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Chapter 5 Optical Properties
No full text[No abstract available]56C225292Abstreiter, G., Bmgger, H., Wolf, T., Jorke, H., Herzog, H.J., (1985) Phys. Rev. Utters, 54, p. 2441Alben, R., Wearie, D., Smith Jr., J.E., Brodsky, M.H., (1975) Phys. Rev. B, 11, p. 2271Alonso, M.I., Winer, K., (1989) Phys. Rev. B, 39, p. 10056Alonso, M.I., Cerdeira, F., Niles, D., Cardona, M., Kasper, E., Kibbel, H., (1989) J Appl. Phys., 66, p. 5645Araujo Silva, M.A., Ribeiro, E., Schulz, P.A., Cerdeira, F., Bean, J.C., (1996) Phys. Rev. B, 53, p. 15871Araujo Silva, M.A., Ribeiro, E., Schulz, P.A., Cerdeira, F., Bean, J.C., (1996) J. Raman. Spectrosc., 27, p. 257Araujo Silva, M.A., Rodrigues, P.A.M., Cerdeira, F., Bean, J.C., (1995) Proceedings of the 22nd International Conference on the Physics of Semiconductors, p. 1540. , Lockwood D.J. (Ed), World Scientific, SingaporeAspnes, D.E., (1973) Surf. Sci., B 10, p. 4228Aspnes, D.E., (1980) Handbook on Semiconductors, p. 109. , Moss T.S. (Ed), North Holland, AmsterdamAspnes, D.E., Studna, A.A., (1983) Phys. Rev., 27, p. 985Bassani, F., (1975) Electronic States and Optical Transitions in Solids, , Pergamon, LondonBastard, G., (1981) Phys. Rev. B, 24, p. 5693Bean, J.C., Sheng, T.T., Fiory, A.T., Nakamura, S., Robinson, J.K., (1984) J. Vac. Sci. Technol., A, 2, p. 436Benoit à la Guillame, C., Voos, M., Petroff, Y., (1974) Phys. Rev., B 10, p. 4995Brafman, O., Araujo Silva, M.A., Cerdeira, F., Manor, R., Bean, J.C., (1995) Phys. Rev. B, 51, p. 17800Brasil, M.J.S.P., Nahory, R.E., Tamargo, M.C., Schwartz, S.A., (1993) Appl. Phys. Letters, 63, p. 2688Brey, L., Tejedor, C., (1987) Phys. Rev. Letters, 59, p. 1022Brugger, H., Friess, E., Abstreiter, G., Kasper, E., Kibbel, H., (1988) Semic. Sci. Technol, 3, p. 1166Brugger, H., Reiner, H., Abstreiter, G., Jorke, H., Herzog, H.J., Kasper, E., (1986) Superlattices and Microstructures, 2, p. 451Brunner, J., Menczingar, U., Gail, M., Friess, E., Abstreiter, G., (1992) Thin Solid Films, 222, p. 27Brya, W.J., (1973) Solid State Commun., 12, p. 253Cardona, M., (1969) Modulation Spectroscopy, Solid State Physics, , Seitzand F., and Turnbull D. (Eds), Academic Press, New York Supl.11Cardona, M., Pollak, E.H., (1966) Phys. Rev., 142, p. 530Cardona, M., (1982) Light Scattering in Solids II. Topics in Applied Physics, 50, p. 19. , Springer, HeidelbergCerdeira, F., (1993) Brazilian J. of Phys., 23, p. 3Cerdeira, R., Alonso, M.I., Niles, D., Garriga, M., Cardona, M., Kasper, E., Kibbel, H., (1989) Phys. Rev. B, 40, p. 1361Cerdeira, R., Dreybrodt, W., Cardona, M., (1972) Solid State Commun, 10, p. 591Cerdeira, R., Pinczuk, A., Bean, J.C., (1985) Phys. Rev. B, 31, p. 1202Cerdeira, R., Pinczuk, A., Bean, J.C., Batlogg, B., Wilson, B., (1984) Appl. Phys. Letters, 45, p. 1138Cohen, M.L., Chelinkowsky, J.R., (1989) Electronic Structure and Optical Properties of Solids, Springer Solid State Science, 75, , Springer, BerlinDafesh, D.A., Arbet, V., Wang, K.L., (1990) Appl. Phys. Letters, 56, p. 1498Dafesh, D.A., Wang, K.L., (1992) Phys. Rev. B, 45, p. 1712Dahrma-Wardana, M.W.C., Aers, G., Lockwood, D.J., Baribeau, J.