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Anomalous Hall effect
Rev. Mod. Phys. 82, 1539 – Published 13 May, 2010
DOI: https://doi.org/10.1103/RevModPhys.82.1539
Abstract
The anomalous Hall effect (AHE) occurs in solids with broken time-reversal symmetry, typically in a ferromagnetic phase, as a consequence of spin-orbit coupling. Experimental and theoretical studies of the AHE are reviewed, focusing on recent developments that have provided a more complete framework for understanding this subtle phenomenon and have, in many instances, replaced controversy by clarity. Synergy between experimental and theoretical works, both playing a crucial role, has been at the heart of these advances. On the theoretical front, the adoption of the Berry-phase concepts has established a link between the AHE and the topological nature of the Hall currents. On the experimental front, new experimental studies of the AHE in transition metals, transition-metal oxides, spinels, pyrochlores, and metallic dilute magnetic semiconductors have established systematic trends. These two developments, in concert with first-principles electronic structure calculations, strongly favor the dominance of an intrinsic Berry-phase-related AHE mechanism in metallic ferromagnets with moderate conductivity. The intrinsic AHE can be expressed in terms of the Berry-phase curvatures and it is therefore an intrinsic quantum-mechanical property of a perfect crystal. An extrinsic mechanism, skew scattering from disorder, tends to dominate the AHE in highly conductive ferromagnets. The full modern semiclassical treatment of the AHE is reviewed which incorporates an anomalous contribution to wave-packet group velocity due to momentum-space Berry curvatures and correctly combines the roles of intrinsic and extrinsic (skew-scattering and side-jump) scattering-related mechanisms. In addition, more rigorous quantum-mechanical treatments based on the Kubo and Keldysh formalisms are reviewed, taking into account multiband effects, and demonstrate the equivalence of all three linear response theories in the metallic regime. Building on results from recent experiment and theory, a tentative global view of the AHE is proposed which summarizes the roles played by intrinsic and extrinsic contributions in the disorder strength versus temperature plane. Finally outstanding issues and avenues for future investigation are discussed.
Article Text
References (210)
- Adams, E., and E. Blount, 1959, J. Phys. Chem. Solids 10, 286.
- Allen, P. B., H. Berger, O. Chauvet, L. Forro, T. Jarlborg, A. Junod, B. Revaz, and G. Santi, 1996, Phys. Rev. B 53, 4393.
- Allen, W., E. G. Gwinn, T. C. Kreutz, and A. C. Gossard, 2004, Phys. Rev. B 70, 125320.
- Altshuler, B. L., D. Khmelnitskii, A. Larkin, and P. Lee, 1980, Phys. Rev. B 22, 5142.
- Baily, S. A., and M. B. Salamon, 2003, J. Appl. Phys. 93, 8316.
- Baily, S. A., and M. B. Salamon, 2005, Phys. Rev. B 71, 104407.
- Bastin, A., C. Lewinner, O. Betbeder-Matibet, and P. Nozières, 1971, J. Phys. Chem. Solids 32, 1811.
- Baym, G., and L. P. Kadanoff, 1961, Phys. Rev. 124, 287.
- Berciu, M., and R. N. Bhatt, 2001, Phys. Rev. Lett. 87, 107203.
- Berger, L., 1964, Physica (Amsterdam) 30, 1141.
- Berger, L., 1970, Phys. Rev. B 2, 4559.
- Bergmann, G., and F. Ye, 1991, Phys. Rev. Lett. 67, 735.
- Bernevig, B. A., T. L. Hughes, and S.-C. Zhang, 2006, Science 314, 1757.
- Berry, M. V., 1984, Proc. R. Soc. London 392, 45.
- Binder, K., and A. P. Young, 1986, Rev. Mod. Phys. 58, 801.
- Block, T., M. J. Carey, B. A. Gurney, and O. Jepsen, 2004, Phys. Rev. B 70, 205114.
- Bohm, A., A. Mostafazadeh, H. Koizumi, Q. Niu, and J. Zwanziger, 2003, The Geometric Phase in Quantum Systems (Springer, Berlin).
- Borunda, M., T. Nunner, T. Luck, N. Sinitsyn, C. Timm, J. Wunderlich, T. Jungwirth, A. H. MacDonald, and J. Sinova, 2007, Phys. Rev. Lett. 99, 066604.
