1,722,320 research outputs found
Magnetic Polaron And Fermi Surface Effects On The Esr Spin-flip Scattering Of Eub6 Above Tc ≈ 15 K
No full textThe spin-flip scattering (SFS) between conduction and Eu 2+4f7 (8S7/2) electrons in the paramagnetic phase of EuB6 (T≥TC ≈ 15K) is studied by electron spin resonance (ESR) and magneto-resistance (MR) experiments. The observed Dysonian resonance suggests a metallic environment for the Eu 2+ ions. ESR at high field, H ≅ 12.05kG (v ≅ 33.9 GHz), shows an anisotropic line width with cubic symmetry. ESR at low-field, 1.46kG (4.1 GHz) and 3.35kG (9.5 GHz), shows broader line width and smaller anisotropy than at higher field. The narrowing and anisotropy of the line width at high fields are indicative of a homogeneous resonance where the line width is mainly governed by the SFS mechanism due to the exchange interaction between Eu 2+ 4f7 and conduction electrons. Besides the negative MR, we found an anisotropic MR with cubic symmetry. These results are interpreted in terms of magnetic polaron and Fermi surface effects. © 2004 Elsevier B.V. All rights reserved.3541-4 SPEC. ISS.326330Hasegawa, A., Yanase, A., (1979) J. Phys. C, 12, p. 5431Massidda, S., Continenza, A., De Pascale, T.M., Monnier, R., (1997) Z. Phys. B: Cond. Mat., 102, p. 83Goodrich, R.G., Harrison, N., Vuillemin, J.J., Teklu, A., Hall, D.W., Fisk, Z., Young, D., Sarrao, J., (1998) Phys. Rev. B, 58, p. 14896Aronson, M.C., Sarrao, J.L., Fisk, Z., Whitton, M., Brandt, B.L., (1999) Phys. Rev. B, 59, p. 4720Sullow, S., Prasad, I., Aronson, M.C., Sarrao, J.L., Fisk, Z., Hristova, D., Lacerda, A.H., Gibbs, D., (1998) Phys. Rev. B, 57, p. 5860Sullow, S., Prasad, I., Aronson, M.C., Bogdanovich, S., Sarrao, J.L., Fisk, Z., (2000) Phys. Rev. B, 62, p. 11626Degiorgi, L., Felder, E., Ott, H.R., Sarrao, J.L., Fisk, Z., (1997) Phys. Rev. Lett., 79, p. 5134Nyhus, P., Yoon, S., Kauffman, M., Cooper, S.L., Fisk, Z., Sarrao, J., (1997) Phys. Rev. B, 56, p. 2717Snow, C.S., Cooper, S.L., Young, D.P., Fisk, Z., Comment, A., Ansermet, J.P., (2001) Phys. Rev. B, 64, p. 174412Broderick, S., Ruzicka, B., Degiorgi, L., Ott, H.R., Sarrao, J.L., Fisk, Z., (2002) Phys. Rev. B, 65, p. 121102Paschen, S., Pushin, D., Schlatter, M., Vonlanthen, P., Ott, H.R., Young, D.P., Fisk, Z., (2000) Phys. Rev. B, 61, p. 4174Fisk, Z., Johnston, D.C., Cornut, B., Von Molnar, S., Oseroff, S., Calvo, R., (1979) J. Appl. Phys., 50, p. 1911Henggeler, W., Ott, H.R., Young, D.P., Fisk, Z., (1998) Solid State Commun., 108, p. 929Young, D.P., (1999) Nature (London), 397, p. 412Feher, G., Kip, A.F., (1955) Phys. Rev., 98, p. 337Dyson, F.J., (1955) Phys. Rev., 98, p. 349Pake, G.E., Purcell, E.M., (1948) Phys. Rev., 74, p. 1184Urbano, R.R., Rettori, C., Barberis, G.E., Torelli, M., Bianchi, A., Fisk, Z., Pagliuso, P.G., Oseroff, S.B., (2002) Phys. Rev. B, 65, p. 180407Noack, M.A., Verhoeven, J.D., (1980) J. Cryst. Growth, 49, p. 595Oseroff, S.B., Calvo, R., (1978) Phys. Rev. B, 18, p. 3041R.R. Urbano, et al., unpublishedSperlich, G., Jansen, K., (1974) Solid State Commun., 15, p. 1105Davidov, D., Maki, K., Orbach, R., Rettori, C., Chock, E.P., (1973) Solid State Commun., 12, p. 62