-M., (1990) Phys. Rev. B, 41, p. 5319Dahrma-Wardana, M.W.C., Lockwood, D.J., Baribeau, J.-M., Houghton, D.C., (1986) Phys. Rev. B, 34, p. 3034Dahrma-Wardana, M.W.C., Zhang, P.X., Lockwood, D.J., (1993) Phys. Rev. B, 48, p. 11960de Gironcoli, S., (1992) Phys. Rev. B, 46, p. 2412de Gironcoli, S., Baroni, S., (1992) Phys. Rev. Letters, 69, p. 1959de Gironcoli, S., Molinari, E., Schorer, R., Abstreiter, G., (1993) Phys. Rev. B, 48, p. 8959Dismukes, J.P., Ekstrum, L., Paff, R.P., (1964) J. Phys. Chem., 68, p. 3201Dutrarte, D., Brémond, G., Soufi, A., Benyatton, T., (1991) Phys. Rev. B, 44, p. 11525Feldman, D.W., Ashkin, M., Parker, J.H., (1966) Phys. Rev. Letters, 17, p. 1209Freeouf, J.L., Tsang, J.C., LeGoues, F.K., Iyer, S.S., (1990) Phys. Rev. Letters, 64, p. 315Friess, E., Brugger, H., Eberi, K., Krötz, G., Abstreiter, G., (1989) Solid State Commun., 69, p. 899Fukatsu, S., Yoshida, H., Fujiwara, A., Takahashi, Y., Shiraki, Y., (1992) Appl. Phys. Letters, 61, p. 804Gammon, D., Shanabrook, B.V., Katzer, D., (1991) Phys. Rev. Letters, 67, p. 1547Glaser, E.R., Kennedy, T.A., Godbey, D.J., Thompson, P.E., Wang, K.L., Chern, C.H., (1993) Phys. Rev., B 47, p. 1305Gross, E.F., Sokolov, S.S., Titkov, A.N., (1972) Fiz. Tverd. Tela, 14, p. 2004(1973) [Sov. Phys. Solid State., 14, p. 1732Haug, H., Koch, S.W., (1990) Quantum Theory of Optical and Electronic Properties of Semiconductors, , World Scientific, SingaporeHybertsen, M.S., Schluter, M., People, R., Jackson, S.A., Lang, D.V., Pearsall, T.P., Bean, J.C., Bevk, J., (1988) Phys. Rev. B, 37, p. 1095Jusserand, B., Cardona, M., (1989) Light Scattering in Solids V. Topics in Applied Physics, 66, p. 49. , Cardona M., and Güntherodt G. (Eds), Springer, HeidelbergKane, E.O., (1966) Semiconductors and Semimetals., 1, p. 75. , Williardson K., and Beer A.C. (Eds), Academic Press, New YorkKeating, P.N., (1966) Phys. Rev., 145, p. 637Kline, J.S., Pollak, F.H., Cardona, M., (1968) Helv. Phys. Acta, 41, p. 968Lang, D.V., People, R., Bean, J.C., Sergent, M., (1985) Appl. Phys. Letters, 47, p. 1333Lannin, J.S., (1977) Phys. Rev. B, 16, p. 1510Lemos, V., Pilla, O., Montagna, M., de Souza, C.F., (1995) Superlattices and Microstructures, 17, p. 51Liu, H.W., Ferreira, R., Bastard, G., Deldane, C., Palmier, J., Etienne, B., (1989) Appl. Phys. Letters., 54, p. 2082Lockwood, D.J., (1992) Surface Sci., 267, p. 438Lockwood, D.J., Dahrma-Wardana, M.W.C., Aers, C.G., Baribeau, J.-M., (1988) Appl. Phys. Letters, 52, p. 2040Lockwood, D.J., Rajan, K., Fenton, E.W., Baribeau, J.