scholarly journals Giant exchange coupling and field-induced slow relaxation of magnetization in Gd2@C79N with a single-electron Gd–Gd bond

2018 ◽  
Vol 54 (23) ◽  
pp. 2902-2905 ◽  
Author(s):  
G. Velkos ◽  
D. S. Krylov ◽  
K. Kirkpatrick ◽  
X. Liu ◽  
L. Spree ◽  
...  
Keyword(s):  
Electron Spin ◽  
Unpaired Electron ◽  
Exchange Coupling ◽  
Magnetic Moments ◽  
Slow Relaxation ◽  
Single Electron ◽  
Ferromagnetic Coupling

Single-electron Gd–Gd bond in Gd2@C79N results in giant ferromagnetic coupling between local 4f magnetic moments and unpaired electron spin.

Electron Spin Decoherence by Nuclei

2018 ◽  
Author(s):  
M. M. Glazov
Keyword(s):  
Electron Spin ◽  
Spin Dynamics ◽  
Magnetic Moments ◽  
Host Lattice ◽  
Spin Model ◽  
Relaxation Processes ◽  
Nuclear Spins ◽  
Model Calculations ◽  
Spin Decoherence ◽  
Quantum Mechanical Approach

The discussion of the electron spin decoherence and relaxation phenomena via the hyperfine interaction with host lattice spins is presented here. The spin relaxation processes processes limit the conservation time of spin states as well as the response time of the spin system to external perturbations. The central spin model, where the spin of charge carrier interacts with the bath of nuclear spins, is formulated. We also present different methods to calculate the spin dynamics within this model. Simple but physically transparent semiclassical treatment where the nuclear spins are considered as largely static classical magnetic moments is followed by more advanced quantum mechanical approach where the feedback of electron spin dynamics on the nuclei is taken into account. The chapter concludes with an overview of experimental data and its comparison with model calculations.

A novel and facile route to in-situ formation of composites with dual coupling interactions for considerable millimeter-wave absorption performance

2021 ◽  
Author(s):  
Chuyang Liu ◽  
Tao Jiang ◽  
Tian Gao ◽  
Guangxian Xia ◽  
Yufan Cao ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Exchange Coupling ◽  
Ferromagnetic Coupling ◽  
Soft Magnetic ◽  
Magnetic Exchange ◽  
Magnetic Exchange Coupling ◽  
Absorption Performance ◽  
In Situ Formation ◽  
Facile Route

It is well known that both hard/soft magnetic exchange-coupling and ferroelectric-ferromagnetic coupling could facilitate the microwave absorption behavior. Herein, we propose the BaZrxFe12-xO19/Fe3O4/BaZrO3 composites to integrate the advantages of the...

Effects on the magnetic and optical properties of Co-doped ZnO at different electronic states

2017 ◽  
Vol 31 (31) ◽  
pp. 1750247
Author(s):  
Qingyu Huo ◽  
Zhenchao Xu ◽  
Linfeng Qu
Keyword(s):  
Absorption Spectrum ◽  
Spin Polarization ◽  
Electron Spin ◽  
Magnetic Moments ◽  
The State ◽  
Band Gaps ◽  
Electron Spin Polarization ◽  
Approximation Formula ◽  
Doped Zno ◽  
Co Doped

Both blue and red shifts in the absorption spectrum of Co-doped ZnO have been reported at a similar concentration range of doped Co. Moreover, the sources of magnetism of Co-doped ZnO are controversial. To solve these problems, the geometry optimization and energy of different Co-doped ZnO systems were calculated at the states of electron spin polarization and nonspin polarization by adopting plane-wave ultra-soft pseudopotential technology based on density function theory. At the state of electron nonspin polarization, the total energies increased as the concentration of Co-doped increased. The doped systems also became unstable. The formation energies increased and doping became difficult. Furthermore, the band gaps widened and the absorption spectrum exhibited a blue shift. The band gaps were corrected by local-density approximation + [Formula: see text] at the state of electron spin polarization. The magnetic moments of the doped systems weakened as the concentration of doped Co increased. The magnetic moments were derived from the coupling effects of [Formula: see text]–[Formula: see text]. The band gaps narrowed and the absorption spectrum exhibited a red shift. The inconsistencies of the band gaps and absorption spectrum at the states of electron spin polarization and nonspin polarization were first discovered in this research, and the sources of Co-doped ZnO magnetism were also reinterpreted.

scholarly journals Reconfigurable Logic Gates Using Single-Electron Spin Transistors

2007 ◽  
Vol 46 (10A) ◽  
pp. 6579-6585 ◽  
Author(s):  
Pham Nam Hai ◽  
Satoshi Sugahara ◽  
Masaaki Tanaka
Keyword(s):  
Electron Spin ◽  
Logic Gates ◽  
Single Electron ◽  
Reconfigurable Logic ◽  
Spin Transistors

Paramagnetic resonance and detection of a single electron spin

2001 ◽  
Vol 70 (7) ◽  
pp. 535-541 ◽  
Author(s):  
Anatolii L Buchachenko ◽  
Fedor I Dalidchik ◽  
Sergei A Kovalevskii ◽  
Boris R Shub
Keyword(s):  
Electron Spin ◽  
Single Electron ◽  
Paramagnetic Resonance

scholarly journals All-electric single electron spin initialization

2017 ◽  
Vol 19 (12) ◽  
pp. 123006 ◽  
Author(s):  
S Bednarek ◽  
J Pawłowski ◽  
M Górski ◽  
G Skowron
Keyword(s):  
Electron Spin ◽  
Single Electron

Do primary carriers of both positive charge and unpaired electron spin exist in irradiated propylene carbonate?

2017 ◽  
Vol 19 (1) ◽  
pp. 49-53 ◽  
Author(s):  
V. I. Borovkov
Keyword(s):  
Magnetic Field ◽  
Propylene Carbonate ◽  
Electron Spin ◽  
Unpaired Electron ◽  
Positive Charge ◽  
Radical Cations ◽  
Carbonate Solutions ◽  
Solvent Molecules

Magnetic field sensitive fluorescence from irradiated propylene carbonate solutions indicates the existence of previously unobserved radical cations formed from the solvent molecules.

scholarly journals Single-electron Spin Resonance in a Quadruple Quantum Dot

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Tomohiro Otsuka ◽  
Takashi Nakajima ◽  
Matthieu R. Delbecq ◽  
Shinichi Amaha ◽  
Jun Yoneda ◽  
...  
Keyword(s):  
Electron Spin Resonance ◽  
Quantum Dot ◽  
Electron Spin ◽  
Single Electron ◽  
Spin Resonance

Helicene Radicals: Molecules Bearing a Combination of Helical Chirality and Unpaired Electron Spin

ChemPlusChem ◽  
2020 ◽  
Vol 85 (9) ◽  
pp. 2093-2104
Author(s):  
Fumito Tani ◽  
Masahiro Narita ◽  
Toshihiro Murafuji
Keyword(s):  
Electron Spin ◽  
Unpaired Electron ◽  
Helical Chirality
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