Goya, Jolivet J P, Klug H P, M S Baptista, Murad E, Néel L, Néel L, Pardoe H, R Itri, T S Berquó   +16 more
core   +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