- Burkov, A. A., and L. Balents, 2003, Phys. Rev. Lett. 91, 057202.
- Bychkov, Y. A., and E. I. Rashba, 1984, J. Phys. C 17, 6039.
- Campbell, I. A., and S. Senoussi, 1992, Philos. Mag. B 65, 1267.
- Chang, M., and Q. Niu, 1996, Phys. Rev. B 53, 7010.
- Chazalviel, J. N., 1975, Phys. Rev. B 11, 3918.
- Checkelsky, J. G., M. Lee, E. Morosan, R. J. Cava, and N. P. Ong, 2008, Phys. Rev. B 77, 014433.
- Chun, S. H., Y. S. Kim, H. K. Choi, I. T. Jeong, W. O. Lee, K. S. Suh, Y. S. Oh, K. H. Kim, Z. G. Khim, J. C. Woo, and Y. D. Park, 2007, Phys. Rev. Lett. 98, 026601.
- Chun, S. H., M. B. Salamon, Y. Lyanda-Geller, P. M. Goldbart, and P. D. Han, 2000, Phys. Rev. Lett. 84, 757.
- Coleman, P., P. W. Anderson, and T. V. Ramakrishnan, 1985, Phys. Rev. Lett. 55, 414.
- Crépieux, A., and P. Bruno, 2001, Phys. Rev. B 64, 014416.
- Culcer, D., A. H. MacDonald, and Q. Niu, 2003, Phys. Rev. B 68, 045327.
- Dietl, T., H. Ohno, and F. Matsukura, 2001, Phys. Rev. B 63, 195205.
- Dugaev, V., A. Crepieux, and P. Bruno, 2001, Phys. Rev. B 64, 104411.
- Dugaev, V. K., P. Bruno, M. Taillefumier, B. Canals, and C. Lacroix, 2005, Phys. Rev. B 71, 224423.
- Edmonds, K. W., K. Y. Wang, R. P. Campion, A. C. Neumann, C. T. Foxon, B. L. Gallagher, and P. C. Main, 2002, Appl. Phys. Lett. 81, 3010.
- Fabris, F., P. Pureur, J. Schaf, V. Vieira, and I. Campbell, 2006, Phys. Rev. B 74, 214201.
- Fang, Z., N. Nagaosa, K. S. Tahakashi, A. Asamitsu, R. Mathieu, T. Ogasawara, H. Yamada, M. Kawasaki, Y. Tokura, and K. Terakura, 2003, Science 302, 92.
- Feng, J. S.-Y., R. D. Pahsley, and M.-A. Nicolet, 1975, J. Phys. C 8, 1010.
- Fernandez-Pacheco, A., J. M. De Teresa, J. Orna, L. Morellon, P. A. Algarabel, J. A. Pardo, and M. R. Ibarra, 2008, Phys. Rev. B 77, 100403.
- Fert, A., and A. Friederich, 1976, Phys. Rev. B 13, 397.
- Fert, A., A. Friederich, and A. Hamzic, 1981, J. Magn. Magn. Mater. 24, 231.
- Fert, A., and O. Jaoul, 1972, Phys. Rev. Lett. 28, 303.
- Fert, A., and P. M. Levy, 1987, Phys. Rev. B 36, 1907.
- Fivaz, R. C., 1969, Phys. Rev. 183, 586.
- Fukuyama, H., 1980, J. Phys. Soc. Jpn. 49, 644.
- Galanakis, I., P. H. Dederichs, and N. Papanikolaou, 2002, Phys. Rev. B 66, 174429.
- Guo, G. Y., and H. Ebert, 1995, Phys. Rev. B 51, 12633.
- Hadžić-Leroux, M., A. Hamzic, A. Fert, P. Haen, F. Lapierre, and O. Laborde, 1986, Europhys. Lett. 1, 579.
- Haldane, F. D. M., 1988, Phys. Rev. Lett. 61, 2015.
- Haldane, F. D. M., 2004, Phys. Rev. Lett. 93, 206602.
- Hall, E., 1881, Philos. Mag. 12, 157.
- Hall, E. H., 1879, Am. J. Math. 2, 287.
- Haug, H., and A.-P. Jauho, 1996, Quantum Kinetics in Transport and Optics of Semiconductors (Springer, Berlin).
