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Jerk Current: A Novel Bulk Photovoltaic Effect.

Benjamin M Fregoso1, Rodrigo A Muniz2,3, J E Sipe3

  • 1Department of Physics, Kent State University, Kent, Ohio 44240, USA.

Physical Review Letters
|November 10, 2018
PubMed
Summary

We discovered a novel photoinduced current, the "jerk current," in biased crystalline insulators. This current grows quadratically with time and exhibits unique perpendicular components, offering new insights into carrier dynamics.

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Area of Science:

  • Solid State Physics
  • Condensed Matter Physics
  • Optoelectronics

Background:

  • Photoinduced currents are crucial in understanding charge transport in materials.
  • Standard hydrodynamic models often simplify carrier behavior under electric fields.

Purpose of the Study:

  • To investigate a third-order polarization susceptibility divergence in biased crystalline insulators.
  • To identify and characterize a novel photoinduced current, termed the

Main Methods:

  • Theoretical analysis of third-order polarization susceptibility.
  • Modeling photoinduced current dynamics in crystalline insulators.

Main Results:

  • Identified a photoinduced current, the

Conclusions:

  • The jerk current presents a physical divergence not accounted for by standard models.
  • This current's unique properties, including perpendicular components, warrant experimental verification.