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“School of Physic”

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Paper   IPM / Physic / 15873
School of Physics
  Title:   Chiral Hall effect in strained Weyl semimetals
  Author(s): 
1 . Sh. Heidari
2 . R. Asgari
  Status:   Preprint
  Journal:
  Year:  2019
  Supported by:  IPM
  Abstract:
In this paper, the chiral Hall effect of strained Weyl semimetals without any external magnetic field is proposed. The electron-phonon coupling emerges in the low-energy fermionic particle through a pseudogauge potential. We show, by using chiral kinetic theory, that the chiral Hall effect emerges as a response of a real time-varying electric field in the presence of the structural distortion and it leads to a spatial chirality and charges separation in the system. We also show that the coupling of the electrons to acoustic phonons as a gapless excitation leads to emerging an optical absorption peak at ω = ωel where ωel is defined as a characteristic frequency associated to the pseudomagnetic field.

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