- Hewson, A. C., 1993, The Kondo Problem to Heavy Fermions (Cambridge University Press, Cambridge).
- Hofstadter, D. R., 1976, Phys. Rev. B 14, 2239.
- Holstein, T., 1961, Phys. Rev. 124, 1329.
- Hurd, C. M., 1972, The Hall Effect in Metals and Alloys (Plenum, New York).
- Husmann, A., and L. J. Singh, 2006, Phys. Rev. B 73, 172417.
- Inoue, J., T. Kato, Y. Ishikawa, H. Itoh, G. E. W. Bauer, and L. W. Molenkamp, 2006, Phys. Rev. Lett. 97, 046604.
- Izumi, M., K. Nakazawa, Y. Bando, Y. Yoneda, and H. Terauchi, 1997, J. Phys. Soc. Jpn. 66, 3893.
- Jackiw, R., 1984, Phys. Rev. D 29, 2375.
- Jan, J.-P., 1952, Helv. Phys. Acta 25, 677.
- Jan, J.-P., and J. M. Gijsman, 1952, Physica (Amsterdam) 18, 339.
- Jones, R. O., and O. Gunnarsson, 1989, Rev. Mod. Phys. 61, 689.
- Jungwirth, T., M. Abolfath, J. Sinova, J. Kučera, and A. H. MacDonald, 2002, Appl. Phys. Lett. 81, 4029.
- Jungwirth, T., Q. Niu, and A. H. MacDonald, 2002, Phys. Rev. Lett. 88, 207208.
- Jungwirth, T., J. Sinova, J. Mašek, J. Kučera, and A. H. MacDonald, 2006, Rev. Mod. Phys. 78, 809.
- Jungwirth, T., J. Sinova, K. Y. Wang, K. W. Edmonds, R. P. Campion, B. L. Gallagher, C. T. Foxon, Q. Niu, and A. H. MacDonald, 2003, Appl. Phys. Lett. 83, 320.
- Kadanoff, L. P., and G. Baym, 1962, Quantum Statistical Mechanics (Benjamin, Menlo Park).
- Kane, C. L., and E. J. Mele, 2005, Phys. Rev. Lett. 95, 226801.
- Karplus, R., and J. M. Luttinger, 1954, Phys. Rev. 95, 1154.
- Kato, T., Y. Ishikawa, H. Itoh, and J. Inoue, 2007, New J. Phys. 9, 350.
- Kato, Y. K., R. C. Myers, A. C. Gossard, and D. D. Awschalom, 2004, Science 306, 1910.
- Kats, Y., I. Genish, L. Klein, J. W. Reiner, and M. R. Beasley, 2004, Phys. Rev. B 70, 180407.
- Katsufuji, T., H. Y. Hwang, and S. W. Cheong, 2000, Phys. Rev. Lett. 84, 1998.
- Kawamura, H., 1992, Phys. Rev. Lett. 68, 3785.
- Kawamura, H., 2003, Phys. Rev. Lett. 90, 047202.
- Kawamura, H., 2007, J. Magn. Magn. Mater. 310, 1487.
- Keldysh, L. V., 1964, Pis'ma Zh. Eksp. Teor. Fiz. 47, 1515 [Sov. Phys. JETP 20, 1018 (1965)].
- Kezsmarki, I., S. Onoda, Y. Taguchi, T. Ogasawara, M. Matsubara, S. Iguchi, N. Hanasaki, N. Nagaosa, and Y. Tokura, 2005, Phys. Rev. B 72, 094427.
- Koenig, M., S. Wiedmann, C. Bruene, A. Roth, H. Buhmann, L. W. Molenkamp, X.-L. Qi, and S.-C. Zhang, 2007, Science 318, 766.
- Kohmoto, M., 1985, Ann. Phys. 160, 343.
- Kohn, W., and J. M. Luttinger, 1957, Phys. Rev. 108, 590.
- Kondo, J., 1962, Prog. Theor. Phys. 27, 772.
- Kontani, H., T. Tanaka, and K. Yamada, 2007, Phys. Rev. B 75, 184416.
- Kooi, C., 1954, Phys. Rev. 95, 843.
- Kovalev, A. A., Y. Tserkovnyak, K. Vyborny, and J. Sinova, 2009, Phys. Rev. B 79, 195129.
- Kovalev, A. A., K. Vyborny, and J. Sinova, 2008, Phys. Rev. B 78, 041305.
