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Volumn 49, Issue 11, 1994, Pages 7345-7356

Raman spectroscopy of the paramagnetic spin flip in Cd1-xMnxTe, the role of band-gap excitons as intermediate states, and optically detected electron-nuclear double resonance

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EID: 11644278490     PISSN: 01631829     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevB.49.7345     Document Type: Article
Times cited : (18)

References (27)
  • 1
    • 84926898205 scopus 로고    scopus 로고
    • S. Rodriguez and A. K. Ramdas, in Highlights of Condensed Matter Theory, Proceedings of the International School of Physics ``Enrico Fermi,'' Course LXXXIX, Varenna, 1983, edited by F. Bassani, F. Fumi, and M.P. Tosi (North Holland, Amsterdam, 1985), p. 369; in Light Scattering in Solids VI, edited by M. Cardona and G. Güntherodt, Topics in Applied Physics Vol. 68 (Springer, Berlin, 1991), p. 137.
  • 6
    • 84926879649 scopus 로고    scopus 로고
    • We apply the usual notation a(b,c)d, where a and d are the wave vector directions of the incident and scattered light and b and d the polarization directions, respectively.
  • 8
    • 84926917040 scopus 로고    scopus 로고
    • Some care has to be taken when applying circular polarization of the incident and (or) scattered light in the Faraday orientation (vecB parallel z): Following the usual definition, in left (σsup +) or right (σ-) circular polarization the electric field vectors EL and ER rotate in counterclockwise or clockwise directions when facing into the oncoming beam. A left hand circularly polarized photon (σsup +) has a helicity + hbar, and vice versa for σ-. If the sense of rotation of the field is preserved when changing the direction of propagation ( veckz rightarrow - veckz), the helicity changes its sign. The transition operators in the dipole approximation for the absorption of a circularly polarized quantum of radiation is [ beginarray{l σ^+,σ^ endarray= beginarray{l vecrL, vecrR endarray= frac1{2( vecx pm i vecy) ] Thus the raising operator corresponding to vecrL only forms nonvanishing matrix elements between an initial state with the angular momentum n hbar and a final state with (n +1 ) hbar. In the case of the emission of a quantum σ pm the operator ( vecrL,R) applies and the initial state n hbar is connected to the state (n pm 1) hbar. Accordingly, the total angular momentum is preserved in every case. Thus, between levels of fixed angular momenta differing by hbar, quanta of the same polarization σsup + or σ- are both emitted or absorbed. [For details see B. H. Bransden and C. J. Joachain, Physics of Atoms and Molecules (Longman Scientific & Technical, Harlow, 1983), pp. 175 and 213.]


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.