Results 31 to 40 of about 108,639 (205)

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

open access: yesAdvanced 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   +18 more
wiley   +1 more source

Colonialidad del poder: una invención jurídica de la conquista

open access: yesIntersticios, 2016
A través de la noción de self-government, este artículo se remonta a los orígenes de la colonialidad del poder. Esta colonialidad del poder se inicia con la noción de tutela colonial de los pueblos indoamericanos elaborada por algunos juristas españoles ...
Dardo Scavino
doaj  

La vivienda, un problema de acceso al suelo [PDF]

open access: yes, 2014
Indexación: Web of Science; Scielo.Fifty years of continuous development of land squatting seem to indicate the need for new instruments to face the housing deficit. Segregation and urban sprawl are evidences of the importance of land management policies
Castillo, María José, Forray, Rossana
core   +1 more source

Self‐Cooling Molecular Spin Qudits

open access: yesAdvanced 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   +12 more
wiley   +1 more source

Mesoporous Silica Nanoparticles in Biomedicine: Advances and Prospects

open access: yesAdvanced Materials, EarlyView.
Mesoporous silica nanoparticles offer unique properties like high surface area, tunable pores, and functionalization. They excel in drug delivery, tissue engineering, and stimuli‐responsive therapies, enabling targeted and controlled treatments. With roles in cancer therapy and diagnostics, their clinical translation requires addressing challenges in ...
Miguel Manzano, María Vallet‐Regí
wiley   +1 more source

Scale Urban Agriculture in Havana and the Reproduction of the ‘New Man’ in Contemporary Cuba

open access: yesEuropean Review of Latin American and Caribbean Studies, 2003
Drawing on ethnographic data collected in the  city of Havana, from 1999 to 2001, this paper  interrogates the purported rise in ‘individualistic’  and ‘capitalistic’ practices in post-Soviet Bloc Cuba.
Adriana Premat
doaj   +1 more source

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

open access: yesAdvanced 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   +6 more
wiley   +1 more source

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

open access: yesAdvanced 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   +3 more
wiley   +1 more source

Transparencia y rendición de cuentas en la filantropía y la inversión social privada [PDF]

open access: yes, 2015
Esta Caja de herramientas intenta informar a las organizaciones de apoyo que sirven a la filantropía respecto de los elementos esenciales de la transparencia y la rendición de cuentas para la filantropía y la inversión social privada.

core  

Variational solution of the T-matrix integral equation [PDF]

open access: yes, 2005
We present a variational solution of the T-matrix integral equation within a local approximation. This solution provides a simple form for the T matrix similar to Hubbard models but with the local interaction depending on momentum and frequency.
A. L. Fetter   +10 more
core   +2 more sources

Home - About - Disclaimer - Privacy