- Kubo, R., 1957, J. Phys. Soc. Jpn. 12, 570.
- Kundt, A., 1893, Wied. Ann. 49, 257.
- Landau, L. D., E. M. Lifshitz, and L. P. Pitaevskii, 2008, Electrodynamics of Continuous Media, 2nd ed. (Elsevier, Oxford).
- Langenfeld, A., and P. Wolfle, 1991, Phys. Rev. Lett. 67, 739.
- Lapierre, F., P. Haen, R. Briggs, A. Hamzic, A. Fert, and J. P. Kappler, 1987, J. Magn. Magn. Mater. 63-64, 338.
- Lavine, J. M., 1961, Phys. Rev. 123, 1273.
- Lee, M., W. Kang, Y. Onose, Y. Tokura, and N. P. Ong, 2009, Phys. Rev. Lett. 102, 186601.
- Lee, M., Y. Onose, Y. Tokura, and N. Ong, 2007, Phys. Rev. B 75, 172403.
- Lee, P. A., N. Nagaosa, and X. G. Wen, 2006, Rev. Mod. Phys. 78, 17.
- Lee, P. A., and T. V. Ramakrishnan, 1985, Rev. Mod. Phys. 57, 287.
- Lee, W.-L., S. Watauchi, V. L. Miller, R. J. Cava, and N. P. Ong, 2004, Science 303, 1647.
- Leroux-Hugon, P., and A. Ghazali, 1972, J. Phys. C 5, 1072.
- Liu, C.-X., X.-L. Qi, X. Dai, Z. Fang, and S.-C. Zhang, 2008, Phys. Rev. Lett. 101, 146802.
- Luttinger, J. M., 1958, Phys. Rev. 112, 739.
- Luttinger, J. M., and W. Kohn, 1955, Phys. Rev. 97, 869.
- Luttinger, J. M., and W. Kohn, 1958, Phys. Rev. 109, 1892.
- Lyanda-Geller, Y., S. Chun, M. Salamon, P. Goldbart, P. Han, Y. Tomioka, A. Asamitsu, and Y. Tokura, 2001, Phys. Rev. B 63, 184426.
- Lyo, S. K., 1973, Phys. Rev. B 8, 1185.
- MacDonald, A. H., and Q. Niu, 2004, Phys. World 17, 18.
- Machida, Y., S. Nakatsuji, Y. Maeno, T. Tayama, and T. Sakakibara, 2007, J. Magn. Magn. Mater. 310, 1079.
- Machida, Y., S. Nakatsuji, Y. Maeno, T. Tayama, T. Sakakibara, and S. Onoda, 2007, Phys. Rev. Lett. 98, 057203.
- MacKinnon, A., and B. Kramer, 1983, Z. Phys. B: Condens. Matter 53, 1.
- Mahan, G. D., 1990, Many-Particle Physics (Plenum, New York), pp. 671–686.
- Mainkar, N., D. A. Browne, and J. Callaway, 1996, Phys. Rev. B 53, 3692.
- Majumdar, A., and L. Berger, 1973, Phys. Rev. B 7, 4203.
- Manyala, N., Y. Sidis, J. F. Ditusa, G. Aeppli, D. P. Young, and Z. Fisk, 2004, Nature Mater. 3, 255.
- Maranzana, F. E., 1967, Phys. Rev. 160, 421.
- Marder, M. P., 2000, Condensed Matter Physics (Wiley, New York), supplementary material by author.
- Marzari, N., and D. Vanderbilt, 1997, Phys. Rev. B 56, 12847.
- Mathieu, R., A. Asamitsu, K. Takahashi, H. Yamada, M. Kawasaki, Z. Fang, N. Nagaosa, and Y. Tokura, 2004, J. Magn. Magn. Mater. 272, E785.
- Mathieu, R., A. Asamitsu, H. Yamada, K. S. Takahashi, M. Kawasaki, Z. Fang, N. Nagaosa, and Y. Tokura, 2004, Phys. Rev. Lett. 93, 016602.
- Matl, P., N. P. Ong, Y. F. Yan, Y. Q. Li, D. Studebaker, T. Baum, and G. Doubinina, 1998, Phys. Rev. B 57, 10248.
- McAlister, S., 1978, Bull. Am. Phys. Soc. 23, 203.
