scholarly journals Spin–Orbit Matrix Elements for a Combined Spin-Flip and IP/EA approach

2020 ◽  
Vol 16 (6) ◽  
pp. 3597-3606
Author(s):  
Oinam Romesh Meitei ◽  
Shannon E. Houck ◽  
Nicholas J. Mayhall
Keyword(s):  
Spin Orbit ◽  
Matrix Elements ◽  
Spin Flip

On the Landau–Lifshitz relaxation in ferromagnetic metals

1970 ◽  
Vol 48 (24) ◽  
pp. 2906-2911 ◽  
Author(s):  
V. Kamberský
Keyword(s):  
Magnetic Relaxation ◽  
Collision Frequency ◽  
Orbit Interaction ◽  
Spin Orbit ◽  
Spin Orbit Interaction ◽  
Ferromagnetic Metals ◽  
Spin Flip ◽  
Experimental Values ◽  
Inverse Proportionality

Scattering of ferromagnetic band-electrons by phonons combined with the spin–orbit interaction is shown to cause magnetic relaxation of the Landau–Lifshitz–Gilbert type. Two formally distinct processes are simply analyzed: (a) spin-flip scattering of electrons and (b) ordinary scattering between spin-dependent band levels. Estimates of the magnitude of the damping constant λ are derived for both cases, which agree in orders of magnitude with the experimental values for Fe and Ni. Relations of direct and inverse proportionality between λ and the ordinary collision frequency are found in the cases (a) and (b), respectively.

Convergence of Breit–Pauli spin–orbit matrix elements with basis set size and configuration interaction space: The halogen atoms F, Cl, and Br

2000 ◽  
Vol 112 (13) ◽  
pp. 5624-5632 ◽  
Author(s):  
Andreas Nicklass ◽  
Kirk A. Peterson ◽  
Andreas Berning ◽  
Hans-Joachim Werner ◽  
Peter J. Knowles
Keyword(s):  
Configuration Interaction ◽  
Interaction Space ◽  
Basis Set ◽  
Spin Orbit ◽  
Matrix Elements ◽  
Set Size ◽  
Halogen Atoms

scholarly journals Spin-Orbit Matrix Elements for a Combined Spin-Flip and IP/EA Approach

2020 ◽  
Author(s):  
Oinam Meitei ◽  
Shannon Houck ◽  
Nicholas Mayhall
Keyword(s):  
Mean Field ◽  
Coupling Constants ◽  
Basis Set ◽  
Reduced Density Matrix ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Matrix Elements ◽  
Dynamical Correlation ◽  
The Core ◽  
Reduced Density

We present a practical approach for computing the Breit-Pauli spin-orbit matrix elements of multiconfigurational systems with both spin and spatial degeneracies based on our recently developed RAS-nSF-IP/EA method (JCTC, 15,<br>2278, 2019). The spin-orbit matrix elements over all the multiplet components are computed using a single one-particle reduced density matrix as a result of the Wigner-Eckart theorem. A mean field spin-orbit approximation was used to account for the two-electron contributions. Basis set dependence as well as the effect of including additional excitations is presented. The effect of correlating the core and semi-core orbitals is also examined. Surprisingly accurate results are obtained for spin-orbit coupling constants, despite the fact that the efficient wavefunction approximations we explore neglect the bulk of dynamical correlation.<br>

scholarly journals Variation of NMEs of 0νββ for 48Ca with different components of NN interaction

2019 ◽  
Vol 223 ◽  
pp. 01057
Author(s):  
Shahariar Sarkar ◽  
Pawan Kumar ◽  
Kanhaiya Jha ◽  
P.K. Raina
Keyword(s):  
Beta Decay ◽  
Nuclear Matrix ◽  
Model Space ◽  
Neutrinoless Double Beta Decay ◽  
Double Beta Decay ◽  
Central Component ◽  
Spin Orbit ◽  
Matrix Elements ◽  
Nucleon Interaction ◽  
Total Interaction

We examine the sensitivity of nuclear matrix elements (NMEs) for light-neutrino exchange mechanism of neutrinoless double beta decay (0νββ) for 48Ca to the various components of two-nucleon interaction, GXPF1A, in fp model space. It is found that the contribution in NMEs coming from the central component is close to contribution from total interaction. The spin-orbit and tensor components are found canceling the contribution of each other.

Spin flip in single quantum ring with Rashba spin–orbit interation

2018 ◽  
Vol 27 (3) ◽  
pp. 037201
Author(s):  
Duan-Yang Liu ◽  
Jian-Bai Xia
Keyword(s):  
Quantum Ring ◽  
Spin Orbit ◽  
Single Quantum ◽  
Rashba Spin ◽  
Spin Flip
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