Results 61 to 70 of about 340,303 (295)

Hopping magnetoresistance in ion irradiated monolayer graphene

open access: yes, 2015
Magnetoresistance (MR) of ion irradiated monolayer graphene samples with variable-range hopping (VRH) mechanism of conductivity was measured at temperatures down to $T = 1.8$ K in magnetic fields up to $B = 8$ T.
Butenko, A. V.   +10 more
core   +1 more source

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

open access: yesAdvanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger   +11 more
wiley   +1 more source

Symmetry Preservation and Critical Fluctuations in a Pseudospin Crossover Perovskite LaCoO$_3$

open access: yes, 2017
Spin-state crossover beyond a conventional ligand-field theory has been a fundamental issue in condensed matter physics. Here, we report microscopic observations of spin states and low-energy dynamics through orbital-resolved NMR spectroscopy in the ...
Itoh, Masayuki   +5 more
core   +1 more source

Studies of non-magnetic impurities in the spin-1/2 Kagome Antiferromagnet [PDF]

open access: yes, 2008
Motivated by recent experiments on ZnCu$_3$(OH)$_6$Cl$_2$, we study the inhomogeneous Knight shifts (local susceptibilities) of spin 1/2 Kagome antiferromagnet in the presence of nonmagnetic impurities.
J. Oitmaa   +2 more
core   +2 more sources

Intramolecular Down‐ and Up‐Conversion in Dimeric Tetracene Complexes Centered via Platinum(II) and Palladium(II)

open access: yesAdvanced Functional Materials, EarlyView.
Metal‐tetracene dimeric complexes are synthesized through the pyridyl coordination to either Pt(II) or Pd(II). Photophysical properties are systematically compared as a function of the metal using steady‐state and time‐resolved spectroscopy. The Pt(II) dimer exhibits efficient intramolecular singlet fission and subsequent intramolecular up‐conversion ...
Yifan Bo   +4 more
wiley   +1 more source

Structural Transitions and Magnetic Structure in NH4CuCl3 via 14N-NMR

open access: yes, 2005
We report results of 14N-NMR experiments on NH4CuCl3 at the magnetic field of 7 T, where the 1/4-magnetization plateau is observed at low temperatures.
Kodama, Katsuaki   +3 more
core   +1 more source

Finite temperature spin dynamics in a perturbed quantum critical Ising chain with an $E_8$ symmetry [PDF]

open access: yes, 2014
A spectrum exhibiting $E_8$ symmetry is expected to arise when a small longitudinal field is introduced in the transverse-field Ising chain at its quantum critical point.
Kormos, Márton, Si, Qimiao, Wu, Jianda
core   +2 more sources

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

open access: yesAdvanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida   +16 more
wiley   +1 more source

Low-Field Borehole NMR Applications in the Near-Surface Environment

open access: yesVadose Zone Journal, 2018
The inherent heterogeneity of the near subsurface (
Catherine M. Kirkland, Sarah L. Codd
doaj   +1 more source

Progress and Prospect for Machine Learning Applied in NMR Logging

open access: yesCejing jishu, 2023
Low-field nuclear magnetic resonance (NMR) technology has been widely used in petroleum engineering, which plays a critical role in reservoir evaluation and production prediction.
LUO Gang   +5 more
doaj   +1 more source

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