Perturbed-angular-correlation spectroscopy of the fluctuating hyperfine interaction at Cd-donor pairs in silicon: An approach to electronic transitions at impurities in semiconductors

1993 ◽  
Vol 47 (12) ◽  
pp. 6990-7004 ◽  
Author(s):  
Norbert Achtziger ◽  
Wolfgang Witthuhn
Keyword(s):  
Hyperfine Interaction ◽  
Angular Correlation ◽  
Perturbed Angular Correlation ◽  
Correlation Spectroscopy ◽  
Electronic Transitions ◽  
Perturbed Angular Correlation Spectroscopy ◽  
Impurities In Semiconductors

Defects in CdS: In detected by perturbed angular correlation spectroscopy (PAC)

1991 ◽  
Vol 50 (1-4) ◽  
pp. 159-164 ◽  
Author(s):  
R. Magerle ◽  
M. Deicher ◽  
U. Desnica ◽  
R. Keller ◽  
W. Pfeiffer ◽  
...  
Keyword(s):  
Angular Correlation ◽  
Perturbed Angular Correlation ◽  
Correlation Spectroscopy ◽  
Perturbed Angular Correlation Spectroscopy

scholarly journals Perturbed Angular Correlation Studies in SrTiO3 Single Crystals

2000 ◽  
Vol 55 (1-2) ◽  
pp. 237-241
Author(s):  
P. de la Presa ◽  
K. P. Lieb ◽  
M. Uhrmacher ◽  
L. Ziegeler
Keyword(s):  
Angular Correlation ◽  
Perturbed Angular Correlation ◽  
Hyperfine Interactions ◽  
Correlation Spectroscopy ◽  
Quadrupole Frequency ◽  
Perturbed Angular Correlation Spectroscopy ◽  
Temperature Range ◽  
Field Gradients ◽  
Electronic Defects ◽  
Asymmetry Parameters

The quadrupole hyperfine interactions of 111Cd/111 In probe nuclei in single-crystalline SrTiO3 perovskite samples were investigated using Perturbed Angular Correlation spectroscopy. Three electric field gradients were detected and their fractions and hyperfine parameters were measured in the temperature range from 26 to 700 K. The fraction f0 having a vanishing quadrupole frequency, as expected for 111Cd on substitutional sites in a cubic lattice, starts to develop around 300 K and reaches 100% at 700 K. Two well-defined EFG's having closely lying quadrupole frequencies and asymmetry parameters of ωQi = 49.1(3) Mrad/s, 77, η0= 0.10(2) and ωQ2 = 51.8(3) Mrad/s, η2 = 0.12(2), at room temperature, were identified in the temperature range from 250 to 530 K, and their (100) orientation in the lattice was determined. They are associated with electronic defects at the probe atoms.

Hafnium, cadmium and indium impurities in 4H-SiC observed by perturbed angular correlation spectroscopy

1997 ◽  
Vol 6 (10) ◽  
pp. 1436-1439 ◽  
Author(s):  
T. Licht ◽  
N. Achtziger ◽  
D. Forkel-Wirth ◽  
K. Freitag ◽  
J. Grillenberger ◽  
...  
Keyword(s):  
Angular Correlation ◽  
Perturbed Angular Correlation ◽  
Correlation Spectroscopy ◽  
Perturbed Angular Correlation Spectroscopy
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