scholarly journals Zero-field spin resonance in graphene with proximity-induced spin-orbit coupling

2021 ◽  
Vol 104 (15) ◽  
Author(s):  
Abhishek Kumar ◽  
Saurabh Maiti ◽  
Dmitrii L. Maslov
Keyword(s):  
Orbit Coupling ◽  
Zero Field ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Spin Resonance

Predicting phosphorescent lifetimes and zero-field splitting of organometallic complexes with time-dependent density functional theory including spin–orbit coupling

2014 ◽  
Vol 16 (28) ◽  
pp. 14523-14530 ◽  
Author(s):  
K. Mori ◽  
T. P. M. Goumans ◽  
E. van Lenthe ◽  
F. Wang
Keyword(s):  
Density Functional ◽  
Organometallic Complexes ◽  
Orbit Coupling ◽  
Zero Field ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Zero Field Splitting ◽  
Solvation Model ◽  
Functional Theory ◽  
Tddft Calculations

Experimental phosphorescent lifetimes for various organometallic complexes are well reproduced by spin–orbit coupling TDDFT calculations with a continuum solvation model.

Spin-Orbit Coupling and Zero-Field Electron Spin Splitting in AlGaN/AlN/GaN Heterostructures with a Polarization Induced Two-Dimensional Electron Gas

2006 ◽  
Vol 955 ◽  
Author(s):  
Ç. Kurdak ◽  
N. Biyikli ◽  
H. Cheng ◽  
U. Ozgur ◽  
H. Morkoç ◽  
...  
Keyword(s):  
Electron Spin ◽  
Orbit Coupling ◽  
Spin Splitting ◽  
Zero Field ◽  
Material System ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Weak Antilocalization ◽  
High Carrier ◽  
Dimensional Electron Gas

ABSTRACTWe studied spin-orbit coupling in wurtzite AlxGa1−xN/AlN/GaN heterostructures with different Al concentrations using weak antilocalization measurements at 1.6 K. Using the persistent photoconductivity effect we change the carrier density in controllable manner. We find that the electron spin splitting energies does not scale linearly with the Fermi wavevector at high carrier densities. From this deviation, for the first time, we are able to extract the cubic spin-orbit parameter for this material system.

Electron resonance of SO ( 3 Ʃ ) in the gas phase

1967 ◽  
Vol 298 (1454) ◽  
pp. 340-358 ◽  
Keyword(s):  
Coupling Constants ◽  
Orbit Coupling ◽  
Spin Coupling ◽  
Zero Field ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Coupling Constant ◽  
Molecular Constants ◽  
Excited Vibrational State ◽  
Electron Resonance

The electron resonance spectrum of SO has been previously shown to arise from SO in two electronic states, the ground 3 Ʃ - and the excited 1 ∆ state. In this paper the portion of the spectrum assigned to the 3 Ʃ - state is analysed and shown to arise from three isotopic species, 32 S 16 O, 33 S 16 O, and 34 S 16 O. The analysis shows that besides the dominant interaction of the unpaired electronic spins with the magnetic field; other interactions must be taken into account to interpret the spectrum accurately. Interactions with electronic orbital angular momentum of π states mixed in by spin-orbit coupling and with rotationally induced magnetic moments have been observed. Values for parameters measuring such interactions have been determined from the spectrum, and these values lead to a resolution of the first- and second-order contributions to the zero-field molecular constants as well as an approximate value for the spin-orbit coupling constant. The hyperftne structure resulting from 33 S in 33 S 16 O has also been observed and is related to the usual hyperfine coupling constants. The expected line strengths and widths for SO have been calculated and these are compared with the observed quantities. Besides the expected lines from the isotopic SO species in the 3 Ʃ - state, several other lines have been detected. These lines are interpreted as arising from 32 S 16 O in the ground electronic state, but in the first excited vibrational level. The spectrum of vibrationally excited SO allows a value of the spin-spin coupling constant in the first excited vibrational state to be determined.

Studies of EPR Parameters and Local Structure for Cr3+ in NaInS2 Crystal

2005 ◽  
Vol 60 (1-2) ◽  
pp. 91-94
Author(s):  
Yang Mei ◽  
Wen-Chen Zheng ◽  
Xiao-Xuan Wu ◽  
Qing Zhoua
Keyword(s):  
Local Structure ◽  
Coupling Parameter ◽  
Orbit Coupling ◽  
Zero Field ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Zero Field Splitting ◽  
Field Splitting ◽  
Epr Parameters ◽  
Local Angle

The EPR parameters (zero-field splitting D and g factors g‖, g⊥) of Cr3+ in a NaInS2 crystal are calculated from high-order perturbation formulas based on the two spin-orbit coupling parameter model for the EPR parameters of 3d3 ions in trigonal octahedral sites. In the calculations, both the contribution to EPR parameters from the spin-orbit coupling parameter of the central 3d3 ion and that of ligands are considered. From the calculations it is found that, to explain reasonably the EPR parameters, the local structure (in particular the local trigonal distortion angle θ ) in the vicinity of the Cr3+ impurity is different from the corresponding structure in the host crystal. The change of the local angle θ with temperature is also obtained from the temperature dependence of zero-field splitting. The results are discussed.

Studies of the Zero-Field Splitting for Mn2+ In 6H-RbMgF3 Crystal

2004 ◽  
Vol 59 (12) ◽  
pp. 961-963 ◽  
Author(s):  
Wen-Chen Zheng ◽  
Yang Mei ◽  
Xiao-Xuan Wu ◽  
Qing Zhou
Keyword(s):  
Structural Data ◽  
Orbit Coupling ◽  
Site Symmetry ◽  
Coupling Mechanism ◽  
Zero Field ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Superposition Model ◽  
Zero Field Splitting ◽  
Field Splitting

By using the spin-orbit coupling mechanism and the empirical superposition model, the zero-field splittings D of Mn2+ ions on both Mg2+ sites in hexagonal 6H-RbMgF3 crystal are calculated from the structural data of both Mg2+ sites. The calculated results of both methods confirm the suggestion that Mn2+ in 6H-RbMgF3 occupies the Mg2+ (I) site (which has D3d site symmetry) and the zero-field splitting D of 6H-RbMgF3: Mn2+ is explained reasonably.

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