-M., Denhoff, M.W., (1987) Solid State Commun., 61, p. 465Lyutovich, A.S., Lyutovich, K.L., Popov, V.P., Safronov, L.N., (1985) Phys. Status Solidi B, 129, p. 313Meczingar, U., Abstreiter, G., Olajos, J., Grimmeis, H., Kibbel, H., Prestig, H., Kasper, E., (1993) Phys. Rev. B, 47, p. 4099Menendez, J., Pinczuk, A., Bevk, J., Mannaerts, J.P., (1988) J. Vac. Sci. Technoi, B, 6, p. 1306Mitchard, G.S., McGill, T.C., (1982) Phys. Rev. B, 25, p. 5351Narvaez, G., Torriani, I.L., Cerdeira, F., Bean, J.C., (1997) Brazilian Journal of Physics, 27, p. 632Noël, J.-P., Rowell, N.L., Houghton, D.C., Perovic, D.D., (1990) Appl. Phys. Letters, 57, p. 1037Noël, J.-P., Rowell, N.L., Houghton, D.C., Wang, A., Perovic, D.D., (1992) Appl. Phys. Letters, 61, p. 690Pearsall, T.P., (1992) Appl. Phys. Utters, 60, p. 1712Pearsall, T.P., Bevk, J., Bean, J.C., Bonar, J., Mannaerts, J.P., Ourmazd, A., (1989) Phys. Rev. B, 39, p. 3741Pearsall, T.P., Vandenberg, J.M., Hull, R., Bonar, J.M., (1989) Phys. Rev. Utters, 63, p. 2104Pearsall, T.P., Bevk, J., Feldman, L.C., Bonar, J.M., Mannaerts, J.P., Ourmazd, A., (1987) Phys. Rev. Utters, 58, p. 729Pearsall, T.P., Polatglou, H., Prestig, H., Kasper, E., (1995) Proceedings of the 22nd International Conference on the Physics of Semiconductors, p. 715. , Lockwood D.J. (Ed), World Scientific, SingaporePearsall, T.P., Pollak, F.H., Bean, J.C., Hull, R., (1986) Phys. Rev., B 33, p. 6821People, R., (1985) Phys. Rev. B, 32, p. 1405People, R., Bean, J.C., (1986) Appl. Phys. Utters, 48, p. 538Philipp, H.R., Ehrenreich, H., (1967) Semiconductors and Semimetals, 3, p. 93. , Academic Press, New YorkPilla, O., Lemos, V., Montagna, M., (1994) Phys. Rev. B, 50, p. 11845Pollak, F.H., (1989) Superlattices andMicwstructures, 6, p. 203(1991) Superlattices andMicwstructures, 10, p. 333Pollak, F.H., Shen, H., (1993) Mater. Sci. Eng. R, 10, pp. 275-374Rentz, R., Shlimak, I.S., (1978) Fiz. Tekh. Poloprovodn, 13, p. 719(1978) [Sov. Phys. Semicond., 12, p. 416Renucci, M.A., Renucci, J.B., Cardona, M., (1971) Proceedings of the Conference on Light Scattering in Solids, p. 326. , Balkanski M. (Ed), Flammarion, ParisRenucci, M.A., Renucci, J.B., Zehyer, R., Cardona, M., (1974) Phys. Rev. B, 10, p. 4309Ribeiro, E., Cerdeira, F., Teschke, O., (1997) Solid State Commun, 101, p. 327Robbins, D.J., Canaham, L.T., Barnett, S.J., Pitt, A.D., Calcott, D., (1992) J. Appl. Phys., 71, p. 1407Rodrigues, P.A.M., Araujo Silva, M.A., Cerdeira, F., Bean, J.C., (1993) Phys. Rev. B, 48, p. 1804Rodrigues, P.A.M., Cerdeira, F., Bean, J.C., (1992) Phys. Rev. B, 46, p. 15263Rodrigues, P.A.M., Cerdeira, E., Cardona, M., Kasper, E., Kibbel, H., (1993) Solid State Commun., 86, p. 637Rowell, N.L., Noël, J.