Dirac Strings and Magnetic Monopoles in the Spin Ice Dy2Ti2O7

  title={Dirac Strings and Magnetic Monopoles in the Spin Ice Dy2Ti2O7},
  author={David Morris and David Alan Tennant and Santiago Andr{\'e}s Grigera and Bastian Klemke and Claudio Castelnovo and Roderich Moessner and Clemens Czternasty and Markus V. Meissner and Kirrily C. Rule and J. Hoffmann and Klaus Kiefer and Sebastian Gerischer and Demian G. Slobinsky and Robin S. Perry},
  pages={411 - 414}
Magnetic Monopoles Magnets come with a north and a south pole. Despite being predicted to exist, searches in astronomy and in high-energy particle physics experiments for magnetic monopoles (either north or south on their own) have defied observation. Theoretical work in condensed-matter systems has predicted that spin-ice structures may harbor such elusive particles (see the Perspective by Gingras). Fennell et al. (p. 415, published online 3 September) and Morris et al. (p. 411, published… Expand
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  • Physics, Computer Science
  • Symmetry
  • 2019
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This work proposes that magnetic monopoles emerge in a class of exotic magnets known collectively as spin ice: the dipole moment of the underlying electronic degrees of freedom fractionalises into monopoles, which would account for a mysterious phase transition observed experimentally in spin ice in a magnetic field. Expand
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Magnetic monopoles have eluded experimental detection since their prediction nearly a century ago by Dirac. Recently it has been shown that classical analogues of these enigmatic particles occur asExpand
Neutron scattering studies of the spin ices Ho2Ti2O7 and Dy2Ti2O7 in applied magnetic field
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A cooperative spin-freezing transition leading to the spin-ice ground state in Dy2Ti2O7, a site-ordered magnetic material in which the spins reside on a lattice of corner-sharing tetrahedra where they form an unusual magnetic ground state known as ‘spin ice’ is identified. Expand
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Spin correlations in Ho2Ti2O7: a dipolar spin ice system.
The pyrochlore material Ho2Ti2O7 has been suggested to show "spin ice" behavior. We present neutron scattering and specific heat results that establish unambiguously that Ho2Ti2O7 exhibits spin iceExpand