Noncubic Symmetry In Ca 1-xeu Xb 6 (0.15≲x≤1.00): An Electron-spin-resonance Study
Full text linkThe Eu2+ (4 f7, S=72) g value in Ca1-x Eux B6 (0.15≲x≤1.00) was measured by means of electron spin resonance at two frequencies (fields), 9.4 (≈3.4 kOe) and 34.4 GHz (≈12.1 kOe). The g value was found to be anisotropic and magnetic-field dependent. The amplitude of the anisotropy increases at low temperatures. The observed angular and temperature dependences of the g value suggest tetragonal symmetry caused, presumably, by a distortion along a direction perpendicular to the largest crystal face, the [001] direction. Due to the platelet shape of the samples, part of the anisotropy of the g value can also be attributed to demagnetization effects. The g values decrease at higher fields, which is interpreted in terms of a two-band model involving an exchange interaction between the localized Eu2+ 4 f7 electrons with conduction Eu2+ 5d -like electrons and B 2p -like holes. © 2006 American Institute of Physics.998Etourneau, J., Hagenmuller, P., (1985) Philos. Mag. B, 52, p. 589Young, D.P., (1999) Nature (London), 397, p. 412Zhitomirsky, M.E., Rice, T.M., Anisimov, V.I., (1999) Nature (London), 402, p. 251Degiorgi, L., Felder, E., Ott, H.R., Sarrao, J.L., Fisk, Z., (1997) Phys. Rev. Lett., 79, p. 5134Massidda, S., Continenza, A., De Pascale, T.M., Monnier, R., (1997) Z. Phys. B: Condens. Matter, 102, p. 83Süllow, S., (1998) Phys. Rev. B, 57, p. 5860Booth, C.H., Sarrao, J.L., Hundley, M.F., Cornelius, A.L., Kwei, G.H., Bianchi, A., Fisk, Z., Lawrence, J.M., (2001) Phys. Rev. B, 63, p. 224302Paschen, S., Pushim, D., Schlatter, M., Vonlanthen, P., Ott, H.R., Young, D.P., Fisk, Z., (2000) Phys. Rev. B, 61, p. 4174Wigger, G.A., Walti, Ch., Ott, H.R., Bianchi, A.D., Fisk, Z., (2002) Phys. Rev. B, 66, p. 212410Wigger, G.A., Beeli, C., Felder, E., Ott, H.R., Bianchi, A.D., Fisk, Z., (2004) Phys. Rev. Lett., 93, p. 147203Uimin, G., (1997) Phys. Rev. B, 55, p. 8267Sturm, H., Elschner, B., Hock, K.-H., (1985) Phys. Rev. Lett., 54, p. 1291Altshuler, T.S., Bresler, M.S., (1999) J. Exp. Theor. Phys., 88, p. 1019Süllow, S., Prasad, I., Aronson, M.C., Bogdanovich, S., Sarrao, J.L., Fisk, Z., (2000) Phys. Rev. B, 62, p. 11626Urbano, R.R., Pagliuso, P.G., Rettori, C., Oseroff, S.B., Sarrao, J.L., Schlottmann, P., Fisk, Z., (2004) Phys. Rev. B, 70, p. 140401Urbano, R.R., (2005) Phys. Rev. B, 71, p. 184422Feher, G., Kip, A.F., (1955) Phys. Rev., 98, p. 337. , 0031-899X 10.1103/PhysRev.98.337Dyson, F.J., (1955) Phys. Rev., 