-P., Houghton, D.C., Wang, A., Lechyshyn, L.C., Thewalt, M.L.W., Perovic, D.D., (1993) J. Appl. Phys., 74, p. 2790Ryotov, S.M., (1956) Akoust. Zh., 2, p. 71(1956) Soviet Phys. Acoust, 2, p. 68Schmidt, U., Christensen, N.E., Alouani, M., Cardona, M., (1991) Phys. Rev. B., 43, p. 14597Schmidt, U., Christensen, N.E., Cardona, M., (1990) Phys. Rev. Letters, 65, p. 2610Schmidt, U., Humlicek, J., Lukes, F., Cardona, M., Prestig, H., Kibbel, H., Kasper, E., Abstreiter, G., (1992) Phys. Rev. B, 45, p. 6793Schmidt, U., Lukes, E., Christensen, N.E., Alouani, M., Cardona, M., (1990) Phys. Rev. Letters, 65, p. 1933Schorer, R., Abstreiter, G., de Gironcoli, S., Molinari, E., Kibbel, H., Prestig, H., (1994) Phys. Rev. B, 49, p. 5406Schorer, R., Friess, E., Eberl, K., Abstreiter, G., (1991) Phys. Rev. B, 44, p. 1772Schorer, R., Abstreiter, G., Kibbel, H., Prestig, H., (1994) Phys. Rev. B, 50, p. 18211Schorer, R., Abstreiter, G., Kibbel, H., Prestig, H., Tserbak, C., Theodorou, G., (1995) Solid State Commun, 93, p. 1025Spitzer, J., Thonke, K., Sauer, R., Kibbel, H., Herzog, H.-J., Kasper, E., (1992) Appl. Phys. Letters, 60, p. 1729Sturm, J.C., Manoharan, H., Lenchyshyn, L.C., Thewalt, M.L.W., Rowell, N.L., Noel, J.-P., Houghton, D.C., (1991) Phys. Rev. Utters, 66, p. 1362Sturm, J.C., Amour, Y.St., Lacroix, A., Thewalt, M.L.W., (1994) Appl. Phys. Utters, 64, p. 2291Sunamura, H., Usami, N., Shiraki, Y., (1995) Appl. Phys. Letters, 66, p. 3024Terashima, K., Tajima, M., Ikarashi, N., Niino, T., Tatsumi, T., (1991) Jap. J. of Appl. Phys., 30, p. 3601Terashima, K., Tajima, M., Tatsumi, T., (1990) Appl. Phys. Utters, 57, p. 1925Therodorou, G., Kelires, P.C., Tserbak, C., (1994) Phys. Rev. B, 50, p. 18355Tognini, P., Andreani, L.C., Geddo, M., Stella, A., Cheyssac, P., Kofman, R., Migliory, A., (1996) Phys. Rev. B, 53, p. 6992Tserbak, C., Polatoglou, H.M., Theodorou, G., (1991) Phys. Rev. B, 44, p. 3467Turton, R., Jaros, M., (1996) Appl. Phys. Utters, 69, p. 2891Usami, N., Fukatsu, S., Shiraki, Y., (1992) Appl. Phys. Utters, 61, p. 1706Van de Walle, C.G., Martin, R.M., (1986) Phys. Rev. B, 34, p. 5621Wachter, M., Schäffler, R., Herzog, H.-J., Thonke, T., Sauer, R., (1993) Appl. Phys. Utters, 63, p. 376Wang, L.W., Zunger, A., (1994) Phys. Rev. Utters, 73, p. 1039Weber, J., Alonso, M.I., (1989) Phys. Rev. B, 40, p. 5683Wilke, S., Mašek, J., Velicky, V., (1990) Phys. Rev. B, 41, p. 3769Wong, K.B., Jaros, M., Morrison, I., Hagon, J.P., (1988) Phys. Rev. Utters, 60, p. 221Xiao, X., Liu, C.W., Sturm, J.C., Lenchyshyn, L.C., Tewalt, M.L., Gregory, R.B., Fejes, P., (1992) Appl. Phys. Letters, 60, p. 2135Yin, Y., Yan, D., Pollak, F.H., (1991) Phys. Rev. B, 44, p. 5955Yu, P.Y., Cardona, M., (1995) Fundamentals of Semiconductors, , Springer, Berlin Chapters 6 and 7Zachai, R., Eberl, K., Abstreiter, G., Kibbel, H., (1990) Phys. Rev. Letters, 64, p. 1055Zeller, Ch., Abstreiter, G., (1886) Z. Phys., B, 64, p. 137Zhang, E.X., Lockwood, D.J., Labbé, H.J., Baribeau, J.