Resonance Raman scattering in InAs near the E1 gap |
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| Authors: | GW Rubloff E Anastassakis FH Pollak |
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| Institution: | Department of Physics, Brown University, Providence, Rhode Island 02912, U.S.A.;Department of Physics, Northeastern University, Boston, Massachusetts 02115, U.S.A.;Department of Physics, Belfer Graduate School of Science, Yeshiva University, New York, New York 10033, U.S.A. |
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| Abstract: | Measurements of resonance Raman scattering in InAs at 77°K near the E1 gap have been extended to 2.73 eV. The peak in the resonance curve appears at about 2.66 eV, 70 meV above the optical gap, and gives a larger temperature shift of the resonance than previously reported. Resonance lineshapes are obtained for allowed TO and LO and for forbidden LO phonon scattering. The forbidden scattering intensities are consistent with selection rules predicted for linear q-dependent and/or surface electric field induced scattering mechanisms. |
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