98, p. 349. , 0031-899X 10.1103/PhysRev.98.349Pake, G.E., Purcell, E.M., (1948) Phys. Rev., 74, p. 1184Abragam, A., Bleaney, B., (1970) EPR of Transition Ions, , Clarendon, OxfordKunii, S., Uemura, T., Chiba, Y., Kasuya, T., Date, M., (1985) J. Magn. Magn. Mater., 52, p. 271. , 0304-8853 10.1016/0304-8853(85)90277-XKunii, S., (2000) J. Phys. Soc. Jpn., 69, p. 3789Bisch, P.M., Troper, A., Gomes, A.A., (1976) Phys. Rev. B, 13, p. 3902. , 0556-2805 10.1103/PhysRevB.13.3902Troper, A., De Menezes, O.L.T., Lederer, P., Gomes, A.A., (1978) Phys. Rev. B, 18, p. 3709. , 0556-2805 10.1103/PhysRevB.18.3709Barberis, G.E., Davidov, D., Donoso, J.P., Rettori, C., Suassuna, J.F., Dokter, H.D., (1979) Phys. Rev. B, 19, p. 5495. , 0163-1829 10.1103/PhysRevB.19.5495Pagliuso, P.G., Rettori, C., Sarrao, J.L., Cornelius, A., Hundley, M.F., Fisk, Z., Oseroff, S.B., (1999) Phys. Rev. B, 60, p. 13515Calderón, M.J., Wegener, L.G.L., Littlewood, P.B., (2004) Phys. Rev. B, 70, p. 092404Davidov, D., Maki, K., Orbach, R., Rettori, C., Chock, E.P., (1973) Solid State Commun., 12, p. 62
Esr Study Of The Eu2+ G -value In The Metallic Phase Of Cubic Hexaboride Ca1-x Eux B6 (0.15 X≤1.00)
Full text linkThe angular, magnetic field, and temperature dependence of the Eu2+ (4 f7, S=7/2) g -value in Ca1-x Eux B6 (0.15 x≤1.00) is measured by means of electron spin resonance at two microwave frequencies, 9.4 and 34.4 GHz. The g -value is found to be anisotropic and magnetic-field-dependent. The reduction with field of the positive g -shift is interpreted in terms of the exchange interaction between the localized Eu2+ 4 f7 electrons with the conduction Eu2+ 5d -like electrons and B 2p -like holes. The angular, temperature, and x dependence of the anisotropy of the g -value can be attributed to demagnetization effects due to the platelet-like shape of the samples. High-resolution synchrotron x-ray diffraction experiments show the absence of distortions larger than δa/a∼ 10-4. However, a mechanism for the anisotropy based on a weak tetragonal lattice distortion arising from the crystal surface cannot be excluded. © 2006 The American Physical Society.7311Etourneau, J., Hagenmuller, P., (1985) Philos. Mag. B, 52, p. 589. , PMABDJ 1364-2812Young, D.P., Hall, D., Torelli, M.E., Fisk, Z., Sarrao, J.L., Thompson, J.D., Ott, H.R., Zysler, R., (1999) Nature (London), 397, p. 412. , NATUAS 0028-0836 10.1038/17081Zhitomirsky, M.E., Rice, T.M., Anisimov, V.I., (1999) Nature (London), 402, p. 251. , NATUAS 0028-0836 10.1038/46204Degiorgi, L., Felder, E., Ott, H.R., Sarrao, J.L., Fisk, Z., (1997) Phys. Rev. Lett., 79, p. 5134. , PRLTAO 0031-9007 10.1103/PhysRevLett.79.5134Massidda, S., Continenza, A., De Pascale, T.M., Monnier, R., (1997) Z. Phys. B: Condens. Matter, 102, p. 83. , ZPCMDN 0722-3277 10.1007/s002570050267Süllow, S., Prasad, I., Aronson, M.C., Sarrao, J.L., Fisk, Z., Hristova, D., Lacerda, A.H., Gibbs, D., (1998) Phys. Rev. B, 57, p. 5860. , PRBMDO. 