-M., (1992) Phys. Rev. B, 46, p. 9881Zhang, P.X., Lockwood, D.J., Baribeau, J.-M., (1992) Can. J. Phys., 70, p. 843Zhang, P.X., Lockwood, D.J., Baribeau, J.-M., (1993) Appl. Phys. Letters, 62, p. 267Zucker, J.E., Pinczuk, A., Chemla, D.S., Gossard, A., Wiegman, W., (1984) Phys. Rev. Letters, 53, p. 1280Zucker, J.E., Pinczuk, A., Chemla, D.S., Gossard, A., Wiegman, W., (1984) Phys. Rev. B, 29, p. 706
Linear-chain-model Interpretation Of Resonant Raman Scattering In Gensin Microstructures
No full textWe use a linear-chain model with bond polarizabilities to simulate the Raman spectrum of a Ge5Si5 microstructure which presents interface roughness both in the atomic scale and in the form of terraces of lateral dimensions equal or superior to 102 Å. The model is not very successful in reproducing the effects of the short range roughness, but simulates effectively the consequences of terracing on the Raman spectrum of our sample. A detailed line shape analysis of one of these Raman lines leads to insights into the electronic states which are responsible for the resonant effects in the Raman cross section.53231587115877Jusserand, B., Cardona, M., (1989) Topics in Applied Physics, 66, p. 49. , Light Scattering in Solids V, edited by M. Cardona and G. Güntherodt, Springer, HeidelbergDharma-wardana, M.W.C., Aers, G.C., Lockwood, D.J., Baribeau, J.M., (1990) Phys. Rev. B, 41, p. 5319Araújo Silva, M.A., Ribeiro, E., Schulz, P.A., Cerdeira, F., Bean, J.C., J. Raman Spectrosc., , to be publishedAlonso, M.I., Cerdeira, F., Miles, D., Cardona, M., Kasper, E., Kibbel, H., (1989) J. Appl. Phys., 66, p. 5645Alonso, M.I., Cardona, M., Kanellis, G., (1989) Solid State Commun., 69, p. 479Schorer, R., Abstreiter, G., De Gironcoli, S., Molinari, E., Kibbel, H., Prestig, P., (1994) Phys. Rev. B, 49, p. 5406De Gironcoli, S., Molinari, E., Schorer, R., Abstreiter, G., (1993) Phys. Rev., 848, p. 8959De Gironcoli, S., Molinari, E., (1994) Solid State Electron., 37, p. 621Brafman, O., Araújo Silva, M.A., Cerdeira, F., Manor, R., Bean, J.C., (1995) Phys. Rev. B, 51, p. 17800Schorer, R., Abstreiter, G., Kibbel, H., Prestig, H., (1994) Phys. Rev. B, 50, p. 18211Schorer, R., Abstreiter, G., Kibbel, H., Prestig, H., Tserbak, C., Theodorou, G., (1995) Solid State Commun., 93, p. 1025Araújo Silva, M.A., Rodrigues, P.A.M., Cerdeira, F., Bean, J.C., (1995) Proceedings of the 21st International Conference on the Physics of Semiconductors, p. 1540. , edited by by D. J. Lockwood World Scientific, SingaporeRodrigues, P.A.M., Araújo Silva, M.A., Cerdeira, F., Bean, J.C., (1993) Phys. Rev. B, 48, p. 18024Rodrigues, P.A.M., Cerdeira, F., Cardona, M., Kasper, E., Kibbel, H., (1993) Solid State Commun., 86, p. 637Cerdeira, F., Alonso, M.I., Niles, D., Garriga, M., Cardona, M., Kasper, E., Kibbel, H., (1989) Phys. Rev. B, 40, p. 1361Hull, R., Bean, J.C., (1991) Semiconductors and Semimetals, 33, p. 1. , Strained-Layer Superlattices: Materials, Science and Technology, edited by T. P. Pearsall, Academic Press, New Yorknotenotenot
