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Direct Detection of Light Dark Matter with Magnons

Trickle, Tanner and Zhang, Zhengkang and Zurek, Kathryn M. (2019) Direct Detection of Light Dark Matter with Magnons. . (Unpublished)

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Scattering of light dark matter with sub-eV energy deposition can be detected with collective excitations in condensed matter systems. When dark matter has spin-independent couplings to atoms or ions, it has been shown to efficiently excite phonons. Here we show that, if dark matter couples to the electron spin, magnon excitations in materials with magnetic dipole order offer a promising detection path. We derive general formulae for single magnon excitation rates from dark matter scattering, and demonstrate as a proof of principle the projected reach of a yttrium iron garnet target for several dark matter models with spin-dependent interactions. This highlights the complementarity of various collective excitations in probing different dark matter interactions.

Item Type:Report or Paper (Discussion Paper)
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Additional Information:We thank Sinéad Griffin, David Hsieh, Matt Pyle and Mengxing Ye for useful discussions, and Sinéad Griffin, Katherine Inzani and Thomas Harrelson for collaboration on future work. T.T., Z.Z. and K.Z. are supported by the DoE under contract DE-AC02-05CH11231. T.T. and K.Z. are also supported by the Quantum Information Science Enabled Discovery (QuantISED) for High Energy Physics (KA2401032). Z.Z. is also supported by the NSF grant PHY-1638509. We thank the CERN theory group for hospitality where part of this work was completed. Z.Z. and K.Z. also thank the Aspen Center for Physics for hospitality during the completion of this work.
Funding AgencyGrant Number
Department of Energy (DOE)DE-AC02-05CH11231
Quantum Information Science Enabled Discovery for High Energy PhysicsKA2401032
Record Number:CaltechAUTHORS:20190612-124923230
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:96325
Deposited By: Tony Diaz
Deposited On:12 Jun 2019 19:58
Last Modified:03 Oct 2019 21:21

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