0163-1829. 10.1103/PhysRevB.57.5860Booth, C.H., Sarrao, J.L., Hundley, M.F., Cornelius, A.L., Kwei, G.H., Bianchi, A., Fisk, Z., Lawrence, J.M., (2001) Phys. Rev. B, 63, p. 224302. , PRBMDO 0163-1829 10.1103/PhysRevB.63.224302Paschen, S., Pushin, D., Schlatter, M., Vonlanthen, P., Ott, H.R., Young, D.P., Fisk, Z., (2000) Phys. Rev. B, 61, p. 4174. , PRBMDO 0163-1829 10.1103/PhysRevB.61.4174Wigger, G.A., Walti, Ch., Ott, H.R., Bianchi, A.D., Fisk, Z., (2002) Phys. Rev. B, 66, p. 212410. , PRBMDO 0163-1829 10.1103/PhysRevB.66.212410Wigger, G.A., Beeli, C., Felder, E., Ott, H.R., Bianchi, A.D., Fisk, Z., (2004) Phys. Rev. Lett., 93, p. 147203. , PRLTAO 0031-9007 10.1103/PhysRevLett.93.147203Uimin, G., (1997) Phys. Rev. B, 55, p. 8267. , PRBMDO 0163-1829 10.1103/PhysRevB.55.8267Sturm, H., Elschner, B., Hock, K.-H., (1985) Phys. Rev. Lett., 54, p. 1291. , PRLTAO 0031-9007 10.1103/PhysRevLett.54.1291Al'Tshuler, T.S., Bresler, M.S., (1999) JETP, 88, p. 1019. , JTPHES 1063-7761 10.1134/1.558885Al'Tshuler, T.S., Bresler, M.S., (1999) JETP, 115, p. 1860. , JTPHES 1063-7761Süllow, S., Prasad, I., Aronson, M.C., Bogdanovich, S., Sarrao, J.L., Fisk, Z., (2000) Phys. Rev. B, 62, p. 11626. , PRBMDO. 0163-1829. 10.1103/PhysRevB.62.11626Urbano, R.R., Pagliuso, P.G., Rettori, C., Oseroff, S.B., Sarrao, J.L., Schlottmann, P., Fisk, Z., (2004) Phys. Rev. B, 70, p. 140401. , PRBMDO 0163-1829 10.1103/PhysRevB.70.140401Urbano, R.R., Pagliuso, P.G., Rettori, C., Schlottmann, P., Sarrao, J.L., Bianchi, A., Nakatsuji, S., Oseroff, S.B., (2005) Phys. Rev. B, 71, p. 184422. , PRBMDO 0163-1829 10.1103/PhysRevB.71.184422Feher, G., Kip, A.F., (1955) Phys. Rev., 98, p. 337. , PHRVAO 0031-899X 10.1103/PhysRev.98.337Dyson, F.J., (1955) Phys. Rev., 98, p. 349. , PHRVAO 0031-899X 10.1103/PhysRev.98.349Pake, G.E., Purcell, E.M., (1948) Phys. Rev., 74, p. 1184. , PHRVAO 0031-899X 10.1103/PhysRev.74.1184Giles, C., Yokaichiya, F., Kycia, S.W., Sampaio, L.C., Ardiles-Saravia, D.C., Franco, M.K.K., Neuenschwander, R.T., (2003) J. Synchrotron Radiat., 10, p. 430. , JSYRES 0909-0495 10.1107/S0909049503020958Abragam, A., Bleaney, B., (1970) EPR of Transition Ions, , Clarendon Press, OxfordKunii, S., Uemura, T., Chiba, Y., Kasuya, T., Date, M., (1985) J. Magn. Magn. Mater., 52, p. 271. , JMMMDC 0304-8853 10.1016/0304-8853(85)90277-XKunii, S., (2000) J. Phys. Soc. Jpn., 69, p. 3789. , JUPSAU 0031-9015 10.1143/JPSJ.69.3789Bisch, P.M., Troper, A., Gomes, A.A., (1976) Phys. Rev. B, 13, p. 3902. , PRBMDO 0163-1829 10.1103/PhysRevB.13.3902Troper, A., De Menezes, O.L.T., Lederer, P., Gomes, A.A., (1978) Phys. Rev. B, 18, p. 3709. , PLRBAQ 0556-2805 10.1103/PhysRevB.18.3709Barberis, G.E., Davidov, D., Donoso, J.P., Rettori, C., Suassuna, J.F., Dokter, H.D., (1979) Phys. Rev. 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B, 44, p. 826. , PRBMDO 0163-1829 10.1103/PhysRevB.44.826Kittel, Ch., (1948) Phys. Rev., 73, p. 155. , PHRVAO 0031-899X 10.1103/PhysRev.73.15
