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Scientific article
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English

Propagation of shear stress in strongly interacting metallic Fermi liquids enhances transmission of terahertz radiation

Published inScientific Reports, vol. 11, no. 1, 7105
Publication date2021
Abstract

A highlight of Fermi-liquid phenomenology, as explored in neutral 3He, is the observation that in the collisionless regime shear stress propagates as if one is dealing with the transverse phonon of a solid. The existence of this “transverse zero sound” requires that the quasiparticle mass enhancement exceeds a critical value. Could such a propagating shear stress also exist in strongly correlated electron systems? Despite some noticeable differences with the neutral case in the Galilean continuum, we arrive at the verdict that transverse zero sound should be generic for mass enhancement higher than 3. We present an experimental setup that should be exquisitely sensitive in this regard: the transmission of terahertz radiation through a thin slab of heavy-fermion material will be strongly enhanced at low temperature and accompanied by giant oscillations, which reflect the interference between light itself and the “material photon” being the actual manifestation of transverse zero sound in the charged Fermi liquid.

Funding
  • Swiss National Science Foundation - 200020− 179157
  • Swiss National Science Foundation - Early Postdoc Mobility Grant P2GEP2 181450
Citation (ISO format)
VALENTINIS, Davide Filippo, ZAANEN, J., VAN DER MAREL, Dirk. Propagation of shear stress in strongly interacting metallic Fermi liquids enhances transmission of terahertz radiation. In: Scientific Reports, 2021, vol. 11, n° 1, p. 7105. doi: 10.1038/s41598-021-86356-2
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Article (Published version)
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ISSN of the journal2045-2322
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