- McAlister, S., and C. Hurd, 1976, Bull. Am. Phys. Soc. 21, 445.
- Meier, H., M. Y. Kharitonov, and K. B. Efetov, 2009, Phys. Rev. B 80, 045122.
- Misra, R., A. F. Hebard, K. A. Muttalib, and P. Wolfle, 2009, Phys. Rev. B 79, 140408R.
- Mitra, P., R. Mitra, A. F. Hebard, K. A. Muttalib, and P. Wölfle, 2007, Phys. Rev. Lett. 99, 046804.
- Miyasato, T., N. Abe, T. Fujii, A. Asamitsu, S. Onoda, Y. Onose, N. Nagaosa, and Y. Tokura, 2007, Phys. Rev. Lett. 99, 086602.
- Morosan, E., H. W. Zandbergen, L. Li, M. Lee, J. G. Checkelsky, M. Heinrich, T. Siegrist, N. P. Ong, and R. J. Cava, 2007, Phys. Rev. B 75, 104401.
- Moyal, J. E., 1949, Proc. Cambridge Philos. Soc. 45, 99.
- Murakami, S., N. Nagaosa, and S. C. Zhang, 2003, Science 301, 1348.
- Muttalib, K. A., and P. Woelfle, 2007, Phys. Rev. B 76, 214415.
- Nagaosa, N., 2006, J. Phys. Soc. Jpn. 75, 042001.
- Neubauer, A., C. Pfleiderer, B. Binz, A. Rosch, R. Ritz, P. G. Niklowitz, and P. Boni, 2009, Phys. Rev. Lett. 102, 186602.
- Nozieres, P., and C. Lewiner, 1973, J. Phys. (Paris) 34, 901.
- Nunner, T. S., N. A. Sinitsyn, M. F. Borunda, V. K. Dugaev, A. A. Kovalev, A. Abanov, C. Timm, T. Jungwirth, J.-i. Inoue, A. H. MacDonald, and J. Sinova, 2007, Phys. Rev. B 76, 235312.
- Nunner, T. S., G. Zarand, and F. von Oppen, 2008, Phys. Rev. Lett. 100, 236602.
- Oda, K., S. Yoshii, Y. Yasui, M. Ito, T. Ido, Y. Ohno, Y. Kobayashi, and M. Sato, 2001, J. Phys. Soc. Jpn. 70, 2999.
- Ohgushi, K., S. Murakami, and N. Nagaosa, 2000, Phys. Rev. B 62, R6065.
- Ohno, H., H. Munekata, T. Penney, S. von Molmar, and L. L. Chang, 1992, Phys. Rev. Lett. 68, 2664.
- Ong, N. P., and W.-L. Lee, 2006, in Foundations of Quantum Mechanics in the Light of New Technology (Proceedings of ISQM Tokyo 2005), edited by S. Ishioka and K. Fujikawa (World Scientific, Singapore), p. 121.
- Onoda, M., and N. Nagaosa, 2002, J. Phys. Soc. Jpn. 71, 19.
- Onoda, M., and N. Nagaosa, 2003, Phys. Rev. Lett. 90, 206601.
- Onoda, S., 2009, in Proceedings of the Ninth International Symposium on Foundations of Quantum Mechanics in the Light of New Technology (ISQM-Tokyo ’08), edited by S. Ishioka and K. Fujikawa (World Scientific, Singapore), p. 90.
- Onoda, S., and N. Nagaosa, 2003, Phys. Rev. Lett. 90, 196602.
- Onoda, S., N. Sugimoto, and N. Nagaosa, 2006a, Phys. Rev. Lett. 97, 126602.
- Onoda, S., N. Sugimoto, and N. Nagaosa, 2006b, Prog. Theor. Phys. 116, 61.
- Onoda, S., N. Sugimoto, and N. Nagaosa, 2008, Phys. Rev. B 77, 165103.
- Onose, Y., and Y. Tokura, 2006, Phys. Rev. B 73, 174421.
- Parkin, S. S. P., and R. H. Friend, 1980, Philos. Mag. B41, 65.
- Pfleiderer, C., D. Reznik, L. Pintschovius, H. v. Lohneysen, M. Garst, and A. Rosch, 2004, Nature (London) 427, 227.
- Prange, R. E., and S. M. Girvin, 1987, Eds., The Quantum Hall Effect (Springer, Berlin).
