Two-electron F' centers in alkali halides: a saddle point approach. I. General and semicontinuum analyses
| dc.creator | Georgiev, Mladen | |
| dc.date | 2006-08-16 | |
| dc.date.accessioned | 2026-07-07T07:19:42Z | |
| dc.date.available | 2026-07-07T07:19:42Z | |
| dc.description | The F' center in an alkali halide forms when an anion vacancy traps two electrons which is the prerequisite of a diatomic molecule. Indeed, the center may displace left or right along <110> in a (110) plane, due to its coupling to the B_{1u} vibrational mode of <110> polarization respectively. On jumping from the initial position to the final position the F' center passes through a saddle point which configuration is molecule-like being conformed by two neighboring semi-vacancies along <110>. Each semi-vacancy traps one electron to change its effective charge from +1/2 to -1/2 formin a semi-F' center. We ouline the basic theory so as to perform calculations on the F' eigenenergies in the two configurations to see which one of them is more favorable. | |
| dc.description | 14 pages including 2 figures and 1 table, all pdf format | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0608360 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0608360 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/114721 | |
| dc.subject | Materials Science | |
| dc.subject | Other Condensed Matter | |
| dc.title | Two-electron F' centers in alkali halides: a saddle point approach. I. General and semicontinuum analyses | |
| dc.type | text |