Infrared and Raman spectroscopy of acceptors in diamond : boron impurities.
Substitutional boron acceptors in nitrogen free, naturally occurring (type IIb) diamonds as well as in man-made diamonds exhibit characteristic Lyman transitions in the infrared, originating in the 1s(p{sub 3/2}):{Gamma}{sub 8} ground state or in the thermally populated 1s(p{sub 1/2}):{Gamma}{sub 7} spin-orbit counterpart. In addition to the infrared Lyman lines having p-like final states, the 1s(p{sub 3/2}) {yields} 1s(p{sub 1/2}) transition ({Delta}{prime}) appears as an electronic Raman line; under the high resolution of a Fabry-Perot interferometer, the {Delta}{prime} line exhibits a Jahn-Teller splitting. A comparison of the infrared and Raman spectra of boron-doped natural and {sup 13}C diamonds shows self-energy shifts in their corresponding features. The theoretical expression for the absolute cross section of the electronic Raman line at {Delta}{prime} and that experimentally deduced from an intercomparison of intensities of {Delta}{prime}, Brillouin components and the zone center optical phonon, recorded in the same experiment, yield the acceptor concentration. The Zeeman effect of {Delta}{prime} exhibits its predicted eight components and the four transitions within the {Gamma}{sub 8} multiplet. A theory formulated in terms of the pronounced hole mass anisotropy explains the observed level ordering, polarizations of the Zeeman components, and the sign and magnitude of the g-factors of the hole. Besides being of basic scientific interest, spectroscopy of acceptors and donors is significant in characterizing diamond as a material for solid state electronics.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); National Science Foundation (NSF)
- DOE Contract Number:
- DE-AC02-06CH11357
- OSTI ID:
- 943158
- Report Number(s):
- ANL/MSD/JA-37918; PSSABA; TRN: US201002%%562
- Journal Information:
- Physica Status Solidi A, Vol. 181, Issue 1 ; Sep. 16, 2000; ISSN 0031-8965
- Country of Publication:
- United States
- Language:
- ENGLISH
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