- Pu, Y., D. Chiba, F. Matsukura, H. Ohno, and J. Shi, 2008, Phys. Rev. Lett. 101, 117208.
- Pugh, E. M., 1930, Phys. Rev. 36, 1503.
- Pugh, E. M., and T. W. Lippert, 1932, Phys. Rev. 42, 709.
- Pugh, E. M., and N. Rostoker, 1953, Rev. Mod. Phys. 25, 151.
- Pureur, P., F. Fabius, J. Schap, and I. Campbell, 2004, Europhys. Lett. 67, 123.
- Ramaneti, R., J. C. Lodder, and R. Jansen, 2007, Appl. Phys. Lett. 91, 012502.
- Rammer, J., and H. Smith, 1986, Rev. Mod. Phys. 58, 323.
- Rashba, E. I., 2008, Semiconductors 42, 905.
- Ruzmetov, D., J. Scherschligt, D. V. Baxter, T. Wojtowicz, X. Liu, Y. Sasaki, J. K. Furdyna, K. M. Yu, and W. Walukiewicz, 2004, Phys. Rev. B 69, 155207.
- Samoilov, A. V., G. Beach, C. C. Fu, N. C. Yeh, and R. P. Vasquez, 1998, Phys. Rev. B 57, R14032.
- Sangiao, S., L. Morellon, G. Simon, J. M. D. Teresa, J. A. Pardo, J. Arbiol, and M. R. Ibarra, 2009, Phys. Rev. B 79, 014431.
- Schad, R., P. Belien, G. Verbanck, V. V. Moshchalkov, and Y. Bruynseraede, 1998, J. Phys.: Condens. Matter 10, 6643.
- Schliemann, J., and A. H. MacDonald, 2002, Phys. Rev. Lett. 88, 137201.
- Shen, S., X. Liu, Z. Ge, J. K. Furdyna, M. Dobrowolska, and J. Jaroszynski, 2008, J. Appl. Phys. 103, 07D134.
- Shiomi, Y., Y. Onose, and Y. Tokura, 2009, Phys. Rev. B 79, 100404.
- Sinitsyn, N. A., 2008, J. Phys.: Condens. Matter 20, 023201.
- Sinitsyn, N. A., A. H. MacDonald, T. Jungwirth, V. K. Dugaev, and J. Sinova, 2007, Phys. Rev. B 75, 045315.
- Sinitsyn, N. A., Q. Niu, and A. H. MacDonald, 2006, Phys. Rev. B 73, 075318.
- Sinitsyn, N. A., Q. Niu, J. Sinova, and K. Nomura, 2005, Phys. Rev. B 72, 045346.
- Sinova, J., D. Culcer, Q. Niu, N. A. Sinitsyn, T. Jungwirth, and A. H. MacDonald, 2004, Phys. Rev. Lett. 92, 126603.
- Sinova, J., and T. Jungwirth, 2005, in Frontiers in Magnetic Materials, edited by A. V. Narlikar (Springer-Verlag, Berlin), p. 185.
- Sinova, J., T. Jungwirth, and J. Černe, 2004, Int. J. Mod. Phys. B 18, 1083.
- Sinova, J., T. Jungwirth, J. Kucera, and A. H. MacDonald, 2003, Phys. Rev. B 67, 235203.
- Sinova, J., T. Jungwirth, S. Yang, J. Kucera, and A. H. MacDonald, 2002, Phys. Rev. B 66, 041202.
- Smit, J., 1955, Physica (Amsterdam) 21, 877.
- Smit, J., 1958, Physica (Amsterdam) 24, 39.
- Smith, A. W., 1910, Phys. Rev. 30, 1.
- Smith, A. W., and R. W. Sears, 1929, Phys. Rev. 34, 1466.
- Smrcka, L., and P. Streda, 1977, J. Phys. C 10, 2153.
- Sondhi, S. L., A. Karlhede, S. A. Kivelson, and E. H. Rezayi, 1993, Phys. Rev. B 47, 16419.
- Streda, P., 1982, J. Phys. C 15, L717.
- Sugimoto, N., S. Onoda, and N. Nagaosa, 2007, Prog. Theor. Phys. 117, 415.
- Sundaram, G., and Q. Niu, 1999, Phys. Rev. B 59, 14915.