Characterization Of Different Length Scales And Periodicities In Ge/si Microstructures By Raman Spectroscopy : Theory And Experiment
No full textThe Raman spectra of samples of the type [(GenSim) N - 1 Gen SiMl x p with n ≈ m ≈ 5 monolayers, M ≈ 200 monolayers and p ≈ 10-20 were measured in the backscattering configuration in the wavenumber range 2-600 cm-1. The experimental results are discussed by comparison with simulated spectra calculated with a linear chain model with bond polarizabilities for the Raman intensities. Comparison between experimental and theoretical spectra gives insights into the sensitivity of the different Raman peaks as a probe of periodicity and interface roughness length scales.273-4257263Rodrigues, P.A.M., Araújo Silva, M.A., Cerdeira, F., Bean, J.C., (1993) Phys. Rev. B, 48, p. 18024Brafman, O., Araújo Silva, M.A., Cerdeira, F., Manor, R., Bean, J.C., (1995) Phys. Rev. B, 51, p. 17800Araújo Silva, M.A., Rodrigues, P.A.M., Cerdeira, F., Bean, J.C., (1995) Proceedings of the 22nd International Conference on the Physics of Semiconductors, p. 1540. , edited by D. J. Lockwood, World Scientific, SingaporeShorer, R., Abstreiter, G., Kibbel, H., Presting, H., Tserbak, C., Theodorou, G., (1995) Solid State Commun., 93, p. 1025Schorer, R., Abstreiter, G., Kibbel, H., Presting, H., (1994) Phys. Rev. B, 50, p. 18211Schorer, R., Abstreiter, G., De Gironcoli, S., Molinari, E., Kibbel, H., Presting, H., (1994) Phys. Rev. B, 49, p. 5406Rodrigues, P.A.M., Cerdeira, F., Cardona, M., Kasper, E., Kibbel, H., (1993) Solid State Commun, 86, p. 637Alonso, M.I., Cerdeira, F., Niles, D., Cardona, M., Kasper, E., Kibbel, H., (1989) J Appl. Phys, 66, p. 5645Cerdeira, F., Alonso, M.I., Niles, D., Garriga, M., Cardona, M., Kasper, E., Kibbel, H., (1989) Phys. Rev. B, 40, p. 1361Dharma-wardana, M.W.C., Aers, G.C., Lockwood, D.J., Baribeau, J.M., (1990) Phys. Rev., 41, p. 5319Jusserand, B., Cardona, M., (1989) Light Scattering in Solids V, 66, p. 49. , edited by M. Cardona and G Güntherodt, Topics in Applied Physics, Springer, HeidelbergHull, R., Bean, J.C., (1991) Semiconductors and Semimetals, 33, p. 1. , edited by T. P. Pearsall, Academic Press, New YorkKasper, E., Herzog, H.J., Dämbkes, H., Abstreiter, G., (1986) Layered Structures and Epitaxy, 56, p. 347. , edited by J. M. Gibson, G. C. Osborn and R. M. Tramp, Materials Research Society Symposia Proceedings, Materials Research Society, Pittsburgh, PAMazzacurati, V., Benassi, P., Ruocco, J., (1988) J. Phys. E, 21, p. 