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
Weak Ferromagnetism Above Tn In Gd2cuo4
No full textIn this work we report magnetization and Raman measurements performed in single crystals of Gd2CuO4. The data show the presence of two forbidden Raman modes (fRm), B*1g and B*2g, and weak ferromagnetism (WF) in the CuO2 planes up to temperatures well above TN Cu∼280K. We have studied the T-dependence of the intensity of these fRm and the WF component between 2 and 800K. The WF component and the relative intensity of the two fRm decrease with increasing T and they vanish at T∼650 and 520K, respectively. Recent neutron diffraction experiments observed a tetragonal to orthorhombic phase transition at T≅650K. These results are interpreted in terms of structural distortions within the CuO2 planes that lead to the existence of a distribution of coexisting tetragonal and orthorhombic crystallographic domains in this system. © 2001 Elsevier Science B.V. All rights reserved.30514855Tokura, Y., Takagi, H., Uchida, S., (1989) Nature, 337, p. 345Market, T., Maple, M.B., (1989) Solid State Commun., 70, p. 145Butera, A., Tovar, M., Oseroff, S.B., Fisk, Z., (1995) Phys. Rev. B, 52 (13), p. 444Maksimov, A.A., Tartakoskii, I.I., Timofeed, V.B., (1989) Physica C, 160, p. 249Endoh, Y., Matsuda, M., Yamada, K., Kakurai, K., Hidaka, Y., Shirane, G., Birgineau, R.J., (1989) Phys. Rev. B, 40, p. 7123Tovar, M., Obradors, X., Pérez, F., Oseroff, S.B., Duro, R.J., Rivas, J., Chateigner, D., Chenavas, J., (1992) Phys. Rev. B, 45, p. 4729Thompson, J.D., Cheong, S.W., Brown, S.E., Fisk, Z., Oseroff, S.B., Tovar, M., Vier, D.C., Schultz, S., (1989) Phys. Rev. B, 39, p. 6660Braden, M., Paulus, W., Cousson, A., Vigoureux, P., Heger, G., Goukassov, A., Bourges, P., Petitgrand, D., (1994) Europhys. Lett., 25, p. 625Markert, J.T., Early, E.A., Bjornholm, T., Ghamaty, S., Lee, B.W., Neumeier, J.J., Price, R.D., Maple, M.B., (1989) Physica C, 158, p. 178Oseroff, S.B., Rao, D., Wright, F., Vier, D.C., Schultz, S., Thompson, J.D., Fisk, Z., Tovar, M., (1990) Phys. Rev. B, 41, p. 1934Laguna, M.A., Sanjuan, M.L., Butera, A., Tovar, M., Fisk, Z., Canfield, P., (1993) Phys. Rev. B, 48, p. 7565Udagawa, M., Nagaoka, Y., Ogita, N., Masada, M., Akimitsu, J., Ohbayashi, K., (1994) Phys. Rev. B, 49, p. 585Alvarenga, A.D., Rao, D., Sanjurjo, J.A., Granado, E., Torriani, I., Rettori, C., Oseroff, S., Fisk, Z., (1996) Phys. Rev. B, 53, p. 837Pagliuso, P.G., (1998) Physica B, 253, p. 256Vigoureux, P., (1997) Physica C, 273, p. 239Vigoureux, P., (1995), Ph.D. Thesis, University of Paris-SUD, U.F.R. Scientific