Vibrational and electronic excitations in isotopically controlled diamonds.

Journal Article · Wed Feb 25 04:00:00 EST 1998 · Curr. Sci.

OSTI ID:938236

Anthony, T R; Alvarenga, A D; Grimsditch, M; Kim, H; Ramadas, A K; Rodriguez, S; Vogelgesang, R

Lattice vibrations of isotopically controlled single crystals of diamond {sup 12}C{sub 1-x}{sup 13}C{sub x}, 0 {le} x {le} (1) are investigated with Raman, Brillouin, and Fourier transform infrared spectroscopy. The variation of the zone center optical phonon frequency and elastic moduli in the context of the virtual crystal approximation and zero-point motion; critical point frequencies as manifested in the two-phonon Raman and infrared spectra are addressed in these studies. The electronic infrared and Raman spectra of holes bound to substitutional boron acceptors in isotopically controlled diamonds show: (1) the Lyman transitions in which the bound states manifest host-related-self-energy shifts; (2) the spin-orbit splitting {Delta}{prime} of the 1s ground state into 1s(p{sub 3/2}) and 1s(p{sub 1/2}), 1s(p{sub 1/2}) being thermally populated; (3) a direct observation of the 1s(p{sub 3/2}) {yields} 1s(p{sub 1/2}) transition as an electronic Raman at {Delta}{prime}, together with its isotopic effects.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: ER
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 938236
• Report Number(s): ANL/MSD/JA-28461
• Journal Information: Curr. Sci., Journal Name: Curr. Sci. Journal Issue: 4 ; Feb. 25, 1998 Vol. 74
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
APPROXIMATIONS
BORON
BOUND STATE
DIAMONDS
GROUND STATES
INFRARED SPECTRA
ISOTOPE EFFECTS
LATTICE VIBRATIONS
MONOCRYSTALS
PHONONS
RAMAN SPECTRA
SPECTROSCOPY