- Taguchi, Y., Y. Oohara, H. Yoshizawa, N. Nagaosa, and Y. Tokura, 2001, Science 291, 2573.
- Taguchi, Y., T. Sasaki, S. Awaji, Y. Iwasa, T. Tayama, T. Sakakibara, S. Iguchi, T. Ito, and Y. Tokura, 2003, Phys. Rev. Lett. 90, 257202.
- Taguchi, Y., et al., 2004, J. Phys.: Condens. Matter 16, S599.
- Taniguchi, T. K., K. Yamanaka, H. Sumioka, T. Yamazaki, Y. Tabata, and S. Kawarazaki, 2004, Phys. Rev. Lett. 93, 246605.
- Tatara, G., and H. Kawamura, 2002, J. Phys. Soc. Jpn. 71, 2613.
- Thouless, D. J., M. Kohmoto, M. P. Nightingale, and M. den Nijs, 1982, Phys. Rev. Lett. 49, 405.
- Tian, Y., L. Ye, and X. Jin, 2009, Phys. Rev. Lett.103, 087206.
- Tokura, Y., and T. Tomioka, 1999, J. Magn. Magn. Mater. 200, 1.
- Ueno, K., T. Fukumura, H. Toyosaki, M. Nakano, and M. Kawasaki, 2007, Appl. Phys. Lett. 90, 072103.
- Ueno, K., T. Fukumura, H. Toyosaki, M. Nakano, T. Yamasaki, Y. Yamada, and M. Kawasaki, 2008, J. Appl. Phys. 103, 07D114.
- Venkateshvaran, D., W. Kaiser, A. Boger, M. Althammer, M. S. R. Rao, S. T. B. Goennenwein, M. Opel, and R. Gross, 2008, Phys. Rev. B 78, 092405.
- Wang, X., D. Vanderbilt, J. R. Yates, and I. Souza, 2007, Phys. Rev. B 76, 195109.
- Wang, X., J. R. Yates, I. Souza, and D. Vanderbilt, 2006, Phys. Rev. B 74, 195118.
- Webster, W. L., 1925, Proc. Cambridge Philos. Soc. 23, 800.
- Wölfle, P., and K. A. Muttalib, 2006, Ann. Phys. 15, 508.
- Wunderlich, J., B. Kaestner, J. Sinova, and T. Jungwirth, 2005, Phys. Rev. Lett. 94, 047204.
- Xiao, D., and Q. Niu, 2009, unpublished.
- Yanagihara, H., and M. B. Salamon, 2002, Phys. Rev. Lett. 89, 187201.
- Yanagihara, H., and M. B. Salamon, 2007, J. Phys.: Condens. Matter 19, 315206.
- Yang, S. R. E., J. Sinova, T. Jungwirth, Y. P. Shim, and A. H. MacDonald, 2003, Phys. Rev. B 67, 045205.
- Yao, Y., L. Kleinman, A. H. MacDonald, J. Sinova, T. Jungwirth, D.-S. Wang, E. Wang, and Q. Niu, 2004, Phys. Rev. Lett. 92, 037204.
- Yao, Y. G., Y. Liang, D. Xiao, Q. Niu, S. Q. Shen, X. Dai, and Z. Fang, 2007, Phys. Rev. B 75, 020401(R).
- Yasui, Y., T. Kageyama, T. Moyoshi, M. Soda, M. Sato, and K. Kakurai, 2006, J. Phys. Soc. Jpn. 75, 084711.
- Yasui, Y., T. Kageyama, T. Moyoshi, M. Soda, M. Sato, and K. Kakurai, 2007, J. Magn. Magn. Mater. 310, E544.
- Ye, J., Y. B. Kim, A. J. Millis, B. I. Shraiman, P. Majumdar, and Z. Tesanović, 1999, Phys. Rev. Lett. 83, 3737.
- Yonezawa, T., and K. Morigaki, 1973, Prog. Theor. Phys. 53, 1.
- Yoshii, S., S. Iikubo, T. Kageyama, K. Oda, Y. Kondo, K. Murata, and M. Sato, 2000, J. Phys. Soc. Jpn. 69, 3777.
- Zeng, C., Y. Yao, Q. Niu, and H. H. Weitering, 2006, Phys. Rev. Lett. 96, 037204.
- Ziman, J. M., 1967, Adv. Phys. 16, 551.