D'Orsay, France, JuneKubat-Martin, K.A., Fisk, Z., Ryan, R., (1988) Acta Crystallogr., 44 C, p. 1518Steren, L.B., Tovar, M., Oseroff, S.B., (1992) Phys. Rev. B, 46, p. 2874Steren, L.B., Fainstein, A., Tovar, M., Rouco, A., Perez, F., Obradors, X., Mira, J., Fisk, Z., (1993) J. Appl. Phys., 73, p. 5710Rouco, A., Obradors, X., Tovar, M., Pérez, F., (1994) Phys. Rev. B, 50, p. 9924Laguna, M.A., Sanjúan, M.L., Kanehisa, M., (1994) Physica C, 235-240, p. 1193Laguna, M.A., (1996), Ph.D. Thesis, University of Zaragoza, SpainVigoureux, P., Gukasov, A., Barilo, S.N., Zhigunov, D., (1997) Physica B, 234-236, p. 815Anderson, A., (1971) The Raman Effect, 1. , Marcel Dekker, New YorkHayes, W., Loudon, R., (1978) Scattering of Light by Crystals, , Wiley, New YorkAlvarenga, A.D., (1996) Physica B, 223-224, p. 52
Exchange Interaction Effects In The Esr Spectra Of Eu2 + In Lab6
No full textThe electron spin resonance (ESR) spectra of Eu2 +(4 f7, S = frac(7, 2)) in LaB6 single crystal show a single Dysonian resonance for the localized Eu2 + magnetic moments. It is shown that the Eu2 + ions are covalent exchange coupled to the (B) 2p-like host conduction electrons. © 2007 Elsevier B.V. All rights reserved.3982424426(1967) The Chemistry of Boron and its Compounds, , Muetterties E.L. (Ed), Wiley, New YorkLafferty, J.M., (1951) J. Appl. Phys., 22, p. 299Ahmed, H., Broers, A.N., (1972) J. Appl. Phys., 43, p. 2185Vanderberg, J.M., Matthias, B.T., Corenzwit, E., Borz, H., (1975) Mater. Res. Bull., 10, p. 889Urbano, R.R., Pagliuso, P.G., Rettori, C., Oseroff, S.B., Sarrao, J.L., Schlottmann, P., Fisk, Z., (2004) Phys. Rev. B, 70, p. 140401. , (Rapid Communication)Young, D.P., Hall, D., Torelli, M.E., Fisk, Z., Sarrao, J.L., Thompson, J.D., Ott, H.R., Zysler, R., (1999) Nature, 397, p. 412Abragam, A., Bleaney, B., (1970) EPR of Transition Ions, , Clarendon Press, OxfordFeher, G., Kip, A.F., (1955) Phys. Rev., 98, p. 337Dyson, F.J., (1955) Phys. Rev., 98, p. 349Pake, G.E., Purcell, E.M., (1948) Phys. Rev., 74, p. 1184Luft, H., Baberschke, K., Winzer, K., (1982) Z. Phys. B-Condens. Matter, 47, p. 195Rettori, C., Kim, H.M., Chock, E.P., Davidov, D., (1974) Phys. Rev., 10, p. 1826Bisch, P.M., Troper, A., Gomes, A.A., (1976) Phys. Rev. B, 13, p. 3902Troper, A., Lederer O.L.T. d.Menezes, P., Gomes, A.A., (1978) Phys. Rev. B, 18, p. 3709Barberis, G.E., Davidov, D., Donoso, J.P., Rettori, C., Suassuna, J.F., Dokter, H.D., (1979) Phys. Rev. B, 19, p. 5495Pagliuso, P.G., Rettori, C., Sarrao, J.L., Cornelius, A., Hundley, M.F., Fisk, Z., Oseroff, S.B., (1999) Phys. Rev. B, 60, p. 13515Davidov, D., Maki, K., Orbach, R., Rettori, C., Chock, E.P., (1973) Solid State Commun., 12, p. 621Hossain, F.M., Riley, D.P., Murch, G.E., (2005) Phys. Rev. B, 72, p. 23510
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
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