798Lockwood, D.J., Dharma-wardana, M.W.C., Aers, G.C., Baribeau, J.M., (1988) Appl. Phys. Lett., 52, p. 2040Aers, G.C., Dharma-wardana, M.W.C., Schwartz, G.P., Bevk, J., (1989) Phys. Rev. B, 39, p. 1092Kunc, K., Gomes Dacosta, P., (1985) Phys. Rev. B, 32, p. 2010Madelung, O., Schulz, M., Weiss, H., (1982) Landolt-Börnstein, Numerical Data and Functional Relationships in Science and Technology, 17 B. , Springer, New YorkMaradudin, M.A., Burstein, E., (1967) Phys Rev., 164, p. 1081Weber, W., Go, S., Rustagi, K.C., Bilz, H., (1974) Proceedings of the 12th International Conference on the Physics of Semiconductors, p. 194. , edited by M. H. Pilkuhn, Teubner, StuttgartBell, R.J., (1976) Methods Comput. Phys., 15, p. 21
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Evidence For Interface Terraces In Ge/si Quantum Wells Obtained By Raman Scattering
No full textWe show that the change of the laser energy induces a frequency shift and broadening of the Ge-Ge resonant Raman line in Ge5Si5/Si QWs. This is explained by the existence of interfacial terraces, a conclusion supported by the study of QWs of different multiplicities: (i) The Ge-Si line broadens with QW multiplicity suggesting a wider distribution of terraces with increasing number of QWs. (ii) The Ge-Ge vibration is confined and does not propagate into the Si barrier, its line width and frequency depends on the QW width and therefore on the QWs multiplicity. (iii) The number of QWs affects the confined electronic states.219-2201-4502504Gammon, D., Shamabrook, B.V., Katzer, D.S., (1991) Phys. Rev. Lett., 67, p. 1547Grant, J., Menéndez, J., Pinczuk, A., Pfeiffer, L.N., West, K.W., Molinari, E., Baroni, S., (1991) Appl. Phys. Lett., 59, p. 2859Jusserand, B., (1990) Phys. Rev. B, 42, p. 7256Jusserand, B., Mollt, F., Molinari, E., Baroni, S., (1992) Surf. Sci., 267, p. 171Alonso, M.I., Cerdeira, F., Niles, D., Cardona, M., Kasper, E., Kibbel, H., (1989) J. Appl. Phys., 66, p. 5645De Gironcoli, S., Molinari, E., Schorer, R., Abstreiter, G., (1993) Phys. Rev. B, 48, p. 8959. , and references thereinDe Gironcoli, S., Baroni, S., (1992) Proc. XXI Int. Conf. on the Physics of Semiconductors, p. 109. , Beijing, China, 1992, eds. Ping Jiang and Hou-Zhi Zheng (World Scientific, Singapore) and references thereinDe Gironcoli, S., Molinari, E., (1994) Solid State Electronics, 37, p. 621Schorer, R., Abstreiter, G., De Gironcoli, S., Molinari, E., Kibbel, H., Presting, H., (1994) Phys. Rev. B, 49, p. 5406Brasil, M.J.S.P., Nahory, R.E., Tamargo, M.C., Schwarz, S.A., (1993) Appl. Phys. Lett., 63, p. 2688Hull, R., Bean, J.C., (1991) Semiconductors and Semimetals, 33, p. 1. , ed. T.P. Pearsall (Academic Press, New York)Rodrigues, P.A.M., Araújo Silva, M.A., Cerdeira, F., Bean, J.C., (1993) Phys. Rev. B, 48, p. 18024not
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