Hydrodynamic theory of thermoelectric transport and negative magnetoresistance in Weyl semimetals Journal Article uri icon



  • Significance; Weyl semimetals are exotic materials with negative electrical magnetoresistance: when an electric and magnetic field are applied in parallel, the induced electrical current increases upon increasing magnetic field strength. This is due to an emergent axial quantum anomaly in Weyl semimetals. We present a universal description of thermoelectric transport in weakly disordered Weyl semimetals where electron–electron interactions are faster than electron–impurity scattering. We predict negative thermal magnetoresistance: upon applying a parallel temperature gradient and magnetic field, the induced heat current increases with increasing magnetic field strength. This is caused by a distinct emergent quantum anomaly—the axial–gravitational anomaly. Measuring this effect may be the most practical route to experimentally observing this anomaly in any branch of physics.

publication date

  • August 23, 2016

has restriction

  • bronze

Date in CU Experts

  • July 23, 2019 1:11 AM

Full Author List

  • Lucas A; Davison RA; Sachdev S

author count

  • 3

Other Profiles

International Standard Serial Number (ISSN)

  • 0027-8424

Electronic International Standard Serial Number (EISSN)

  • 1091-6490

Additional Document Info

start page

  • 9463

end page

  • 9468


  • 113


  • 34