@article{alexson_bergman_dutta_kim_komirenko_nemanich_lee_stroscio_yu_1999, title={Confined phonons and phonon-mode properties of III–V nitrides with wurtzite crystal structure}, volume={263-264}, ISSN={0921-4526}, url={http://dx.doi.org/10.1016/S0921-4526(98)01423-9}, DOI={10.1016/s0921-4526(98)01423-9}, abstractNote={Stimulated by the recent interest in the use of nitride-based III–V wurtzite structures for optoelectronic and electronic devices, this paper reports on the application of the Loudon model for uniaxial crystals to derive the Fröhlich interaction Hamiltonian as well as the electron–optical-phonon scattering rate in wurtzite crystals. This paper also presents experimental analyses of the mode behavior of phonons in wurtzite crystals.}, journal={Physica B: Condensed Matter}, publisher={Elsevier BV}, author={Alexson, D and Bergman, Leah and Dutta, Mitra and Kim, K.W and Komirenko, S and Nemanich, Robert J and Lee, B.C and Stroscio, Michael A and Yu, SeGi}, year={1999}, month={Mar}, pages={510–513} }
 @article{belenky_dutta_b. gorfinkel_haddad_iafrate_kim_kisin_luryi_stroscio_sun_et al._1999, title={Tailoring of optical phonon modes in nanoscale semiconductor structures: role of interface-optical phonons in quantum-well lasers}, volume={263-264}, ISSN={0921-4526}, url={http://dx.doi.org/10.1016/S0921-4526(98)01410-0}, DOI={10.1016/S0921-4526(98)01410-0}, abstractNote={This paper discusses the concept of enhancing semiconductor laser performance through tailoring of scattering rates of confined polar-optical phonons. Studies of optically pumped intersubband scattering in coupled quantum-well lasers have demonstrated that interface-phonon-assisted transitions are important in such structures; furthermore, simple analytical expressions have been derived that indicate the importance of interface-phonon scattering in quantum-well lasers. These calculations reveal that the interface-phonon-assisted transitions are dominant for small quantum well dimensions of approximately 40 Å; such dimensions are typical of novel lasers including both the unipolar quantum cascade laser and the tunneling injection laser. Recent numerical calculations have confirmed these effects and have extended them to indicate how confined and interface phonons also affect critical laser properties such as optical gain. The application of confined phonon effects to intersubband lasers is one of the most important applications of confined-phonon physics to the present time.}, journal={Physica B: Condensed Matter}, publisher={Elsevier BV}, author={Belenky, Gregory and Dutta, Mitra and B. Gorfinkel, Vera and Haddad, George I. and Iafrate, G.J. and Kim, K.W. and Kisin, Mikhail and Luryi, Serge and Stroscio, Michael A. and Sun, J.P. and et al.}, year={1999}, month={Mar}, pages={462–465} }
 @article{yu_pevzner_kim_stroscio_1998, title={Electrophonon resonance in cylindrical quantum wires}, volume={58}, ISSN={0163-1829 1095-3795}, url={http://dx.doi.org/10.1103/PhysRevB.58.3580}, DOI={10.1103/physrevb.58.3580}, number={7}, journal={Physical Review B}, publisher={American Physical Society (APS)}, author={Yu, SeGi and Pevzner, V. B. and Kim, K. W. and Stroscio, Michael A.}, year={1998}, month={Aug}, pages={3580–3583} }
 @article{teng_sun_haddad_stroscio_yu_kim_1998, title={Phonon assisted intersubband transitions in step quantum well structures}, volume={84}, ISSN={0021-8979 1089-7550}, url={http://dx.doi.org/10.1063/1.368277}, DOI={10.1063/1.368277}, abstractNote={We evaluate effects of heterointerfaces on optical phonon modes and phonon assisted electron intersubband transition rates in step quantum well structures for intersubband lasers. Various phonon modes and electron–phonon interaction Hamiltonians, including the interface modes, confined longitudinal-optical modes, and half space modes in the quantum well structures are calculated based on the macroscopic dielectric continuum model and microscopic analysis. The transfer matrix method is used to calculate the interface modes. The intersubband transition rates due to electron–phonon scattering by these phonon modes are evaluated using Fermi’s golden rule, with the electron wave functions obtained by solving the Schrödinger equation for the heterostructures under investigation. Our results show that, compared with the transition rates in the same structures calculated using the bulk phonon modes and the bulk Fröhlich interaction Hamiltonian, the electron interface–phonon interactions give significantly larger transition rates up to an order of magnitude. Therefore, the effects of localized phonon modes, especially the interface modes, must be taken into consideration for optimal device design.}, number={4}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Teng, H. B. and Sun, J. P. and Haddad, G. I. and Stroscio, Michael A. and Yu, SeGi and Kim, K. W.}, year={1998}, month={Aug}, pages={2155–2164} }
 @article{yu_kim_stroscio_iafrate_sun_haddad_1997, title={Transfer matrix method for interface optical-phonon modes in multiple-interface heterostructure systems}, volume={82}, ISSN={0021-8979 1089-7550}, url={http://dx.doi.org/10.1063/1.365649}, DOI={10.1063/1.365649}, abstractNote={Interactions of carriers with interface optical phonons dominate over other carrier–phonon scatterings in narrow quantum-well structures. Herein, a transfer matrix method is used to establish a formalism for determining the dispersion relations, electrostatic potentials, and Fröhlich interaction Hamiltonians of the interface optical phonons for multiple-interface heterostructure systems within the framework of the macroscopic dielectric continuum model. This method facilitates systematic calculations for complex structures where the conventional method is very difficult to implement. Several specific cases are treated to illustrate the advantages of the general formalism.}, number={7}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Yu, SeGi and Kim, K. W. and Stroscio, Michael A. and Iafrate, G. J. and Sun, J.-P. and Haddad, G. I.}, year={1997}, month={Oct}, pages={3363–3367} }