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Electrically detected electron paramagnetic resonance in germanium single crystals
| Content Provider | Semantic Scholar |
|---|---|
| Author | Pakulls, E. J. |
| Copyright Year | 1983 |
| Abstract | Abstract The results of ultrahigh sensitivity EPR studies of Ge single crystals are discussed. Maximum sensitivity was achieved by using high Q microwave resonant samples together with an electric detection technique. Under subband-gap optical excitation, two sets of lines were detected: four lines with axial symmetry about the four 〈111〉 axes with g ∥ = 0.34 and g ⊥ = 1.94, and 24 lines with g ∥ = 0.73 and g ⊥ = 1.89, axially symmetric about 〈111〉 axes with a sixfold 1.2° distortion. Detection involved monitoring the absorption of energy from the microwave electric field by photoexcited electrons. Due to spin-dependent scattering of the electrons by dangling bonds located in the core of dislocations within the crystal, a resonant change in this absorption was observed on each passage through spin resonance. Both increases and decreases in the absorption were observed, depending on sample characteristics. The spin-dependent scattering was observed to persist for hours after the removal of optical excitation, indicating the existence of a conducting dislocation band with a very long lifetime. |
| Starting Page | 490 |
| Ending Page | 508 |
| Page Count | 19 |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/0022-2364(83)90301-3 |
| Volume Number | 51 |
| Alternate Webpage(s) | https://cloudfront.escholarship.org/dist/prd/content/qt34q6h3z7/qt34q6h3z7.pdf?t=p0vimj |
| Alternate Webpage(s) | https://doi.org/10.1016/0022-2364%2883%2990301-3 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
