Understanding the effect of an anionic side-chain on the nuclear spin dynamics of a polysaccharide

Cellulose ◽  
2022 ◽  
Author(s):  
Krishna Kishor Dey ◽  
Manasi Ghosh
Keyword(s):  
Nuclear Spin ◽  
Spin Dynamics ◽  
Side Chain

Strong Coupling of Electron and Nuclear Spins: Outlook and Prospects

2018 ◽  
Author(s):  
M. M. Glazov
Keyword(s):  
Energy Spectrum ◽  
Charge Carrier ◽  
Strong Coupling ◽  
Nuclear Spin ◽  
Spin Dynamics ◽  
Spin Polaron ◽  
Nuclear Spins ◽  
Deep Impurity ◽  
Impurity Centers ◽  
Ordered State

In this chapter, some prospects in the field of electron and nuclear spin dynamics are outlined. Particular emphasis is put ona situation where the hyperfine interaction is so strong that it leads to a qualitative rearrangement of the energy spectrum resulting in the coherent excitation transfer between the electron and nucleus. The strong coupling between the spin of the charge carrier and of the nucleus is realized, for example in the case of deep impurity centers in semiconductors or in isotopically purified systems. We also discuss the effect of the nuclear spin polaron, that is ordered state, formation at low enough temperatures of nuclear spins, where the orientation of the carrier spin results in alignment of the spins of nucleus interacting with the electron or hole.

Nuclear spin dynamics using time-dependent projection operators: Application to the saturation of dipolar order in slowly rotating samples

2007 ◽  
Vol 127 (22) ◽  
pp. 224506 ◽  
Author(s):  
T. Charpentier ◽  
D. Sakellariou ◽  
J. Virlet ◽  
F. S. Dzheparov ◽  
J.-F. Jacquinot
Keyword(s):  
Nuclear Spin ◽  
Spin Dynamics ◽  
Time Dependent ◽  
Projection Operators ◽  
Dipolar Order

scholarly journals Programmable Nuclear-Spin Dynamics in Ti(IV) Coordination Complexes

2020 ◽  
Vol 59 (11) ◽  
pp. 7479-7486
Author(s):  
Spencer H. Johnson ◽  
Cassidy E. Jackson ◽  
Joseph M. Zadrozny
Keyword(s):  
Nuclear Spin ◽  
Spin Dynamics ◽  
Coordination Complexes

scholarly journals Nuclear-spin-pattern control of electron-spin dynamics in a series of V(iv) complexes

2019 ◽  
Vol 10 (36) ◽  
pp. 8447-8454 ◽  
Author(s):  
Cassidy E. Jackson ◽  
Chun-Yi Lin ◽  
Spencer H. Johnson ◽  
Johan van Tol ◽  
Joseph M. Zadrozny
Keyword(s):  
Spin Relaxation ◽  
Electron Spin ◽  
Nuclear Spin ◽  
Spin Dynamics ◽  
Relaxation Times ◽  
Open Shell ◽  
Pattern Control ◽  
Electron Spin Dynamics

This report details how the design of specific nuclear-spin patterns on ligands modulates spin-relaxation times in a set of open-shell vanadium(iv) complexes.

31P Nuclear Spin Dynamics in Metallic Si:P at Very Low Temperature and High Magnetic Fields

2009 ◽  
Vol 78 (7) ◽  
pp. 075003 ◽  
Author(s):  
Minki Jeong ◽  
Myeonghun Song ◽  
Tomohiro Ueno ◽  
Takao Mizusaki ◽  
Akira Matsubara ◽  
...  
Keyword(s):  
Low Temperature ◽  
Magnetic Fields ◽  
Nuclear Spin ◽  
Spin Dynamics ◽  
High Magnetic Fields ◽  
Very Low Temperature

Experimental Tests of Possible Mechanisms for the Organic Magnetoresistive Effect

2007 ◽  
Vol 1032 ◽  
Author(s):  
Tho Duc Nguyen ◽  
James Rybicki ◽  
Yugang Sheng ◽  
Markus Wohlgenannt
Keyword(s):  
Magnetic Field ◽  
Organic Semiconductors ◽  
Electrode Materials ◽  
Spin Dynamics ◽  
Experimental Tests ◽  
Triplet Exciton ◽  
Side Chain ◽  
Singlet Exciton ◽  
Organic Magnetoresistance ◽  
Magnetoresistive Effect

AbstractWe experimentally test three existing models of organic magnetoresistance (OMAR) which are all based on carrier spin dynamics. We first prove that hyperfine field originating from the hydrogen nuclei in organic materials is necessary for observing OMAR by studying C60 sandwich devices using several different electrode materials. We show that C60, unlike many other organic semiconductors, does not exhibit any intrinsic OMAR effect. However, we find that as soon as the carriers in C60 are brought in proximity with hydrogen-containing compounds, either in the form of a polymeric electrode, or side-chain substituents, a weak OMAR effect is observed. Next, we perform charge-induced absorption and electroluminescence spectroscopy in a polyfluorene organic magnetoresistive device. Our experiments allow us to measure the singlet exciton, triplet exciton and polaron densities in a live device under an applied magnetic field, and to distinguish between three models of OMAR. These models are based on different spin-dependent interactions, namely exciton formation, triplet exciton-polaron quenching and bipolaron formation. We show that the singlet exciton, triplet exciton and polaron densities and conductivity all increase with increasing magnetic field. Our data are inconsistent with the exciton formation and triplet-exciton polaron quenching models.

Electron paramagnetic resonance study of the nuclear spin dynamics in an AlAs quantum well

JETP Letters ◽  
2016 ◽  
Vol 104 (12) ◽  
pp. 838-841 ◽  
Author(s):  
A. V. Shchepetilnikov ◽  
D. D. Frolov ◽  
Yu. A. Nefyodov ◽  
I. V. Kukushkin ◽  
L. Tiemann ◽  
...  
Keyword(s):  
Electron Paramagnetic Resonance ◽  
Quantum Well ◽  
Nuclear Spin ◽  
Spin Dynamics ◽  
Electron Paramagnetic Resonance Study ◽  
Paramagnetic Resonance ◽  
Electron Paramagnetic

Quantitative prediction of nuclear-spin-diffusion-limited coherence times of molecular quantum bits based on copper(ii)

2017 ◽  
Vol 53 (32) ◽  
pp. 4477-4480 ◽  
Author(s):  
S. Lenz ◽  
K. Bader ◽  
H. Bamberger ◽  
J. van Slageren
Keyword(s):  
Electron Spin ◽  
Nuclear Spin ◽  
Spin Diffusion ◽  
Spin Dynamics ◽  
Quantitative Prediction ◽  
Quantum Bits ◽  
Diffusion Limited ◽  
Frozen Solutions ◽  
Electron Spin Dynamics

We have investigated the electron spin dynamics in a series of copper(ii) β-diketonate complexes both in frozen solutions and doped solids. We simulate the coherence decay quantitatively without fit parameters.

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