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Originally published in Science Express on 29 January 2009
Science 27 February 2009:
Vol. 323. no. 5918, pp. 1184 - 1187
DOI: 10.1126/science.1167747
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Reports

Inducing a Magnetic Monopole with Topological Surface States

Xiao-Liang Qi,1 Rundong Li,1 Jiadong Zang,2 Shou-Cheng Zhang1*

Existence of the magnetic monopole is compatible with the fundamental laws of nature; however, this elusive particle has yet to be detected experimentally. We show theoretically that an electric charge near a topological surface state induces an image magnetic monopole charge due to the topological magneto-electric effect. The magnetic field generated by the image magnetic monopole may be experimentally measured, and the inverse square law of the field dependence can be determined quantitatively. We propose that this effect can be used to experimentally realize a gas of quantum particles carrying fractional statistics, consisting of the bound states of the electric charge and the image magnetic monopole charge.

1 Department of Physics, Stanford University, Stanford, CA 94305–4045, USA.
2 Department of Physics, Fudan University, Shanghai, 200433, China.

* To whom correspondence should be addressed. E-mail: sczhang{at}stanford.edu

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THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Experimental Realization of a Three-Dimensional Topological Insulator, Bi2Te3.
Y. L. Chen, J. G. Analytis, J.-H. Chu, Z. K. Liu, S.-K. Mo, X. L. Qi, H. J. Zhang, D. H. Lu, X. Dai, Z. Fang, et al. (2009)
Science 325, 178-181
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