Phonon scattering by 3d impurities in III-V semiconductors: evidence of a low-spin ground state for V2+in GaAs?

1989 ◽  
Vol 1 (7) ◽  
pp. 1191-1203 ◽  
Author(s):  
N Butler ◽  
L J Challis ◽  
M Sahraoui-Tahar ◽  
B Salce ◽  
W Ulrici
Keyword(s):  
Ground State ◽  
Phonon Scattering ◽  
3D Impurities ◽  
Spin Ground State

Electronic and Magnetic Properties of Interstitial 3d Impurities in Silicon

1985 ◽  
Vol 46 ◽  
Author(s):  
H. Katayama-Yoshida ◽  
Alex Zunger
Keyword(s):  
Magnetic Properties ◽  
Ground State ◽  
Hyperfine Coupling ◽  
Coupling Constants ◽  
Self Consistent ◽  
G Value ◽  
First Time ◽  
Chemical Trends ◽  
3D Impurities ◽  
Spin Ground State

AbstractSelf-consistent spin-unrestricted all-electron Green's function calculations are reported for the first time for a series of interstitial 3d impurities in silicon. The calculations, performed within the selfinteraction- corrected local-spin-density fromalism show: (i) not all 3d impurities follow Hund's rule: Tio, Ti−, Vo, V+ and Co2+ have a low-spin ground state, (ii) the angular momentum part gL of g-value is quenched due to p-d hybridization effects, (iii) covalency explains also the chemical trends in the central hyperfine coupling constants, (iii) chemical trends in donor andacceptor transitions are reproduced and are consistent with a high-spin to lowspin transition at the low-Z end and high-Z end of the 3d series, (iv) A number of predictions are offered.

DFT Computational Rationalization of an Unusual Spin Ground State in an Mn12 Single-Molecule Magnet with a Low-Symmetry Loop Structure

2005 ◽  
Vol 117 (6) ◽  
pp. 919-923 ◽  
Author(s):  
Dolos Foguet-Albiol ◽  
Ted A. O'Brien ◽  
Wolfgang Wernsdorfer ◽  
Brian Moulton ◽  
Michael J. Zaworotko ◽  
...  
Keyword(s):  
Single Molecule ◽  
Ground State ◽  
Loop Structure ◽  
Single Molecule Magnet ◽  
Low Symmetry ◽  
Spin Ground State

Targeted construction of azido-bridged Ni4complexes with decisive effect of µ-1,3-azide torsion on the spin ground state

2006 ◽  
pp. 3458-3465 ◽  
Author(s):  
Serhiy Demeshko ◽  
Guido Leibeling ◽  
Sebastian Dechert ◽  
Franc Meyer
Keyword(s):  
Ground State ◽  
Decisive Effect ◽  
Spin Ground State

Strong Ferromagnetic Interactions in[V8O14(H−2taci)2]: An Unprecedented Large Spin Ground State for a Vanadyl Cluster

2004 ◽  
Vol 43 (26) ◽  
pp. 3436-3439 ◽  
Author(s):  
Kaspar Hegetschweiler ◽  
Bernd Morgenstern ◽  
Jon Zubieta ◽  
Pamela J. Hagrman ◽  
Nicola Lima ◽  
...  
Keyword(s):  
Ground State ◽  
Ferromagnetic Interactions ◽  
Large Spin ◽  
Spin Ground State

Possibility for an intermediate-spin ground state in the charge-transfer materialSrCoO3

1995 ◽  
Vol 51 (17) ◽  
pp. 11501-11506 ◽  
Author(s):  
R. H. Potze ◽  
G. A. Sawatzky ◽  
M. Abbate
Keyword(s):  
Charge Transfer ◽  
Ground State ◽  
Intermediate Spin ◽  
Spin Ground State

