Thermal radiation as a probe of one-dimensional electron liquids

Wade Degottardi, Michael J. Gullans, Suraj Hegde, Smitha Vishveshwara, Mohammad Hafezi

Research output: Contribution to journalArticlepeer-review


Motivated by recent developments in the field of plasmonics, we develop the theory of radiation from one-dimensional electron liquids, showing that the spectrum of thermal radiation emitted from the system exhibits signatures of non-Fermi liquid behavior. We derive a multipole expansion for the radiation based on the Tomonaga-Luttinger liquid model. While the dipole radiation pattern is determined by the conductivity of the system, we demonstrate that the quadrupole radiation can reveal important features of the quantum liquid, such as the Luttinger parameter. Radiation offers a probe of the interactions of the system, including Mott physics as well as nonlinear Luttinger liquid behavior. We show that these effects can be probed in current experiments on effectively one-dimensional electron liquids, such as carbon nanotubes.

Original languageEnglish (US)
Article number235124
JournalPhysical Review B
Issue number23
StatePublished - Jun 11 2019

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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