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28 March 2024
 
  » arxiv » cond-mat/0310232

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Anomalous Hall Effect and Magnetic Monopoles in Momentum-Space
Z. Fang ; N. Nagaosa ; K. S. Takahashi ; A. Asamitsu ; R. Mathieu ; T. Ogasawara ; H. Yamada ; M. Kawasaki ; Y. Tokura ; K. Terakura ;
Date 10 Oct 2003
Journal Science 302N5642 (2003) 92-95 DOI: 10.1126/science.1089408
Subject Strongly Correlated Electrons; Materials Science | cond-mat.str-el cond-mat.mtrl-sci
AbstractEfforts to find the magnetic monopole in real space have been made in cosmic rays and in accelerators, but up to now there is no firm evidence for its existence due to the very heavy mass $sim 10^{16}$GeV. However, we show that the magnetic monopole can appear in the crystal-momentum space of solids in the accessible low energy region ($sim0.1-1$eV) in the context of the anomalous Hall effect. We report experimental results together with first-principles calculations on the ferromagnetic crystal SrRuO$_3$ that provide evidence for the magnetic monopole in the crystal-momentum space.
Source arXiv, cond-mat/0310232
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