Giant Heterometallic Cu17Mn28Cluster withTdSymmetry and High-Spin Ground State

2007 ◽  
Vol 129 (5) ◽  
pp. 1014-1015 ◽  
Author(s):  
Wen-Guo Wang ◽  
Ai-Ju Zhou ◽  
Wei-Xiong Zhang ◽  
Ming-Liang Tong ◽  
Xiao-Ming Chen ◽  
...  
Keyword(s):  
High Spin ◽  
Ground State ◽  
Spin Ground State

THE EFFECTS OF TEMPERATURE ON DIFFERENT LASER TRANSITIONS OF NEODYMIUM ORTHOVANADATE CRYSTAL

2016 ◽  
Vol 78 (3) ◽  
Author(s):  
Ganesan Krishnan ◽  
Noriah Bidin
Keyword(s):  
Laser Diode ◽  
Ground State ◽  
Phonon Scattering ◽  
Laser Crystal ◽  
Laser System ◽  
Temperature Dependent ◽  
Laser Transition ◽  
Level Laser ◽  
Effects Of Temperature ◽  
Terminal Level

The temperature dependence of Nd:YVO4 laser crystal pumped by laser diode emitting at 808 nm is studied within the range of 5 oC to 60 oC. The spectroscopy properties of quasi three level at 914 nm (4F3/2 - 4I 9/2) and four level at 1064 nm (4F3/2 - 4I 11/2) are characterized. The lineshape function of the transition lines were broadened as the temperature increases. The phenomenon is attributed to change in linewidth, lineshift and intensity. The linewidths for both laser transition of 914 nm and 1064 nm increases with temperature with the rate of 0.105 cm-1/oC and 0.074 cm-1/oC respectively. The peak of 914nm and 1064 nm lineshapes shifted to a longer wavelength with the rate of 3.0 pm/oC and 4.2 pm/oC respectively which correspond to same amount of lineshift. The lineshape broadening with respect to the temperature is due to one-phonon emission and Raman phonon scattering processes.  The intensities of 914 nm and 1064 nm transition lines are found to be decreased at the rate of 0.15 %/oC and 0.45 %/oC respectively due to non-radiative effects. Quasi three level laser transition is more temperature dependent because it terminal level is close to the ground state which suffers from higher phonon-ion interaction rather than four level laser system.

scholarly journals Controlled Synthesis, Characterization and Magnetic Properties of Unsymmetrical Heterodinuclear CuIIMII (M = Co, Mn and Cd) Complexes in Alkoxo Bridged Acyclic Ligand Environment

2020 ◽  
Vol 32 (9) ◽  
pp. 2284-2292
Author(s):  
DIPESH GHOSH
Keyword(s):  
Ground State ◽  
Spectral Studies ◽  
Controlled Synthesis ◽  
Site Specificity ◽  
Magnetic Studies ◽  
X Ray ◽  
X Ray Crystallography ◽  
Synthetic Procedure ◽  
Binucleating Ligands ◽  
Spin Ground State

This work reports the syntheses of heterodinuclear Cu(II)-Co(II), Cu(II)-Mn(II) and Cu(II)-Cd(II) complexes following a convenient single-pot synthetic procedure using the two asymmetric binucleating ligands. Site-specificity offered by one of the ligands' arms towards Cu(I) center has been successfully exploited here, avoiding all sorts of impending scrambling reactions. X-ray crystallography and ESImass spectral studies have been used to prove the exclusivity of these products. Magnetic studies at variable temperatures (4-300 K) have been proved inadequate to assign any spin-ground state for Cu(II)-Co(II) and Cu(II)-Mn(II) compounds.

A molecular ferromagnet with Tc = 3.3 K and an high spin ground state in trinuclear oxo-centred mixed-valence carboxylates

Polyhedron ◽  
1996 ◽  
Vol 15 (5-6) ◽  
pp. 1041-1044 ◽  
Author(s):  
Zhang Shi-Wei ◽  
Wei Yong-Ge ◽  
Liu Qun ◽  
Shao Mei-Cheng ◽  
Zhou Wen-Sheng
Keyword(s):  
High Spin ◽  
Ground State ◽  
Mixed Valence ◽  
Spin Ground State
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