Results 91 to 100 of about 146,281 (291)

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

Energy spectra and quadrupole transition probabilities of 124-130Ba

open access: yes, 2016
In this paper, we have studied the energy spectra and B(E2) transition probabilities of 124-130Ba isotopes in the shape phase transition region between the spherical and gamma unstable deformed shapes.
Sabri, H., Seidi, M.
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

Singularly Perturbed Control Systems with Noncompact Fast Variable

open access: yes, 2015
We deal with a singularly perturbed optimal control problem with slow and fast variable depending on a parameter {\epsilon}. We study the asymptotic, as {\epsilon} goes to 0, of the corresponding value functions, and show convergence, in the sense of ...
Nguyen, Thuong, Siconolfi, Antonio
core   +1 more source

Decoupling of Carrier Pathways in Au/Cu‐Zn3In2S6 Through Bulk Hole Trapping and Surface Hot Electron Accumulation Enhances Photocatalytic Hydrogen Peroxide Production

open access: yesAdvanced Materials, EarlyView.
We design and implement Au‐Cu co‐modified Zn3In2S6 catalyst with spatially decoupling charge carriers across bulk and surface sites, which effectively suppresses carrier recombination, drives surface hot electron accumulation and stabilizes intermediates for photocatalytic oxygen reduction. The optimized catalyst achieves an H2O2 evolution rate of 94.2
Xiaowen Ruan   +10 more
wiley   +1 more source

High-Resolution Nanoscale Solid-State Nuclear Magnetic Resonance Spectroscopy

open access: yesPhysical Review X, 2018
We present a new method for high-resolution nanoscale magnetic resonance imaging (nano-MRI) that combines the high spin sensitivity of nanowire-based magnetic resonance detection with high-spectral-resolution nuclear magnetic resonance (NMR) spectroscopy.
William Rose   +6 more
doaj   +1 more source

Port-Controlled Hamiltonian and Sliding Mode Control of Gantry Robot Based on Induction Motor Drives

open access: yesIEEE Access, 2018
A port-controlled Hamiltonian (PCH) control approach is presented to solve the position tracking problem of gantry robot based on induction motor (IM) drives. First, a robot model is established.
Bingkun Zhao   +4 more
doaj   +1 more source

Anisotropic g factor in InAs self-assembled quantum dots

open access: yes, 2014
We investigate the wave functions, spectrum, and g-factor anisotropy of low-energy electrons confined to self-assembled, pyramidal InAs quantum dots (QDs) subject to external magnetic and electric fields.
Loss, Daniel   +2 more
core   +1 more source

Polyimide‐Linked Hexaazatriphenylene‐Based Porous Organic Polymer with Multiple Redox‐Active Sites as a High‐Capacity Organic Cathode for Lithium‐Ion Batteries

open access: yesAdvanced Materials, EarlyView.
A high‐capacity polyimide‐linked porous organic polymer (HAT‐PTO) incorporating numerous redox‐active centers is synthesized via a hydrothermal reaction, delivering a high theoretical capacity of 484 mAh g−1. In situ hybridization with carboxyl‐functionalized multiwalled carbon nanotubes enhances conductivity and stability, achieving 397 mAh g−1 at C ...
Arindam Mal   +7 more
wiley   +1 more source

Boosting the Transparency of Metallic SrNbO3 Through Ti Doping

open access: yesAdvanced Materials Interfaces, EarlyView.
Transparent conductors are optoelectronic devices of high demand. The present study presents a path on how to boost the figure of merit of the recently proposed perovskite oxides: Ti doping reduces electronic correlations and thus the absorption above the plasma frequency, while keeping the plasma frequency below the visible range.
Shammi Kumar   +5 more
wiley   +1 more source

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